Patent ID: 6754351
Filing Date: 2004-06-22
Classification: G10H,Y10S

Abstract:
An apparatus for imparting acoustic effects to an audio signal by executing microprograms every sampling period, the apparatus comprising:processing means having a process capacity only sufficient to execute a limited number of microprogram steps of microprograms within one sampling period to create acoustic effects in processing of the audio signal; selecting means operable in advance of the processing of the audio signal for selecting a number of microprograms comprising a first total number of microprogram steps over the limited number of microprogram steps; setting means for setting a level of the acoustic effect to be created by each of the selected microprograms so that each microprogram is made inactive when the acoustic effect thereof is set to a zero level and otherwise is made active when the acoustic effect is set to other than the zero level; and controlling means for controlling the processing means to execute the active microprograms comprising a second total number of microprogram steps within the limited number of microprogram steps while each inactive microprogram is not executed to thereby achieve efficient use of the process capacity of the processing means.