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:
Jun. 25, 2002
Filed:
Dec. 08, 2000
Chifumi Takeuchi, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu, JP;
Abstract
A musical sound signal synthesizer with a simple construction for synthesizing complex musical sound waveform signals including many harmonics in a peculiar form. A phase information generator supplies phase information x with a sawtooth wave changing according to a phase of the musical sound to be generated via a calculator to a sine wave table , from which output waveform information y is read out. The waveform information y is fed back to the calculator via an absolute value transformer , a low pass filter and a gain controller . The output waveform information y outputted from the sine table is transformed nonlinearly, which is fed back to the phase information x, which makes a complex change. As a result thereof, the waveform, which is represented by waveform information outputted from the sine wave table , becomes peculiar for a musical sound signal synthesized by phase or frequency modulation technique.