Recording Handbook - Hol.gr

level and cuts it off when it drops below that level.
Imagine you play a chord on your guitar, which is connected to a noise
gate, which is then connected to your amp. The noise gate 'sees' a
decent signal level and lets the sound through. You then damp the
chord off with your hand.. The noise gate sees the signal level drop
and cuts the sound off. If the gate weren't there, you'd still hear
all the low level stuff like hum, the sound of your hand sliding on
the strings, the sound of the guitar clanking against your belt
buckle. As soon as you play a note, the gate 'opens' and you hear the
guitar again.
Q2.5 What is (upward) expansion?
marcl508@hudson.iii.net (Marc LaFleur) writes:
Upward expansion is the inverse of compression. Where compression
decreases excessive peaks over a threshold, upward expansion decreases
excessive troughs below a threshold. As the signal falls below a
preset lower threshold, the gain is scaled "upward" by the set ratio
(e.g. an input signal falling below the threshold by 10dB would be
boosted to 5dB below the threshold with a ratio of 2:1).
Q2.6 What is companding?
Adapted from lwillia@ix.netcom.com (Larry Williams):
96
96