An excitation signal.
Upon a negative to positive transition, the excitation signal will be fed into the delay line.
Maximum delay time in seconds (initializes the internal delay buffer). (init-time only)
Delay time in seconds.
Time for the echoes to decay by 60 decibels. Negative times emphasize odd partials.
the coefficient of the internal OnePole filter. Values should be between -1 and +1 (larger values will be unstable... so be careful!).