Brooks Hi Fi speakers Gate

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

Cable, TRS
A less common balanced cable that has 3 different contacts on its 1/4 inch connectors. Most headphone jacks are a good example of a TRS (Tip-Ring-Sleeve) connector. These are sometimes used instead of the more common XLR connection.

Brooks RM 909 Compression Ratio
How many dB the input signal has to rise above the threshold for every one dB more output of a compressor or limiter.

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).

Brooks RM 909 reviews Earth
The British version of the term Ground (In electronics, a place that has zero volts).

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).

Harmonic Distortion
The presence of harmonics in the output signal of a device which were not present in the input signal.

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.