发明名称 |
DEVICE AND METHOD FOR REDUCING QUANTIZATION NOISE IN A TIME-DOMAIN DECODER |
摘要 |
The present disclosure relates to a device and method for reducing quantization noise in a signal contained in a time-domain excitation decoded by a time-domain decoder. The decoded time-domain excitation is converted into a frequency-domain excitation. A weighting mask is produced for retrieving spectral information lost in the quantization noise. The frequency-domain excitation is modified to increase spectral dynamics by application of the weighting mask. The modified frequency-domain excitation is converted into a modified time-domain excitation. The method and device can be used for improving music content rendering of linear-prediction (LP) based codecs. Optionally, a synthesis of the decoded time-domain excitation may be classified into one of a first set of excitation categories and a second set of excitation categories, the second set including INACTIVE or UNVOICED categories, the first set including an OTHER category. |
申请公布号 |
EP2965315(A1) |
申请公布日期 |
2016.01.13 |
申请号 |
EP20140760909 |
申请日期 |
2014.01.09 |
申请人 |
VOICEAGE CORPORATION |
发明人 |
VAILLANCOURT, TOMMY;JELINEK, MILAN |
分类号 |
G10L19/03;G10L19/12;G10L19/26;G10L21/0208;G10L21/0232;G10L25/21;G10L25/78;G10L25/93 |
主分类号 |
G10L19/03 |
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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