System for controlling voice speed of an input signal

Details System for controlling voice speed of an input signal System for controlling voice speed of an input signal

1994-09-14

1997-03-11

Tung, Kee M.

395 22, 395 217, 395 276, G10L 302

Patent

active

056110189

ABSTRACT:
In a voice speed converting system according to the present invention, an input sound signal is subjected to voice speed conversion processing by a voice speed conversion processing device. Output from the voice speed conversion processing device is written to a ring memory. Data written to the ring memory are read out at a predetermined speed. The amount of stored data in the ring memory is calculated on the basis of a write signal and a read signal for the ring memory by stored data amount calculating device. The voice speed converting device includes a section judging device that judges which of a voice section and a silence section corresponds to the input sound signal. The input sound signal is subjected to compression and expansion processing or deletion processing, in response to an output of the section judging device and an output of the stored data amount calculating device by a signal processing device.

REFERENCES:
patent: 5189702 (1993-02-01), Sakurai et al.
patent: 5305420 (1994-04-01), Nakamura et al.
Technical Report of IEICE SP92-54, "A Development of Portable DSP System for Speech Processing", Nejime et al, Sep. 1992.
Research Institute of Applied Electricity, Hokkaido University, "Applications of Digital Technique to the Aid for the Hearing Impaired", by Tohru Ifukube, 1991; vol. 47, No. 10, pp. 760-765, from Journal of Acoustical Society of Japan.
Neijime et al. "Evaluation of speech-rate conversion method by hearing-impaired listeners", pp. 25-31. Published in The Institute of Electronics Information and Communication Engineers, Technical Report of ICEE, SP92-150: 1993, 03.

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