Audio recompression from higher rates for karaoke, video games, and other applications
US5974387A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1997 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Jun 17, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/595
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
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 t…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.