发明名称 |
High-band speech coding apparatus and high-band speech decoding apparatus in wide-band speech coding/decoding system and high-band speech coding and decoding method performed by the apparatuses |
摘要 |
A high-band speech encoding apparatus and a high-band speech decoding apparatus that can reproduce high quality sound even at a low bitrate when wideband speech encoding and decoding using a bandwidth extension function, and a high-band speech encoding and decoding method performed by the apparatuses. The high-band speech encoding apparatus includes: a first encoding unit encoding a high-band speech signal based on a structure in which a harmonic structure and a stochastic structure are combined, if the high-band speech signal has a harmonic component; and a second encoding unit encoding a high-band speech signal based on a stochastic structure if the high-band speech signal has no harmonic components. The high-band speech decoding apparatus includes: a first decoding unit decoding a high-band speech signal based on a combination of a harmonic structure and a stochastic structure using received first decoding information; a second decoding unit decoding the high-band speech signal based on a stochastic structure using received second decoding information; and a switch outputting one of the decoded high-band speech signals received from the first and second decoding units according to received mode selection information.
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申请公布号 |
US2006149538(A1) |
申请公布日期 |
2006.07.06 |
申请号 |
US20050285183 |
申请日期 |
2005.11.23 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
LEE KANGEUN;SON CHANGYONG;LEE INSUNG;SHIN JAEHYUN;KIM JONGHUN;JUNG KYUHYUK;AHN YOUNGWOOK |
分类号 |
G10L19/10 |
主分类号 |
G10L19/10 |
代理机构 |
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地址 |
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