发明名称 |
ENCODING METHOD, DECODING METHOD, ENCODER, DECODER, PROGRAM, AND RECORDING MEDIUM |
摘要 |
In encoding, a frequency-domain sample sequence derived from an acoustic signal is divided by a weighted envelope and is then divided by a gain, the result obtained is quantized, and each sample is variable-length encoded. The error between the sample before quantization and the sample after quantization is quantized with information saved in this variable-length encoding. This quantization is performed under a rule that specifies, according to the number of saved bits, samples whose errors are to be quantized. In decoding, variable-length codes in an input sequence of codes are decoded to obtain a frequency-domain sample sequence; an error signal is further decoded under a rule that depends on the number of bits of the variable-length codes; and from the obtained sample sequence, the original sample sequence is obtained according to supplementary information. |
申请公布号 |
US2014019145(A1) |
申请公布日期 |
2014.01.16 |
申请号 |
US201214007844 |
申请日期 |
2012.03.26 |
申请人 |
MORIYA TAKEHIRO;HARADA NOBORU;KAMAMOTO YUTAKA;HIWASAKI YUSUKE;FUKUI MASAHIRO;NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
MORIYA TAKEHIRO;HARADA NOBORU;KAMAMOTO YUTAKA;HIWASAKI YUSUKE;FUKUI MASAHIRO |
分类号 |
G10L19/005 |
主分类号 |
G10L19/005 |
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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