Brooks RM 909 reviews Chase

The automatic adjusting of the speed of a recorder (or sequencer) to be time with another recorder.

In Port
A jack on a MIDI device or computer that will accept an incoming data signal.

Brooks RM 909 Impedance
1) A term for the electrical resistance found in a/c circuits. Affects the ability of a cable to transmit low level (e.g. sound) signals over a long distance. Measured in Ohms. Speakers are rated according to power handling capabilities (Watts, W) and impedance (Ohms).
2) The total opposition offered by an electric circuit to the flow of an alternating current of a single frequency. It is a combination of resistance and reactance and is measured in ohms. Remember that a speaker's impedance changes with frequency, it is not a constant value.
3) The opposition to alternating current.

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.

Brooks HI FI projectors Effects
Electronic boxes (usually rack mounted) added to a PA system to subtly change and enhance the signals going through it. Examples include; Reverb, Delay, Compressor, Chorus.

Lead Sheet
A written chart showing the melody, lyrics and chords of a tune with full musical notation.

Chorus
Common type of effect that makes sounds fuller and thicker.

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

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.