GUITARS ARE NATURALLY PERCUSsive— pluck a string, and a quick transient decays rapidly. Although we often try to violate the laws of physics with compression, feedback, limiting, distortion, E-Bows, and other techniques that increase sustain, there’s a parallel universe where the goal is making the guitar more percussive. Of course, muting strings is very percussive, but we can take this concept much further with signal processors.
Expanders. These are the opposite of compressors (which above a certain threshold, produce less output for an equivalent input increase). With expanders, signals below a threshold produce less output for a given input decrease. For example, if the input is below the threshold, and it drops 10dB, with 1:2 expansion, the output will drop 20dB. With 1:4 expansion, it will drop 40dB. This can…
