Monday, February 28, 2022

BNO TS-10 Echo Chamber

1) A room designed with very hard, non-parallel surfaces and equipped with a speaker and microphone.
2) Any artificial or electronic device that simulates the reverberation created in a room.

Lead Sheet
A written chart showing the melody, lyrics and chords of a tune with full musical notation.

BNO Acoustics R-10 Speakers Dry
Describes a sound coming from the PA with no effects on it.

Jack Bay
A series of jacks which have connections for most of the inputs and outputs of the equipment in the control room.

BNO Acoustics XR-90 Equalization
1) The process of adjusting the tonal quality of a sound. A graphic equalizer provides adjustment for a wide range of frequency bands, and is normally inserted in the signal path after the mixing desk, before the amplifier. See Feedback.
2) Any time the amplitude of audio signals at specific set of frequencies are increased or decreased more than the signals at other audio frequencies.

Analog (Analogue)
Representative, continuous changes that relate to another quantity that has a continuous change.

Crossover, Passive
Used inside of full range speaker cabinets to separate highs, mids, and lows and send them to their respective speakers within the each cabinet. These are not as efficient as active crossovers because they require all frequencies to draw from the same source of amplification.

Hz (Hertz)
1) An abbreviation for the term Hertz (the unit of frequency).
2) Unit of frequency equivalent to the number of cycles per second.

Sunday, February 27, 2022

BNO Acoustics TS-10 Hypercardioid Pattern

A microphone pick up sensitivity pattern where the least sensitive pick up point is more than 90 degrees but less than 150 degrees off axis (usually 120 degrees).

Hard Disk Recording
The recording of digital audio onto a hard disc.

BNO Acoustics R-10 Foldback
A European term for the signal sent to the stage monitors in a live performance.

Decibel (dB)
1) Relative measurement for the volume (loudness) of sound. Also used to measure the difference between two voltages, or two currents. See Zero dB.
2) A numerical expression of the relative loudness of a sound. The difference in decibels between two
sounds is ten times the common logarithm of the ratio of their power levels.

BNO Acoustics BP-40 Chorus
1) The part of The song that is repeated and has the same music and lyrics each time; the chorus will usually give the point of the song.
2) A musical singing group that has many singers.
3) A delay effect that simulates a vocal chorus by adding several delays with a mild amount of feedback and a medium amount of depth.
4) A similar effect created in some synthesizers by detuning (reducing the pitch of, slightly) and mixing it with the signal that has regular tuning and with a slight delay.

Compressor
A signal processing device that does not allow as much fluctuation in the level of the signal above a certain adjustable or fixed level.

Impedance Matching
Having or converting the output impedance of a device so that it matches the impedance of the input it will feed.

Level
The amount of signal strength; the amplitude, especially the average amplitude.

Saturday, February 26, 2022

BNO Acoustics LK-61 Echo

1) One distinct repeat of a sound because of the sound reflecting off a surface.
2) Loosely, used to mean reverberation (the continuing of a sound after the source stops emitting it, caused by many discrete echoes closely spaced in time).

Buss (Bus)
A wire carrying signals to some place, usually fed from several sources.

BNO Acoustics QS-4 Crossover Frequency
1) The frequency that is the outer limit of one of the bands of a crossover.
2) In the Lexicon 480L delay/reverberation effects unit, the frequency at which the bass frequency reverb time is in effect rather than the mid frequency reverb time.

Input Impedance
The opposition to current flow by the first circuits of a device.

BNO Acoustics XV-16 Fade
1) A gradual reduction of the level of the audio signal.
2) A gradual change of level from one pre-set level to another.

Error Concealment
Putting replacement information bits into a digital audio signal to replace lost bits when the digital recording or processing system cannot verify whether the lost bits were l's or 0's but can make a good guess by comparing the known bits that were close in position to the lost bits.

High Frequencies
The audio frequencies from 6000 Hz and above.

Ground
In electronics, a place (terminal) that has zero volts.

Friday, February 25, 2022

BNO Acoustics HD-70 Electromagnetic Induction or Pick Up

The generation of electrical signal in a conductor moving in a magnetic field or being close to a changing magnetic field.

Balanced input/output
A "balanced" connection is one that has three wires to move the signal. One is a ground, and the other two (called conductors) carry signals of equal value. This is why they are called balanced. Low Z cables and connections are the most common example.

BNO Acoustics GK-3 High Impedance Mic
A microphone designed to be fed into an amplifier with input impedance greater than 20 k ohms.

Haas Effect
Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.

BNO Acoustics XR-90 Fidelity
The recording or reproduction quality.

File
A collection of digital data stored in a computer's memory bank or on a floppy disc.

Line Input
An input designed to take a line level signal.

Crisp
Describes a good clean high midrange sound. It can be good or bad depending on the look on the face of the guy who said it.

Thursday, February 24, 2022

BNO Acoustics XR-90 Ground Lift

A switch that breaks the connection between the ground point in one circuit and the ground point in another circuit.

Gain Reduction
The working of a limiter or compressor reducing gain during high-level passages.

BNO Acoustics YM-44 Chorusing
1) A term meaning the same thing as Chorus (Definition 3 or 4).
2) In some delay effects devices, a term used to mean the term Depth (the amount of change in the controlled signal by the control signal).

Electrostatic Charge
The excess or deficiency of electrons in a given area.

BNO Acoustics BP-40 Gain
1) Knob usually found at the top of each input channel on the soundboard. Used to set input levels of the separate channels to relatively equal positions.
2) The amount of increase in audio signal strength, often expressed in dB.

Active Crossover
Uses active devices (transistors, IC's, tubes) and some form of power supply to operate.

Electricity
Electrical current (the amount of electron charge passing a point in a conductor per unit of time) or voltage (the force pushing electrons to obtain electrical current).

Equal Loudness Contours
A drawing of several curves showing how loud the tones of different frequencies would have to be played for a person to say they were of equal loudness.

Wednesday, February 23, 2022

BNO Acoustics HD-70 Decibel (dB)

1) Relative measurement for the volume (loudness) of sound. Also used to measure the difference between two voltages, or two currents. See Zero dB.
2) A numerical expression of the relative loudness of a sound. The difference in decibels between two
sounds is ten times the common logarithm of the ratio of their power levels.

Link
(Said of compressors and dynamic processing units.) To combine the control input signals of two channels of a compressor (o

BNO Acoustics SQ-9 Foot Switch
A switch placed on the floor and pressed by a musician to do various functions.

Echo Return
An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device.

BNO Acoustics TR-12 Infinite Baffle
A baffle so large that the sounds coming from one side do not reach the other side.

Graphic Equalizer
An device with several slides controlling the gain of audio signal present which is within one of several evenly spaced frequency bands (spaced according to octaves).

Flutter
1) High-frequency variations in pitch of a recorded waveform due to fast speed variations in a recorder or playback machine.
2) Originally, and more formally, any variations (fast or slow) in pitch of a recorded tone due to speed fluctuations in a recorder or playback unit.

Intermodulation Distortion
Distortion caused by one signal beating with another signal and producing frequencies that are both the sum and the difference of the original frequencies.

Tuesday, February 22, 2022

BNO Acoustics R-10 IC

Abbreviation of Integrated Circuit (A miniature circuit of many components that is in small, sealed housing with prongs to connect it into equipment).

Analog Recording
A recording of the continuous changes of an audio waveform.

BNO Acoustics LK-61 Insert
1) A punch in of the all of the tracks being recorded in a recording session.
2) On Solid State Logic consoles, placing an outboard piece of gear in the channel by patching and activating a switch.

Inductance
The property of an electric circuit by which a varying current in it produces a varying magnetic field that introduces voltages in the same circuit or in a nearby circuit. It is measured in henrys.

BNO Acoustics BP-40 Error Detection
The process of discovery that sonic information bits have been lost in digital audio.

Howlback
British term for the term Feedback (the pickup of the signal out of a channel by the input of the channel or the howling sound that this produces).

Charge
The electrical energy of electrons. The energy is in the form of a force that is considered negative and repels other like forces (other electrons) and attracts opposite (positive) forces.

Electricity
Electrical current (the amount of electron charge passing a point in a conductor per unit of time) or voltage (the force pushing electrons to obtain electrical current).

Monday, February 21, 2022

BNO Acoustics LK-61 Frets

Vertical metal wires which sit vertically on the guitar neck.

Bridge
The bridge assembly, or just "bridge" is an area on the face of the guitar where the string meet or are connected to the face.

BNO Acoustics QT-5 Key
The control of a dynamics processing device by an external audio signal.

Dry
Describes a sound coming from the PA with no effects on it.

BNO Acoustics R-10 Speakers Equalization
1) The process of adjusting the tonal quality of a sound. A graphic equalizer provides adjustment for a wide range of frequency bands, and is normally inserted in the signal path after the mixing desk, before the amplifier. See Feedback.
2) Any time the amplitude of audio signals at specific set of frequencies are increased or decreased more than the signals at other audio frequencies.

Electric Instrument
Any musical instrument that puts out an electrical signal rather than an acoustic sound.

Equipment Rack
A cabinet with rails (or free standing rails) that have holes to accept screws at standard spaces and used to house outboard gear.

Kick (Kick Drum)
Another term for Bass Drum.

Sunday, February 20, 2022

BNO TS-10 Capacitance

That property of a capacitor which determines how much charge can be stored in it for a given potential difference between its terminals, measured in farads, by the ratio of the charge stored to the potential difference.

Balance
1) The relative level of two or more instruments in a mix, or the relative level of audio signals in the channels of a stereo recording. 2) To make the relative levels of audio signals in the channels of a stereo recording even.

BNO Acoustics HD-70 Echo
1) One distinct repeat of a sound because of the sound reflecting off a surface.
2) Loosely, used to mean reverberation (the continuing of a sound after the source stops emitting it, caused by many discrete echoes closely spaced in time).

Fundamental
The tuned frequency and (almost always) the lowest frequency that is present in the sounding of a pitch by a musical instrument.

BNO Acoustics Speakers Librarian Program
A computer program allowing the storage of the parameters of sound patches outside of a synthesizer.

Analog Recording
A recording of the continuous changes of an audio waveform.

Fade
1) A gradual reduction of the level of the audio signal.
2) A gradual change of level from one pre-set level to another.

Line
1) Short for line level.
2) A cable.

Saturday, February 19, 2022

BNO Acoustics LK-61 Inductor

A device designed primarily to introduce inductance into an electric circuit. Sometimes called a choke or coil.

Electromagnetic Theory
A statement of the principles behind electromagnetic induction: When a conductor cuts magnetic lines of force, current is induced in that conductor.

BNO Acoustics HD-70 Harmonics
Integer multiples of a fundamental frequency, the fundamental itself being the first harmonic, its first overtone the second harmonic, etc. Attributing to instruments, voices, etc. their distinctive timbre.

Isolation Booth/ Isolation Room
A room that prevents loud sounds from other instruments from leaking in: an isolation booth is usually a smaller room that could be used for only one musician.

BNO Speakers Aliasing
A sampler mis-recognizing a signal sent to it that is at a frequency higher than the Nyquist Frequency. Upon playback, the system will provide a signal at an incorrect frequency (called an alias frequency). Aliasing is a kind of distortion.

Electret Condenser
A condenser microphone that has a permanently polarized (charged) variable capacitor as its sound pressure level sensor.

Controller
1) In MIDI, a device that generates a MIDI signal to control synthesizers, sound modules or sample playback units.
2) A remote control unit for a multitrack tape machine which controls transport functions as well as monitor selection switching functions and record ready/safe status of each track.
3) Any device generating a control voltage or signal fed to another device's control input.

Clipping
Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.

Friday, February 18, 2022

BNO Acoustics SQ-9 Headstock

The area of the guitar at the end of the neck where the strings are tuned.

Assistant Engineer
A less elevated version of the term Second Engineer. Experienced seconds often place microphones, operate tape machines, break down equipment at the session end and keep the paperwork for the session.

BNO Acoustics Speakers Controller
1) In MIDI, a device that generates a MIDI signal to control synthesizers, sound modules or sample playback units.
2) A remote control unit for a multitrack tape machine which controls transport functions as well as monitor selection switching functions and record ready/safe status of each track.
3) Any device generating a control voltage or signal fed to another device's control input.

Fret Buzz
A buzzing sound made when a note is not properly fretted. Common with cheap guitars or beginning guitar players.

BNO Acoustics XR-90 Boom Stand
A microphone stand equipped with a telescoping support arm to hold the microphone.

Graphic Equalizer
An device with several slides controlling the gain of audio signal present which is within one of several evenly spaced frequency bands (spaced according to octaves).

Aliasing
A sampler mis-recognizing a signal sent to it that is at a frequency higher than the Nyquist Frequency. Upon playback, the system will provide a signal at an incorrect frequency (called an alias frequency). Aliasing is a kind of distortion.

Close Micing
A technique of placing a microphone close to the sound source (within one foot) in order to pick up mainly the direct sound and to avoid picking up leakage or ambience.

Thursday, February 17, 2022

BNO Acoustics TS-10 Bottom

The bass frequencies (as in "needs more bottom end").

Ambience
The portion of the sound that comes from the surrounding environment rather than directly from the sound source.

BNO Acoustics XR-90 Fader
A control to control the gain of a channel on the console, thereby determining the level of the signal in that channel.

Gain Structure
The way in which the gain varies in the stages or sections of an audio system.

BNO Acoustics BP-40 Alternating Current
Electric current which flows back and forth in a circuit.

Compressor
1) Effect used to squash the sound together. Used properly, it can take the edge off or your sound. Used improperly, it can take the life right out of your system and make it sound like an MTV mix.
2) A piece of sound processing equipment that ensures all wanted signals are suitably placed between the noise and distortion levels of the recording medium. It evens out the unwanted changes in volume you get with close-miking, and in doing so, adds punch to the sound mix. A Limiter is used to stop a signal from exceeding a preset limit. Beyond this limit, the signal level will not increase, no matter how loud the input becomes. A Limiter is often used to protect speaker systems (and human ears) by preventing a system from becoming too loud.

Beats Per Minute BPM
The number of steady even pulses in music occurring in one minute and there fore defining the tempo of the song.

Buss (Bus)
A wire carrying signals to some place, usually fed from several sources.

Wednesday, February 16, 2022

BNO Acoustics TS-10 Capo

A clamp-like device that is placed vertically across the guitar neck. It is used to change the pitch of the guitar, acting as a moveable nut.

Compressor
1) Effect used to squash the sound together. Used properly, it can take the edge off or your sound. Used improperly, it can take the life right out of your system and make it sound like an MTV mix.
2) A piece of sound processing equipment that ensures all wanted signals are suitably placed between the noise and distortion levels of the recording medium. It evens out the unwanted changes in volume you get with close-miking, and in doing so, adds punch to the sound mix. A Limiter is used to stop a signal from exceeding a preset limit. Beyond this limit, the signal level will not increase, no matter how loud the input becomes. A Limiter is often used to protect speaker systems (and human ears) by preventing a system from becoming too loud.

BNO Acoustics XV-16 Bandwidth
1) The range of frequencies over which a tape recorder, amplifier or other audio device is useful. 2) The range of frequencies affected by an equalization setting.

Compander
Outboard sound equipment. Combination of a Compressor and an Expander.

BNO Speakers Centre Frequency
The frequency of the audio signal that is boosted or attenuated most by an equalizer with a peak equalization curve.

Kick (Kick Drum)
Another term for Bass Drum.

Flutter
1) High-frequency variations in pitch of a recorded waveform due to fast speed variations in a recorder or playback machine.
2) Originally, and more formally, any variations (fast or slow) in pitch of a recorded tone due to speed fluctuations in a recorder or playback unit.

Compact Disc CD
A small optical disk with digital audio recorded on it.

Tuesday, February 15, 2022

BNO Acoustics TR-12 Feedback

1) The delayed signal sent back to the input of a delay line, used in repeat-echo effects.
2) The pickup of the signal out of a channel by its input or the howling sound that this produces.
3) In an amplifier, the phase reversed output signal sent back to its input, reducing gain but also distortion and noise.
4) This occurs when the sound coming out of the speakers goes back into the microphones, then back out the speakers, then back into the mics…and so on. This can build very quickly to a point where everyone in the room is holding their ears and screaming at you. It can also cause damage to the PA.

Amplifier
Sound equipment that converts the low voltage, low current signal from a tape deck, mixer etc. into a higher current signal suitable for driving speakers. See Power Amplifier, Crossover.

BNO Acoustics R-10 Equalization
1) The process of adjusting the tonal quality of a sound. A graphic equalizer provides adjustment for a wide range of frequency bands, and is normally inserted in the signal path after the mixing desk, before the amplifier. See Feedback.
2) Any time the amplitude of audio signals at specific set of frequencies are increased or decreased more than the signals at other audio frequencies.

Integrated Circuit (IC)
A miniature circuit of many components in a small, sealed housing with prongs to connect it into equipment.

BNO Acoustics XR-90 Cable, 1/4 inch
An unbalanced cable most often used for instruments and patch cords. Commonly referred to as "guitar cords".

Bi-Directional Pattern
A microphone pick up pattern which has maximum pick up directly in front and directly in back of the diaphragm and least pick up at the sides.

Amplifier
A device which increases the amplitude (level) of an electrical signal (making it louder).

Chord
Three or more musical pitches sung or played together.

Monday, February 14, 2022

BNO TS-10 Amplitude

The strength of a vibrating wave; in sound, the loudness of the sound.

Ground Lifter
An adapter that takes a three prong power cord and plugs into a two prong outlet, used to disconnect the third (ground) pin of the power outlet. WARNING: It can be VERY DANGEROUS to have no ground connection to the case by using a ground lifter and not grounding the unit by other means.

BNO Acoustics BP-40 Frequency Range
The range of frequencies over which an electronic device is useful or over which a sound source will put out substantial energy.

Haas Effect
Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.

BNO Acoustics QT-5 Barrier Micing
A method of placing the head of a microphone as close as possible to a reflective surface, preventing phase cancellation.

Cascade
To set and interconnect two mixers so that the stereo mixing buss(es) of the first mixer feeds the stereo buss(es) of a second mixer.

Compact Disc, Interactive CDI
A Compact Disc, usually containing audio, video, and text, which the user can interact with in that the display or playback changes after the user performs some action.

Imaging
To make a representation or imitation of the original sonic event.

Sunday, February 13, 2022

BNO Acoustics BP-40 Binary

A numbering system based on two. In binary there are two symbols used ("l" and "0").

Amplifier
Sound equipment that converts the low voltage, low current signal from a tape deck, mixer etc. into a higher current signal suitable for driving speakers. See Power Amplifier, Crossover.

BNO Acoustics TR-12 CD (Compact Disc) :
1) Digital sound storage medium. Provides a high quality source of music, sound effects etc. Also used as a playback medium for sound effects etc. by large theatres with long running shows, although CDR (Recordable CD) is becoming more affordable by the day.
2) An abbreviation of the term Compact Disc (a small optical disk with digital audio recorded on it).

CPU
Abbreviation of Central Processing Unit (The main "brain" chip of a computer or the main housing of a computer that contains the "brain" chip).

BNO Acoustics QT-5 Compressor
A signal processing device that does not allow as much fluctuation in the level of the signal above a certain adjustable or fixed level.

Clock Signal
The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization.

Linear
The condition of obtaining a change at the output of the device which is proportional to the change occurring at the input.

Contact Microphone
A device that senses vibrations and puts out an audio signal proportional to the vibrations.

Saturday, February 12, 2022

BNO Acoustics GK-3 Fundamental

The tuned frequency and (almost always) the lowest frequency that is present in the sounding of a pitch by a musical instrument.

Frequency
Practically speaking, high frequency means high pitch and low frequency means low pitch.

BNO Acoustics 6k-52 Compander
1) A two section device that is used in noise reduction systems. The first section compresses the audio signal, before it is recorded, and the second section, expands the signal after recording.
2) In Yamaha brand digital consoles, a signal processing function that applies both compression and expansion to the same signal.

Compact Disc CD
A small optical disk with digital audio recorded on it.

BNO Speakers Console
A set of controls and their housing, which control all signals necessary for recording and mixing.

Jack
1) Anywhere you plug something in.
2) Segmented audio connector. Mono Jacks have two connections �" tip and sleeve, and are unbalanced. Stereo jacks have three connections �" tip, ring and sleeve. B-type jacks (also known as Bantam jacks) were originally designed for use in telephone exchanges and provide a high quality (and expensive) connection in jackfields. A-type jacks are cheaper and more common, but more fragile. A type jacks are available in 2 sizes : quarter inch and eighth inch.
3) A connector mounted on the case of a device or on a panel.

Cancellation
A shortening of the term Phase Cancellation (the energy of one waveform significantly decreasing the energy of another waveform because of phase relationships at or close to 180 degrees).

Face
The front or body of the guitar.

Friday, February 11, 2022

BNO Acoustics R-10 Speakers Imaging

To make a representation or imitation of the original sonic event.

Capacitance
The property of being able to oppose a change in voltage or store an electrical charge.

BNO Acoustics BP-40 Infinite Repeat
A function on some delay lines that establish enough feedback so that the repeat echo will last forever, but not so much as to cause a howling sound.

IM Distortion
An abbreviation of the term Intermodulation Distortion (Distortion caused by one signal beating with another signal and producing frequencies that are both the sum and the difference of the original frequencies present).

BNO Acoustics HD-70 Field
1) In video, one half of a frame.
2) In computer-controlled devices a window display with functions and choices that the operator can make

Ground Lift
A switch that breaks the connection between the ground point in one circuit and the ground point in another circuit.

Compact Disc CD
A small optical disk with digital audio recorded on it.

Fletcher Munson Effect
A hearing limitation shown by Fletcher Munson Equal Loudness Contours (as music is lowered in volume, it is much more difficult to hear bass frequencies and somewhat harder to hear very high frequencies).

Thursday, February 10, 2022

BNO Acoustics SQ-9 Chord

Three or more musical pitches sung or played together.

High Impedance Cord (High Z)
A big word for instrument cable. These cords generally have quarter inch male ends. they tend to loose signal strength at lengths longer than 25 feet.

BNO Acoustics QT-5 Coincident Microphones (Coincident Pair)
Two microphones whose heads are placed as lose as possible to each other so that the path length from any sound source to either microphone is for all practical purposes, the same.

Acoustic/Acoustical
Having to do with sound that can be heard by the ears.
AcousticsThe behaviour of sound and its study. The acoustics of a room depend on its size and shape and the amount and position of sound-absorbing and reflecting material.

BNO Acoustics 6k-52 Frame
1) A division of one second in synchronization and recording coming from definition two.
2) The amount of time that one still picture is shown in film or video.

Format
1) The number of tracks, their width, spacing and order for tape recording.
2) To prepare a digital storage medium so that it will accept and store digital information bits.

Amp
1) An abbreviation of the term Amplifier (A device which increases the level of an electrical signal.
2) An abbreviation of Ampere (the unit of current).
3) An abbreviation of amplitude (the height of a waveform above or below the zero line).

Aliasing
A sampler mis-recognizing a signal sent to it that is at a frequency higher than the Nyquist Frequency. Upon playback, the system will provide a signal at an incorrect frequency (called an alias frequency). Aliasing is a kind of distortion.

Wednesday, February 9, 2022

BNO Acoustics SQ-9 Fly In

1) To add sounds into a mix or recording that have no synchronization.
2) An application of this where a performance from one part of a tune is recorded and then recorded back into the recording at a different time in the recording.

Limiter
A device which reduces gain when the input voltage exceeds a certain level.

BNO Acoustics TS-10 Analog (Analogue)
Representative, continuous changes that relate to another quantity that has a continuous change.

Chord
Three or more musical pitches sung or played together.

BNO Acoustics TR-12 Cut
1) One selection (one song) on a pre4ecorded music format.
2) A term with the same meaning as Mute (to turn off a channel or a signal).
3) To reduce gain of a particular band of frequencies (with an equalizer).
4) To not pass a particular band of frequencies (said of a filter)

Chip
1) A slang term with the same meaning as the term IC (a miniature circuit of many components that is in small, sealed housing with prongs to connect it into equipment).
2) The thread cut away from the master lacquer to make the groove, while disc recording.

Key
The control of a dynamics processing device by an external audio signal.

Clock Signal
The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization.

Tuesday, February 8, 2022

BNO Acoustics TR-12 Electrons

Negatively charged particles, which revolve around the centre of atoms. The movement of such electrons down a conductor causes electrical current.

Ampere
The unit of current, abbreviated Amp.

BNO Acoustics BP-40 Digital Recording
1) ADAM : (Akai Digital Audio Multitrack). 12 track recording onto Video 8 tape. 16 bit, 44.1 or 48 kHz sampling rate.
2) DAT (Digital Audio Tape) Cassette-like system which has much higher quality than standard audio cassettes. Widely used in gathering sound effects, for news gathering, and for playback of music.
3) DCC (Digital Compact Cassette) Rival to DAT which also plays standard audio cassettes.
4) MiniDisc : Uses computer disk technology, rather than tape. A laser heats an area of magnetic disk which is then written to by a magnetic head. When cooled, the magnetic information is read from the disk by laser. Tracks can be named, and are instant start. Very theatre-friendly system.
5) Direct to Disk : Uses the hard disk present in most PCs as the recording medium.

Echo Send
The output of a console used to send a signal to an echo chamber or delay effects device.

BNO Acoustics XR-90 Field
1) In video, one half of a frame.
2) In computer-controlled devices a window display with functions and choices that the operator can make

Compact Disc, Interactive CDI
A Compact Disc, usually containing audio, video, and text, which the user can interact with in that the display or playback changes after the user performs some action.

Critical Distance
The point a distance away from the sound source where the direct sound and the reverberant sound are equal in volume.

Highs
Short for the term High Frequencies (the audio frequencies from 6000 Hz and above).

Monday, February 7, 2022

BNO Acoustics GK-3 Close Micing

A technique of placing a microphone close to the sound source (within one foot) in order to pick up mainly the direct sound and to avoid picking up leakage or ambience.

Compander
Outboard sound equipment. Combination of a Compressor and an Expander.

BNO Acoustics SQ-9 CD-ROM
An abbreviation of the term Compact Disc, Read Only Memory (A Compact Disc used to store digital data, such as large programs, that can be read by a computer).

Clipping
Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.

BNO Acoustics TR-12 Floor
1) An alternate tam meaning Range (a limit on the amount the signal is reduced when the input signal is low by an expander or gate).
2) A shortening of the term Noise Floor (the level of the noise).

Digital Recording
1) ADAM : (Akai Digital Audio Multitrack). 12 track recording onto Video 8 tape. 16 bit, 44.1 or 48 kHz sampling rate.
2) DAT (Digital Audio Tape) Cassette-like system which has much higher quality than standard audio cassettes. Widely used in gathering sound effects, for news gathering, and for playback of music.
3) DCC (Digital Compact Cassette) Rival to DAT which also plays standard audio cassettes.
4) MiniDisc : Uses computer disk technology, rather than tape. A laser heats an area of magnetic disk which is then written to by a magnetic head. When cooled, the magnetic information is read from the disk by laser. Tracks can be named, and are instant start. Very theatre-friendly system.
5) Direct to Disk : Uses the hard disk present in most PCs as the recording medium.

Input Impedance
The opposition to current flow by the first circuits of a device.

Efficiency
The acoustic power delivered for a given electrical input. Often expressed as decibels/watt/meter (dB/w/m). ESL �" Abbreviation for electrostatic loudspeaker.

Sunday, February 6, 2022

BNO Acoustics LK-61 Absorption

Short for the term Acoustical Absorption (quality of a surface or substance to take in, not reflect, a sound wave).

Infinite Repeat
A function on some delay lines that establish enough feedback so that the repeat echo will last forever, but not so much as to cause a howling sound.

BNO Acoustics R-10 Level
The amount of signal strength; the amplitude, especially the average amplitude.

ADAT
A trademark of Alesis Corporation designating its modular digital multitrack recording system released in early 1993.

BNO Acoustics GK-3 Audio
Most often referring to electrical signals resulting from the sound pressure wave being converted into electrical energy.

Ground Adapter Plug
Adapts a three pronged electrical plug to a two pronged wall outlet. This bypasses the ground and may create a hum in the system. A lack of a good ground can cause mild electrical shock when touching a microphone.

Chorus
1) The part of The song that is repeated and has the same music and lyrics each time; the chorus will usually give the point of the song.
2) A musical singing group that has many singers.
3) A delay effect that simulates a vocal chorus by adding several delays with a mild amount of feedback and a medium amount of depth.
4) A similar effect created in some synthesizers by detuning (reducing the pitch of, slightly) and mixing it with the signal that has regular tuning and with a slight delay.

Error Message
A prompt on a computer screen telling the operator that an error has occurred.

Saturday, February 5, 2022

BNO Acoustics R-10 Speakers Compressor

A signal processing device that does not allow as much fluctuation in the level of the signal above a certain adjustable or fixed level.

Capacitance
The property of being able to oppose a change in voltage or store an electrical charge.

BNO Acoustics QT-5 Centre Frequency
The frequency of the audio signal that is boosted or attenuated most by an equalizer with a peak equalization curve.

House Sync
A synchronization signal such as SMPTE time code that is used by all recorders in the control room.

BNO Acoustics TS-10 Final Mix
The two track stereo master tape which was mixed from the multitrack master.

Guitar Processor
A unit that will add effects to a direct guitar signal, including a simulated instrument amplifier sound and (often) delay and reverb effects.

Initialize
To prepare a digital storage medium (like a floppy disk) so that it will accept and store digital information bits.

Channels
These are divided into two separate categories. Input channels are those channels coming into the soundboard such as microphones and direct lines. Output channels are those leaving the board such as monitor and main outputs.

Friday, February 4, 2022

BNO Acoustics QS-4 Impedance

1) A term for the electrical resistance found in a/c circuits. Affects the ability of a cable to transmit low level (e.g. sound) signals over a long distance. Measured in Ohms. Speakers are rated according to power handling capabilities (Watts, W) and impedance (Ohms).
2) The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker's impedance changes with frequency, it is not a constant value.
3) The opposition to alternating current.

A/D
An abbreviation of Analog to Digital Conversion (the conversion of a quantity that has continuous changes into numbers that approximate those changes), or Analog to Digital Converter.

BNO Acoustics LK-61 Compact Disc, Interactive CDI
A Compact Disc, usually containing audio, video, and text, which the user can interact with in that the display or playback changes after the user performs some action.

Distortion
Usually undesirable result of overloading sound equipment. Reducing the levels can remedy the situation.

BNO Acoustics TS-10 Console
A set of controls and their housing, which control all signals necessary for recording and mixing.

File
A collection of digital data stored in a computer's memory bank or on a floppy disc.

Baffles
Sound absorbing panels used to prevent sound waves from entering or leaving a certain space

Frequency
The number of cycles of a waveform occurring in a second.

Thursday, February 3, 2022

BNO Acoustics BP-40 Binary

A numbering system based on two. In binary there are two symbols used ("l" and "0").

Boundary Mic
A microphone mounted on a flat plate that acts as a reflective surface directing sound into the mic capsule. Used for general pick-up over a large area. See PCC, PZM.

BNO Speakers High Impedance Cord (High Z)
A big word for instrument cable. These cords generally have quarter inch male ends. they tend to loose signal strength at lengths longer than 25 feet.

Gate
A dynamic processing device that turns a channel off or down when the signal drops below a certain level.

BNO Acoustics Speakers Bass
1) The lower range of audio frequencies up to approximately 250 Hz.
2) Short for Bass Guitar.
3) Lower end of the musical scale. In acoustics, the range (below about 200 Hz) in which there are difficulties, principally in the reproduction of sound, due to the large wavelengths involved.
4) The lower frequencies.
5) On the soundboard this should refer to the bass guitar channel, not the bass drum.
6) The lowest frequencies of sound. Bi-Amplification uses an electronic crossover or line-level amplifiers for the high and low frequency loudspeaker drivers.

Formant
An element in the sound of a voice or instrument that does not change frequency as different pitches are sounded.

Effects
1) Various ways an audio signal can be modified by adding something to the signal to change the sound.
2) Short for the term Sound Effects (sounds other than dialogue, narration or music like door closings, wind, etc. added to film or video shots).

Keying Input (Key Input)
An input on a dynamics processing device to control the device by an external audio signal.

Wednesday, February 2, 2022

BNO TS-10 Insert

1) A punch in of the all of the tracks being recorded in a recording session.
2) On Solid State Logic consoles, placing an outboard piece of gear in the channel by patching and activating a switch.

Keying Input (Key Input)
An input on a dynamics processing device to control the device by an external audio signal.

BNO Acoustics QS-4 Balls
1) The depth and thickness of a sound, usually on the bottom end of the EQ (as in "needs more balls"). 2) The strength of the voice on the mic (as in "check it like you have some balls").

Amplitude
The height of a waveform above or below the zero line.

BNO Acoustics R-10 Speakers Echo Send Control
A control to send the signal from the input module to the echo chamber or effects device via the echo buss.

Layering
The recording (or playing) of a musical part with of several similar sound patches playing simultaneous.

Floor
1) An alternate tam meaning Range (a limit on the amount the signal is reduced when the input signal is low by an expander or gate).
2) A shortening of the term Noise Floor (the level of the noise).

Critical Distance
The point a distance away from the sound source where the direct sound and the reverberant sound are equal in volume.

Tuesday, February 1, 2022

BNO Acoustics YM-44 Hertz

The unit of frequency. Equivalent to cycles per second. Abbreviation: Hz.

Equalizer (Parametric, Graphic)
This is used to filter out and adjust specific frequencies in the PA. This is the part of the PA where you have the most control over the band's overall sound. It is also the number one weapon against feedback.

BNO Acoustics R-10 Speakers Group
1) A number of channels or faders that can be controlled by one Master VCA slide.
2) A shortening of the term Recording Group (a buss or the signal present on a buss).

Aux Send
Short for the term Auxiliary Send (a control to adjust the level of the signal sent from the console input channel to the auxiliary equipment through the aux buss.

BNO Acoustics TR-12 Capacitance
That property of a capacitor which determines how much charge can be stored in it for a given potential difference between its terminals, measured in farads, by the ratio of the charge stored to the potential difference.

Envelope
1) How a sound or audio signal varies in intensity over a time span.
2) How a control voltage varies in level over time controlling a parameter of something other than gain or audio level.

Clipping
Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.

Linear
The condition of obtaining a change at the output of the device which is proportional to the change occurring at the input.