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. 13, 2001
Filed:
Feb. 22, 2000
Roland Corporation, Osaka, JP;
Abstract
A method for generating a compressed or expanded waveform from original waveform data is disclosed. A plurality of frequency band-divided waveform data is generated from the original waveform data. Phase and amplitude data having periodically changing amplitudes are extracted for each of the plurality of frequency band-divided waveform data. The periodically changing phase data is converted to periodically changing frequency data, and a temporal change rate of the periodically changing amplitude and frequency data is adjusted for each of the plurality of frequency band-divided waveform data. The temporally adjusted amplitude and frequency data for the plurality of frequency band-divided waveform data is then combined to generate the compressed or expanded waveform.