Patent ID: 7495166

Claim:
A sound-processing apparatus comprising: a synchronized-sound-generation device for generating at least one or more new synchronized sound signal that is synchronized with a sound signal to be modulated; a parameter-detection device for detecting a parameter that indicates an attribute of the generated synchronized sound signal; a converted-signal-generation device for generating a converted signal based on the detected parameter; a modulation device for modulating the sound signal based on the generated converted signal; and a time-difference-setting device used for setting a starting time difference between the sound to be modulated and the synchronized sound to be generated; wherein the synchronized-sound-generation device generates the synchronized sound having at least one or more time difference based on at least one or more time difference that is set by the time-difference-setting device, wherein the parameter-detection device detects the beat of the synchronized sound signal, wherein the converted-signal-generation device comprises: a sound-level-detection device for detecting the sound level of the synchronized sound signal of the detected beat portion; and a detection-sensitivity-setting device for setting the detection sensitivity for the sound-level-detection device; and wherein the modulation device changes modulation of the sound signal to be modulated based on the detected sound level.