Discussion in 'Effects, Pedals, Strings & Things' started by imaguy2, May 19, 2011.
What is an analog delay compounder circuit, and what sort of sound does it impart on the delay!?
Compressor + Expander = Compandor
The basic idea is to limit the amplitude of the signal entering the delay line to prevent clipping the delay line input (compressor), and restore the signal's amplitude after the delay line to approximate original signal amplitude (expander).
When designed properly, a compandor circuit will not only reduce/prevent clipping/distortion but can also reduce the noise present in the delay line, and improve the fidelity of the delay effect. Datasheets for specific ICs will detail this process far better than I can in this short response.
Sometimes, compandors are associated with "clicky" sounding repeats, overly compressed dynamics, and abrupt changes in decay. As usual, much of the overall sound and response of the circuit is affected by a variety of factors, the compressor and expander being only a small piece of the entire equation.
I hope this information is found relevant and useful.