Musical tone control apparatus for filter processing a musical tone waveform ONLY in a transient band between a pass-band and a stop-band

A musical tone control apparatus comprising:

• musical tone waveform generation means for generating a musical tone waveform;
• first frequency shift means for shifting a frequency band of the musical tone waveform generated by said musical tone waveform generation means in frequency without a change of density of frequency components of the frequency band;
• filter means for filter processing the musical tone waveform subjected to the frequency shift by said first frequency shift means;
• second frequency shift means for shifting the musical tone waveform subjected to filter processing by said filter means to a frequency in accordance with a musical tone pitch;
• musical tone output means for outputting the musical tone waveform subjected to the frequency shift by said second frequency shift means as the musical tone pitch;
• first frequency shift data generation means for generating first frequency shift data which determines an amount of the frequency shift by said first frequency shift means so that the frequency band of the musical tone waveform output from said musical tone waveform generation means is shifted by said first frequency shift means within a transient band of said filter means and for providing the first frequency shift data to said first frequency shift means;
• and
• second frequency shift data generation means for modifying the first frequency shift data in accordance with the musical tone pitch and for providing the modified first frequency shift data to said second frequency shift means.

A musical tone control apparatus comprising:

• musical tone waveform generation means for generating a musical tone waveform;
• frequency shift means for shifting a frequency band of the musical tone waveform generated by said musical tone waveform generation means in frequency without a change of density of frequency components of the frequency band;
• frequency shift data generation means for generating frequency shift data which determines an amount of the frequency shift by said frequency shift means and for providing the frequency shift data to said frequency shift means;
• and
• musical tone output means for outputting the musical tone waveform subjected to the frequency shift by said frequency shift means as a musical tone.

A method of musical tone waveform storage comprising the steps of:

• a) generating a musical tone waveform;
• b) shifting a frequency band of the musical tone waveform generated in said step a) in frequency without a change of density of frequency components of the frequency band;
• c) selecting and extracting at least one formant from among a plurality of formants having a same form generated in said step b) by using filter processing;
• d) storing the musical tone waveform subject to selection and extraction in said step c);
• and
• e) generating and providing first frequency shift data which determines an amount of the frequency shift in said step b).

A musical tone control apparatus comprising:

• partial musical tone waveform generation means for generating a plurality of partial musical tone waveforms having different frequency bands;
• filter means for filter processing the plurality of partial musical tone waveforms generated by said partial musical tone waveform generation means;
• synthesizing and outputting means for synthesizing the plurality of partial musical tone waveforms subjected to filter processing by said filter means and for outputting the plurality of partial musical tone waveforms synthesized as one musical tone;
• and
• gain matching means for matching gains of boundary portions of the frequency bands of the plurality of partial musical tone waveforms synthesized by said synthesizing and outputting means and bringing a gain of the frequency band of a certain one of the plurality of partial musical tone waveforms into coincidence with the gain of the frequency band of the other of the plurality of partial musical tone waveforms.