Method and apparatus for reproducing audio signals at various sp

Details Method and apparatus for reproducing audio signals at various sp Method and apparatus for reproducing audio signals at various sp

1999-08-27

2000-07-11

Hindi, Nabil

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 54, G11B 700

Patent

active

060883138

ABSTRACT:
In a method of reproducing audio signals of the present invention, audio reproducing speed can be changed without changing tone and quality of audio signals. Audio signals are filtered to extract basic audio signals. Zero-cross points in the basic audio signals are detected. The original audio signals are divided into a plurality of frames on the basis of the zero-cross points on a time axis. The frames are thinned out, and the original audio signals are reproduced as voice on the basis of the frames left so as to accelerate reproducing speed. On the other hand, the original audio signals are reproduced by repeating the frame so as to make reproducing speed slower.

REFERENCES:
patent: 4091242 (1978-05-01), Carrubba et al.

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