Project Details
Outline of Final Research Achievements
A scalable transmission in which a signal of the home reproduction system is embedded in a 22.2 channel signal usually requires a matrix conversion. However, if the converted signal is coded by an audio codec, the quantization noise that should be masked by the other sounds becomes audible after decoded and inversely converted. In this research, a noise compression method was developed and the audible noise was reduced by more than 20dB within a time delay of 340 ms.
| Status | Finished |
|---|---|
| Effective start/end date | 2014/04/01 → 2017/03/31 |
Funding
- Japan Society for the Promotion of Science: ¥5,200,000.00
Keywords
- マルチチャネルオーディオ
- 圧縮符号化
- スケーラブル伝送
- 空間音響
- 音響信号処理
- オーディオ符号化
- アンマスキング雑音
- 雑音抑圧
- チャネル間コヒーレント成分
- マルチチャネル音響
- 符号化
- 量子化雑音
- 行列の条件数