发明名称 |
ADAPTIVE TIME/FREQUENCY-BASED AUDIO ENCODING AND DECODING APPARATUSES AND METHODS |
摘要 |
<p>Adaptive time/frequency-based audio encoding and decoding apparatuses and methods. The encoding apparatus includes a transformation & mode determination unit to divide an input audio signal into a plurality of frequency-domain signals and to select a time-based encoding mode or a frequency-based encoding mode for each respective frequency-domain signal, an encoding unit to encode each frequency-domain signal in the respective encoding mode, and a bitstream output unit to output encoded data, division information, and encoding mode information for each respective frequency-domain signal. In the apparatuses and methods, acoustic characteristics and a voicing model are simultaneously applied to a frame, which is an audio compression processing unit. As a result, a compression method effective for both music and voice can be produced, and the compression method can be used for mobile terminals that require audio compression at a low bit rate.</p> |
申请公布号 |
WO2007055507(A1) |
申请公布日期 |
2007.05.18 |
申请号 |
WO2006KR04655 |
申请日期 |
2006.11.08 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
KIM, JUNG-HOE;OH, EUN-MI;SON, CHANG-YONG;CHOO, KI-HYUN |
分类号 |
G11B20/10;G10L19/02;G10L19/12;G10L19/20 |
主分类号 |
G11B20/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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