发明名称 |
Scalable speech coding/decoding apparatus, method, and medium having mixed structure |
摘要 |
Provided are a scalable wide-band speech coding/decoding apparatus, method, and medium. An input wide-band speech input signal is first divided into a low-band signal and a high-band signal. The divided low-band signal is then coded using a code excited linear prediction (CELP) method. The divided high-band signal is coded using a harmonic method. A signal representing a difference between a synthetic signal obtained from the low-band and the high band, and a signal input to the low-band and the high-band is then coded using a modified discrete cosine transform (MDCT) method. The coded signal is then multiplexed. The multiplexed signal is then output. Accordingly, high quality speech can be achieved for all layers.
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申请公布号 |
US2007033023(A1) |
申请公布日期 |
2007.02.08 |
申请号 |
US20060490139 |
申请日期 |
2006.07.21 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
SUNG HOSANG;KIM SANGWOOK;TAORI RAKESH;LEE KANGEUN |
分类号 |
G10L19/02 |
主分类号 |
G10L19/02 |
代理机构 |
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主权项 |
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