I would just like a get eveyone's view on the purposes/"what they do" on a compressor.
They way I understand it is, the threshold is the dB level that is reached by a signal that causes the knee + threshold settings to come in effect and "compress" the signal.
So the knee is a combination of the threshold and ratio. The threshold is the apex of the knee correct? And the ratio is the angle of the knee after that apex? That is a very basic overview but the ratio is the proportion a signal must be compressed once crossing that threshold.
Look forward to the responses.