BNO Acoustics TR-12: Modulation Noise

Noise that is present only when the audio signal is present.

Phase Lock
1) In the control of tape machines, a method of keeping machines synced together by sensing phase differences in the playback of pilot tunes by the two machines and adjustment of speed to eliminate the phase difference.
2) In synthesizers, the control of one tone generator so that it begins its waveform in phase with the signal from another tone generator.

BNO Acoustics QS-4: Buss (Bus)
A wire carrying signals to some place, usually fed from several sources.

Spaced Pair
Any two microphones spaced to get a stereo pickup especially using the Spaced Omni or Spaced Cardioid techniques.

Undo
A command in some computer software that reverses the last command entered.

Quantization Distortion/Quantization Error
A modulation noise (also perceived as a distortion) that occurs in digital processing/recording caused by the sample levels being altered to conform to standard Quantization levels.

Early Reflections
The first echoes in a room, caused by the sound from the sound source reflecting off one surface before reaching the listener.