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:
Apr. 13, 2004
Filed:
Oct. 18, 2000
Atsushi Hoshiai, Ozaki Hannan, JP;
Roland Corporation, Osaka, JP;
Abstract
The present invention relates to an audio waveform reproduction apparatus for reproducing a recorded audio waveform at a reproduction tempo that can be specified as desired, and its object is to achieve that the reproduction does not deviate from the tempo when performed at a tempo that is different from the tempo at the time of recording of the audio waveform. The audio waveform reproduction apparatus includes a storage means for storing waveform data of the audio waveform, an input means for inputting reproduction tempo information, a first information production means for producing first information (TP) that is a time function based on the reproduction tempo information, a second information production means for producing second information (PP) that is a time function based on time axis compression/expansion information (TR), a compression/expansion information production means for comparing the first information and the second information and calculating the time axis compression/expansion information (TR) towards matching the temporal change of the second information with the temporal change of the first information, and a time axis compression/expansion processing means for performing time axis compression/expansion processing based on the time axis compression/expansion information (TR) to produce a reproduction audio waveform, wherein the first information (TP) and the second information (PP) represent positions on a common axis.