Audio information reproduction device and audio information...

Details Audio information reproduction device and audio information... Audio information reproduction device and audio information...

2006-07-18

2006-07-18

Knepper, David D. (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

C704S270000, C084S636000

Reexamination Certificate

active

07080016

ABSTRACT:
Audio information is read out of a recording medium which records musical pieces as audio information. The audio information read out is processed to detect BPM values and positions of beats in the musical piece. A musical piece is reproduced from the recording medium by reproducing audio information in accordance with the detected BPM values and positions of beats. The BPM value indicates the tempo of a musical piece, and the beat indicates a strength of a sound which repeatedly appears in each musical piece. When the audio information is reproduced in accordance with the detected BPM values and positions of beats, the musical piece is reproduced at the correct tempo and beats without giving an unnatural feeling to the listener.

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Scheirer E D: “Tempo and Beat Analysis of Acoustic Musical Signals”, Journal of the Acoustical Society of America, American Institute of Physics. New York, US,vol. 103, No. 1, Jan. 1998, pp. 588-601, XP008007174.

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