发明名称 |
Audio coding and decoding apparatuses and methods, and recording mediums storing the methods |
摘要 |
Audio coding and decoding apparatuses and methods that can optimize the quality of an audio signal including harmonics, and recording mediums storing the methods. An audio coding apparatus includes: a first harmonic coding module performing first harmonic coding on an input audio signal using a pitch lag of the input audio signal and producing a quantized linear prediction coding coefficient; a first detector detecting a first difference audio signal from a difference between an audio signal output from the first harmonic coding module and the input audio signal; a second harmonic coding module performing harmonic coding on the first difference audio signal using the quantized linear prediction coding coefficient and a previous harmonic coding result; a second detector detecting a second difference audio signal obtained from a difference between an audio signal output from the second harmonic coding module and the first difference audio signal; and a code excited linear prediction (CELP) module CELP coding the second difference audio signal using the quantized linear prediction coding coefficient obtained from the first harmonic coding module.
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申请公布号 |
US2006206316(A1) |
申请公布日期 |
2006.09.14 |
申请号 |
US20060333342 |
申请日期 |
2006.01.18 |
申请人 |
SAMSUNG ELECTRONICS CO. LTD. |
发明人 |
SUNG HOSANG;TAORI RAKESH;LEE KANGEUN |
分类号 |
G10L11/04 |
主分类号 |
G10L11/04 |
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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