Calista C2-88 Projector Amplitude

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

Leakage
Sounds from other instruments and sources that were not intended to be picked up by the microphone.

Calista C1-9 Home Theater 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.

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

Calista C3-S Security System 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.

Comb Filter
1) The frequency response achieved by mixing a direct signal with a delayed signal of equal strength especially at short delays.
2) Loosely used to also describe effects that can be achieved with comb filtering as part of the processing.

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

AES
An abbreviation of Audio Engineering Society.

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