Patent ID: 7642445

Claim:
A music sound generator comprising: a sound instructing means for outputting a sound start instruction based on key-pressing information and outputting a sound stop instruction based on the key-pressing information and operation device information; a normal music sound waveform storing means for storing a normal music sound waveform; a normal music sound signal generating means for generating a normal music sound signal by using the normal music sound waveform; a released key string vibration sound signal generating means including a released key string vibration sound signal generating filter which generates a released key string vibration sound signal by filtering the normal music sound waveform; a plurality of filtering means into which the normal music sound signal and released key string vibration sound signal are inputted, respectively; and an adding means for adding the normal music sound signal and the released key string vibration sound signal, wherein in response to the sound start instruction, reading of the normal music sound waveform to the released key string vibration sound signal generating filter from the normal music sound waveform storing means is started by sufficiently lowering a cut-off frequency of the released key string vibration sound signal by the plurality of filtering means, and wherein in response to the sound stop instruction, the sufficiently lowered cut-off frequency is raised and the normal music sound signal and the released key string vibration sound signal are attenuated according to predetermined envelopes.