User manual

Page 34 User manual P1 Audio Processor
Many instruments and vocalists have a natural vibrato which finds it’s
way into the compressor control side-chain causing the gain to move
up and down in sympathy. This is extremely undesirable and causes
high levels of non-linear distortion.
The P1’s peakride design overcomes these problems by the use of
three separate control side-chains which act in the time domain
(rather than in the frequency domain of a multi-band compressor).
Above the compressor’s threshold;
Short duration audio bursts (such as percussion) get processed with
the fast attack fast release compression which they tend to require.
Longer duration audio bursts get processed with an initial attack time
as set on the front panel and an initial short release time but; as the
audio sample continues, the attack and release times are
progressively lengthened according to two factors;
 The time the audio sample has been above the compressor
threshold
 The continuing dynamics of the audio signal
Even the use of a manually set release time (requiring constant
adjustment) cannot achieve the low levels of distortion which the P1
design delivers.
A second problem with traditional fast attack compressor designs is
caused by a misunderstanding between the desirability for fast