The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 15, 2005
Filed:
Feb. 11, 2003
Tetsuo Nishimoto, Hamamatsu, JP;
Tetsuo Nishimoto, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
There is provided a musical tone generating apparatus that is capable of generating more natural musical tones even when musical tone waveform data is generated at a recording sampling frequency lower than a sampling frequency, by recovering harmonic components missing in the musical tone waveform data. All frequency components included in musical tone waveform data read out from a tone color data memory are shifted in a positive direction by a predetermined frequency lower than half the recording sampling frequency. The lower frequency components of the shifted frequency components than the half the recording sampling frequency are cut off by an HPF. The amplitude of the musical tone waveform data from which the frequency component is cut off is adjusted by a multiplier. Then, the musical tone waveform data adjusted in amplitude and the original musical tone waveform data read out are added together, and a musical tone is generated based on a result of the addition.