Audio recompression from higher rates for karaoke, video games,

Details Audio recompression from higher rates for karaoke, video games, Audio recompression from higher rates for karaoke, video games,

1997-06-17

1999-10-26

Hudspeth, David R.

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

84645, H04B 166, G10H 700

Patent

active

059743875

ABSTRACT:
Sampled sound data is compressed with a vector quantizing technique and then transmitted via a communication line. Received sound data is decoded, compressed with an ADPCM technique, and then stored into a memory. In response to a request for reproduction, the ADPCM sound data is read out, decoded, and then sounded. As another example, in a karaoke device, sample sound data is supplied after being compressed with the vector quantizing technique, in addition to MIDI-form music performance data. A music sound is reproduced on the basis of the MIDI-form music performance data, and at the same time a sound is reproduced by decoding the vector-quantized sound data. As another example, in a karaoke device, data obtained by compressing sampled sound data with the vector quantizing technique is mixed with data obtained by compressing sampled data with the ADPCM technique, and in reproduction, a predetermined decoding process is executed after identifying with which of technique is compressed data to be reproduced. As still another example, in a game device, sampled sound data, of human voice, effect sound, etc. are prestored after being compressed with the vector quantizing technique, so that in accordance with progression of a game, the data are read out and decoded for reproductive sounding.

REFERENCES:
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patent: 5388181 (1995-02-01), Anderson et al.
patent: 5490130 (1996-02-01), Akagiri
patent: 5530750 (1996-06-01), Akagiri
patent: 5767430 (1998-06-01), Yamanoue et al.

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