BNO Acoustics HD-70 Barrier Micing

A method of placing the head of a microphone as close as possible to a reflective surface, preventing phase cancellation.

Head Amp
British name for Preamplifier (A low-noise amplifier designed to take a low-level signal, such as the output of a tape head, and bring it up to normal line level).

BNO Acoustics QT-5 Diaphragm
A thin flexible membrane or cone that vibrates in response to electrical signals to produce sound waves. Distortion is usually referred to in terms of total harmonic distortion (THD) which is the percentage of unwanted harmonics of the drive signal present with the wanted signal. Generally used to mean any unwanted change introduced by the device under question.

Far Field
The area from 3 feet away from the sound source up to the critical distance.

BNO Acoustics GT-60 Hi-Z
An abbreviation of the term High Impedance (Impedance of 5000 or more ohms).

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.

Basic Session
The First session in recording an audio production to record the Basic Tracks.

Acoustic Echo Chamber
A room designed with very hard, non-parallel surfaces and equipped with a speaker and microphone; dry signals from the console are fed to the speaker and the microphone will have a reverberation of these signals that can be mixed in with the dry signals at the console.