Music-signal compressing/decompressing apparatus
US6605768B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2001 |
| Grant date | Aug 12, 2003 |
| Priority date | — |
| Expiry date | Mar 2, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2250/585
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Upon receipt of a music signal from a music-signal input section, a sound-source separating section in a preprocessing section separates the music signal into a plurality of signals in units of the type of audio source. A physical-property converting section changes a physical property of each of the signals on the basis of control information received from a control-information input section. A signal-synthesizing section synthesizes a plurality of output signals outputted from the physical-property converting section, and supplies the resultant signal to a data-compressing section. For example, in compressed data, a high data rate is allocated to a vocal, whereas low data rates are allocated to other parts. As a result, quality improvement can be implemented in auditory perceptibility of a musically important part.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.