Patent ID: 6430294
Filing Date: 2002-08-06
Classification: H04S

Abstract:
A delay amount control apparatus for delaying an externally supplied input signal based on an externally supplied delay coefficient to output a delayed input signal, comprising:delay amount detecting means for detecting as to whether or not said delay coefficient is changed; delay amount saving means for saving a delay coefficient before being changed when said delay amount detecting means detects that the delay coefficient is changed; delay means for outputting a first delay signal produced by delaying the externally supplied input signal by a delay amount designated by said delay coefficient before being changed, which is saved in said delay mount saving means, and also a second delay signal produced by delaying the externally supplied input signal by a delay amount designated by the externally supplied delay coefficient; and cross-fade mixing means for cross-fading said first delay signal and said second delay signal outputted from said delay means so as to mix said first delay signal with said second delay signal, wherein said delay means includes a memory into which said externally supplied input signal is continuously stored and from which said externally supplied input signal existing in a location addressed by a reading address composed of said delay coefficient is read out, and said delay amount detecting means detects a change of said reading address.