发明名称 |
Audio (de)coding apparatus and method |
摘要 |
<p>Disclosed is a decoder capable of improving the sound quality of a decoded sound signal in an encoding method which combines speech encoding and music encoding in a hierarchical structure. A transform-encoding decoding unit (202) decodes transform-encoded data to generate a spectrum of a decoded transform-encoded signal. A band decision unit (203) uses the spectrum of the decoded transform-encoded signal to decide whether each of a plurality of bands in which frequency components of an input signal are divided constitute a first band in which a transform encoded pulse is not established or a second band in which said pulse is established. A CELP component suppression unit (207) suppresses the spectrum of a CELP decoded signal, which is the frequency component of a decoded signal of CELP encoded data, to the extent that suppression in the first band is weaker than suppression in the second band.</p> |
申请公布号 |
EP2581904(B1) |
申请公布日期 |
2015.10.07 |
申请号 |
EP20110792106 |
申请日期 |
2011.05.27 |
申请人 |
PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA |
发明人 |
KAWASHIMA, TAKUYA;OSHIKIRI, MASAHIRO |
分类号 |
G10L19/22;G10L19/02;G10L19/12;G10L19/24;H03M7/30 |
主分类号 |
G10L19/22 |
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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