发明名称 |
Encoder, decoder, encoding method, and decoding method |
摘要 |
An encoding apparatus and method for generating low-frequency-band encoding information and high-frequency-band encoding information from an original signal. The encoding apparatus includes a first spectrum calculator that calculates a first spectrum of a low frequency band from a decoded signal of the low-frequency-band encoding information, a second spectrum calculator that calculates a second spectrum from the original signal, an estimator that divides a high frequency band of the second spectrum into a plurality of bands and estimates the second spectrum included in each band, using the first spectrum, and a first error component encoder that encodes a first error component between the high frequency band of the second spectrum and an estimated spectrum. A corresponding decoding apparatus and method provides decoding. |
申请公布号 |
US8204745(B2) |
申请公布日期 |
2012.06.19 |
申请号 |
US201113158944 |
申请日期 |
2011.06.13 |
申请人 |
OSHIKIRI MASAHIRO;EHARA HIROYUKI;YOSHIDA KOJI;PANASONIC CORPORATION |
发明人 |
OSHIKIRI MASAHIRO;EHARA HIROYUKI;YOSHIDA KOJI |
分类号 |
G10L19/02;G10L21/02 |
主分类号 |
G10L19/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|