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:
May. 26, 2015
Filed:
Jan. 20, 2012
Tokio Shirakawa, Hamamatsu, JP;
Tokio Shirakawa, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
A musical tone signal generating apparatus has waveform memory WM which stores a plurality of compressed data sets obtained by compressing, by linear prediction, sample values obtained by sampling musical tones. The musical tone signal generating apparatus has cache circuitwhich reads out compressed data from waveform memory WM within an assigned computing period in response to instructions to generate a musical tone, and decoding circuitwhich decodes the compressed data and outputs the decoded data as the data indicative of a sample value. The musical tone signal generating apparatus has CPUinputs tone pitch information indicative of a tone pitch of a musical tone which is to be generated, identifies waveform data which is to be read out by cache circuitfrom waveform memory WM and determines, in accordance with the identified waveform data, the length of the computing period which is to be assigned.