Speed-variable audio play-back apparatus

Details Speed-variable audio play-back apparatus Speed-variable audio play-back apparatus

1995-09-28

1998-07-14

MacDonald, Allen R.

395 216, 395 215, 395 233, G01L 900

Patent

active

057816964

ABSTRACT:
A speed-variable audio play-back apparatus which includes a pitch detecting circuit for separating speech source components and audio characteristics from an input audio signal, a pitch modulating unit for deleting selected ones of the separated speech source components or adding another speech source components to the separated speech source components depending on a play-back speed, thereby adjusting the length of the audio signal to be played back, a speech synthesizing circuit for synthesizing the speech source components and audio characteristics modulated by the pitch modulating unit, thereby outputting a speed-varied audio signal; and a main controller for controlling the above components in accordance with control signals externally applied thereto. With this arrangement, it is possible to play back audio stored in a storage medium at an adjusted speed while preventing degradation in tone color and loss of audio signals from occurring upon varying the play-back speed when the audio is played back by an apparatus such as a tape player, VTR, multimedia equipment, or computer, so that the played-back audio sounds like a person speaking quickly or slowly.

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JAPIO abstract of JP57154607A; Dialog(R)File 347:JAPIO; (c) JPO & JAPIO

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