Digital audio processing

摘要

Digital audio processing apparatus for applying a time-varying gain to an input digital audio signal over contiguous first, second and third time periods, in which: the applied gain changes at no more than a first maximum rate of change during the first time period; the applied gain changes at no more than a second maximum rate of change during the third time period; and during the second time period the rate of change of the applied gain varies monotonically from a substantially zero rate of change towards the second maximum rate of change.