A double grounding of a line or electronic device at two different "ground" points of differing voltage.
Compact Disc CD
A small optical disk with digital audio recorded on it.
BNO Acoustics XR-90: Insulator
A substance such as glass, air, plastic, etc., that will (for all practical purposes) not conduct electricity.
Effects Track
1) In film production audio, a recording of the mixdown of all the sound effects for the film ready to be mixed with the dialogue and music.
2) In music recording, one track with a recording of effects to be added to another track of a multitrack recording.
BNO Acoustics SQ-9: 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.
Ribbon Mic
Delicate mic not suitable for high sound pressure levels. Consists of a corrugated conductive foil strip suspended between opposing magnetic poles which is excited by pressure differences between the front and rear of the microphone and induces a current.
Semi-Pro
A class of recording equipment where professional or near-professional performance can be obtained but the equipment is not built to withstand the amount of continuous use that professional equipment would be expected to receive and sometimes is missing features needed in a professional installation.
Friday, January 31, 2020
Thursday, January 30, 2020
BNO Acoustics TR-12: Multitrack Recording
1) A technique of recording various instruments separately on different portions of the same tape, in time with each other and so that final balancing of the sound may be accomplished later.
2) A technique of digitally recording various instruments onto a hard disk in different data files so the may be played in time with each other and final balancing of the sound may be accomplished later.
Quality Factor
The ratio of reactance to resistance in a coil which affects Q.
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 GK-3: Bulk Dump
Short for System Exclusive Bulk Dump (a method of transmitting data, such as the internal parameters of a MIDI device to another MIDI device).
Ready
A control state of one track of a multitrack tape recorder where the track will go into record when the record function of the tape recorder is activated.
Echo Return
An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device.
Loudness
1) How loud something sounds to the ear.
2) Causing equal volume changes at all frequency ranges including frequency response changes at lower operating levels to compensate for the Fletcher Munson effect.
2) A technique of digitally recording various instruments onto a hard disk in different data files so the may be played in time with each other and final balancing of the sound may be accomplished later.
Quality Factor
The ratio of reactance to resistance in a coil which affects Q.
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 GK-3: Bulk Dump
Short for System Exclusive Bulk Dump (a method of transmitting data, such as the internal parameters of a MIDI device to another MIDI device).
Ready
A control state of one track of a multitrack tape recorder where the track will go into record when the record function of the tape recorder is activated.
Echo Return
An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device.
Loudness
1) How loud something sounds to the ear.
2) Causing equal volume changes at all frequency ranges including frequency response changes at lower operating levels to compensate for the Fletcher Munson effect.
Wednesday, January 29, 2020
BNO Acoustics Speakers: Spot Erase
The action or function of erasing a very small segment of one track (or several tracks) of a multitrack recording by disengaging the normal tape drive system while the machine is in record; the engineer moves the tape by hand or by using a shuttle control.
Boom Stand
A microphone stand equipped with a telescoping support arm to hold the microphone.
BNO Acoustics GK-3: Infinite Baffle
A baffle so large that the sounds coming from one side do not reach the other side.
BNO Acoustics SQ-9: Producer
The 'director' of an audio recording project responsible to get a final product of desired quality within a budget.
Track Signal
The signal sent to or coming back from one track of a multitrack tape recorder.
M
1) This is the Greek letter "mu", which is actually a forerunner of the English "M", however, the lower-case "u" is often used in place of it because of it's similar appearance.
2) This symbol is used for micro- (one millionth).
3) m s means two microseconds which is 2/1,000,000 of a second.
BNO Acoustics HD-70: Loudspeaker
Device for converting the electrical signal from an amplifier back into sound waves, most commonly by vibrating a paper cone. Most speaker systems are composed of a number of sources � each designed to handle a specific range of frequencies. See Tweeters and Woofers, Bi-Amplification.
Boom Stand
A microphone stand equipped with a telescoping support arm to hold the microphone.
BNO Acoustics GK-3: Infinite Baffle
A baffle so large that the sounds coming from one side do not reach the other side.
BNO Acoustics SQ-9: Producer
The 'director' of an audio recording project responsible to get a final product of desired quality within a budget.
Track Signal
The signal sent to or coming back from one track of a multitrack tape recorder.
M
1) This is the Greek letter "mu", which is actually a forerunner of the English "M", however, the lower-case "u" is often used in place of it because of it's similar appearance.
2) This symbol is used for micro- (one millionth).
3) m s means two microseconds which is 2/1,000,000 of a second.
BNO Acoustics HD-70: Loudspeaker
Device for converting the electrical signal from an amplifier back into sound waves, most commonly by vibrating a paper cone. Most speaker systems are composed of a number of sources � each designed to handle a specific range of frequencies. See Tweeters and Woofers, Bi-Amplification.
Tuesday, January 28, 2020
BNO Acoustics YM-44: VCA
Abbreviation for Voltage Controlled Amplifier (an amplifier that will change gain according to the level of control voltage sent to it).
BNO Acoustics QS-4: Repeat Echo
An echo effect caused by discrete repeats of a program source by using a long delay time and feedback on a delay line. Also called Space Echo.
BNO Acoustics LK-61: Test Tape
1) A less formal name for Alignment Calibration Tape (a test tape with tones of various frequencies all precisely recorded at a specified magnetic recording level used for tape machine alignment).
2) One of a few initial tapes made with high-speed duplication, and is listened to for approving the quality before production copies are made in volume.
BNO Acoustics GT-60: Volume Envelope
How a musical instrument sounding a pitch changes in volume over time.
Pressure Operated Microphone
A term meaning the same thing as the term Pressure Microphone. See the preceding entry.
Foldback
A European term for the signal sent to the stage monitors in a live performance.
PCM
An abbreviation for the term Pulse Code Modulation (the use of amplitude pulses in magnetic tape to record the digital information bits of digital audio).
BNO Acoustics QS-4: Repeat Echo
An echo effect caused by discrete repeats of a program source by using a long delay time and feedback on a delay line. Also called Space Echo.
BNO Acoustics LK-61: Test Tape
1) A less formal name for Alignment Calibration Tape (a test tape with tones of various frequencies all precisely recorded at a specified magnetic recording level used for tape machine alignment).
2) One of a few initial tapes made with high-speed duplication, and is listened to for approving the quality before production copies are made in volume.
BNO Acoustics GT-60: Volume Envelope
How a musical instrument sounding a pitch changes in volume over time.
Pressure Operated Microphone
A term meaning the same thing as the term Pressure Microphone. See the preceding entry.
Foldback
A European term for the signal sent to the stage monitors in a live performance.
PCM
An abbreviation for the term Pulse Code Modulation (the use of amplitude pulses in magnetic tape to record the digital information bits of digital audio).
Monday, January 27, 2020
BNO Acoustics LK-61: Shelf
A frequency response of an equalization circuit where the boost or cut of frequencies forms a shelf on a frequency response graph. A High-Frequency Shelf control will affect signal levels at the set frequency and all frequencies higher than it; a Low-Frequency Shelf control will affect signal levels at the set frequency and all frequencies lower than it.
Loop
1) A term meaning the same as Anti-Node (the points of maximum displacement of motion in a vibrating stretched string).
2) A tape (or magnetic film) recording where the ends of the tape are spliced together in such a manner that the tape will continually repeat.
3) A repeating of an audio sample with no gap in between.
Horn
1) The part of the speaker that emits midrange and higher range frequencies.
2) A speaker or speaker enclosure where sound waves are put into a narrow opening (by a speaker cone or driver) and the narrow opening flairs out to a larger opening.
File
A collection of digital data stored in a computer's memory bank or on a floppy disc.
BNO Acoustics XR-90: Phase Reversal
A change in a circuit to get the waveform to shift by 180 degrees.
BNO Acoustics BP-40: Lift
1) To boost gain of audio at a particular band of frequencies with an equalizer.
2) An elevation device in the star trek series of TV programs.
Sample Rate Conversion
The conversion of digital audio at one sample rate to digital audio at a different sample rate without first converting the signal to analog.
Loop
1) A term meaning the same as Anti-Node (the points of maximum displacement of motion in a vibrating stretched string).
2) A tape (or magnetic film) recording where the ends of the tape are spliced together in such a manner that the tape will continually repeat.
3) A repeating of an audio sample with no gap in between.
Horn
1) The part of the speaker that emits midrange and higher range frequencies.
2) A speaker or speaker enclosure where sound waves are put into a narrow opening (by a speaker cone or driver) and the narrow opening flairs out to a larger opening.
File
A collection of digital data stored in a computer's memory bank or on a floppy disc.
BNO Acoustics XR-90: Phase Reversal
A change in a circuit to get the waveform to shift by 180 degrees.
BNO Acoustics BP-40: Lift
1) To boost gain of audio at a particular band of frequencies with an equalizer.
2) An elevation device in the star trek series of TV programs.
Sample Rate Conversion
The conversion of digital audio at one sample rate to digital audio at a different sample rate without first converting the signal to analog.
Sunday, January 26, 2020
BNO Speakers: Low End
A slang term for bass-frequency signals (below 250 Hz).
Unity Gain
No increase or decrease in signal strength at the output of an amplifier or device compared to the signal strength at the input.
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.
Moving Fader Automation
In consoles, a feature that lets the engineer program fader level changes so that these changes happen automatically upon playback of the multitrack recording because the fader positions actually change. (The faders are diven by motors).
BNO Acoustics SQ-9: Acoustic Amplifier
The portion of the instrument which makes the vibrating source move more air or move air more efficiently; this makes the sound of the instrument louder. Examples of acoustic amplifiers include:
1) The body of an acoustic guitar,
2) The sounding board of a piano,
3) The bell of a horn and
4) The shell of a drum.
Series Connection
Connecting devices (especially circuit elements) so that the electrical signal flows from one thing to the next, to the next, so forth.
Tape Loop
A length of tape with the ends spliced together so that the recording will continuously play.
Unity Gain
No increase or decrease in signal strength at the output of an amplifier or device compared to the signal strength at the input.
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.
Moving Fader Automation
In consoles, a feature that lets the engineer program fader level changes so that these changes happen automatically upon playback of the multitrack recording because the fader positions actually change. (The faders are diven by motors).
BNO Acoustics SQ-9: Acoustic Amplifier
The portion of the instrument which makes the vibrating source move more air or move air more efficiently; this makes the sound of the instrument louder. Examples of acoustic amplifiers include:
1) The body of an acoustic guitar,
2) The sounding board of a piano,
3) The bell of a horn and
4) The shell of a drum.
Series Connection
Connecting devices (especially circuit elements) so that the electrical signal flows from one thing to the next, to the next, so forth.
Tape Loop
A length of tape with the ends spliced together so that the recording will continuously play.
Saturday, January 25, 2020
BNO Acoustics TR-12: On Axis
The position of directly in front of the diaphragm of a microphone, in line with its movement.
Short (Short Circuit)
A direct connection between two points in a circuit that (usually) should not be connected.
Variable-D
A patented invention (and trademark) of Electrovoice where several port are put down the case of the microphone. The ports are less and less sensitive to high frequencies as they are further away from the diaphragm, reducing proximity effect.
Efficiency
The acoustic power delivered for a given electrical input. Often expressed as decibels/watt/meter (dB/w/m). ESL � Abbreviation for electrostatic loudspeaker.
Serial Port
A jack that sends out or receives digital data one bit after another, through a single pin.
BNO Acoustics QT-5: Haas Effect
Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.
Phone Plug (Jack)
A plug (or its mating jack) with a diameter of 1/4 inch and a length of I 1/4 inches used for interconnecting audio.
Short (Short Circuit)
A direct connection between two points in a circuit that (usually) should not be connected.
Variable-D
A patented invention (and trademark) of Electrovoice where several port are put down the case of the microphone. The ports are less and less sensitive to high frequencies as they are further away from the diaphragm, reducing proximity effect.
Efficiency
The acoustic power delivered for a given electrical input. Often expressed as decibels/watt/meter (dB/w/m). ESL � Abbreviation for electrostatic loudspeaker.
Serial Port
A jack that sends out or receives digital data one bit after another, through a single pin.
BNO Acoustics QT-5: Haas Effect
Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.
Phone Plug (Jack)
A plug (or its mating jack) with a diameter of 1/4 inch and a length of I 1/4 inches used for interconnecting audio.
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