发明名称 |
A BANDWIDTH EXTENDER |
摘要 |
<p>An apparatus for extending the bandwidth of an audio signal, the apparatus being configured to: generate an excitation signal from an audio signal, wherein in the audio signal comprises a plurality of frequency components; extract a feature vector from the audio signal, wherein the feature vector comprises at least one frequency domain component feature and at least one time domain component feature; determine at least one spectral shape parameter from the feature vector, wherein the at least one spectral shape parameter corresponds to a sub band signal comprising frequency components which belong to a further plurality of frequency components; and generate the sub band signal by filtering the excitation signal through a filter bank and weighting the filtered excitation signal with the at least one spectral shape parameter.</p> |
申请公布号 |
SG185606(A1) |
申请公布日期 |
2012.12.28 |
申请号 |
SG20120084364 |
申请日期 |
2010.05.25 |
申请人 |
NOKIA CORPORATION |
发明人 |
MYLLYLA, VILLE MIKAEL;LAAKSONEN, LAURA;PULAKKA, HANNU JUHANI;ALKU, PAAVO ILMARI |
分类号 |
G10L19/02;G10L19/26;G10L21/02;G10L21/038 |
主分类号 |
G10L19/02 |
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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