Data reproduction device, method thereof and storage medium

Details Data reproduction device, method thereof and storage medium Data reproduction device, method thereof and storage medium

2001-02-21

2008-08-26

Azad, Abul (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

Reexamination Certificate

active

07418393

ABSTRACT:
A frame, which is the data unit, is extracted without decoding MPEG audio data. Then, a scale factor included in the frame is extracted and an evaluation function is calculated based on the scale factor. If the value of the evaluation function is larger than a prescribed threshold value, the speed of the frame is converted. If the value of the evaluation function is smaller than the prescribed threshold value, the frame is judged to be a frame in a silent section and neglected. The speed conversion is made by thinning out frames or repeating the same frame as many times as required according to prescribed rules.

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Office Action issued in corresponding Japanese Patent Application No. 2000-157042, mailed on Mar. 18, 2008.
Japanese Patent Office Action mailed Dec. 18, 2007 for corresponding Japanese Patent Application No. 2000-157042.

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