Patent ID: 8729376

Claim:
A musical sound synthesizing apparatus comprising: a loop part including at least a delay element, the loop part being configured to receive an excitation signal in response to a sound generation instruction so as to synthesize a musical sound signal by looping the excitation signal therein; a waveform memory that stores first waveform data representing sound which is generated by a natural musical instrument and which contains resonance, the first waveform data containing a plurality of frequency components having various levels; and a waveform processing unit that removes, from the first waveform data, one or more frequency component having a level that does not reach a predetermined level, to generate second waveform data, wherein the waveform processing unit comprises: a separator that separates the first waveform data into waveform data of a plurality of frequency bands; a plurality of level controllers that respectively correspond to the plurality of the frequency bands, each level controller detecting a level of the waveform data of the corresponding frequency band and damping the waveform data when the detected level does not reach the predetermined level, thereby removing a frequency component contained in the first waveform data; and a waveform synthesizer that mixes the waveform data output from the plurality of the level controllers to generate the second waveform data, wherein the second waveform data generated by the waveform processing unit is input as the excitation signal to the loop part.