发明名称 |
AN APPARATUS AND A METHOD FOR CALCULATING A NUMBER OF SPECTRAL ENVELOPES |
摘要 |
An apparatus calculates a number of spectral envelopes to be derived by a spectral band replication (SBR) encoder, wherein the SBR encoder is adapted to encode an audio signal using a plurality of sample values within a predetermined number of subsequent time portions in an SBR frame extending from an initial time to a final time, the predetermined number of subsequent time portions being arranged in a time sequence given by the audio signal. The apparatus has a decision value calculator for determining a decision value, the decision value measuring a deviation in spectral energy distributions of a pair of neighboring time portions. The apparatus further has a detector for detecting a violation of a threshold by the decision value and a processor for determining a first envelope border between the pair of neighboring time portions when the violation of the threshold is detected. |
申请公布号 |
KR20110038029(A) |
申请公布日期 |
2011.04.13 |
申请号 |
KR20117000542 |
申请日期 |
2009.06.23 |
申请人 |
FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E. V. |
发明人 |
NEUENDORF MAX;GRILL BERNHARD;KRAEMER ULRICH;MULTRUS MARKUS;POPP HARALD;RETTELBACH NIKOLAUS;NAGEL FREDERIK;LOHWASSER MARKUS;GAYER MARC;JANDER MANUEL;BACIGALUPO VIRGILIO |
分类号 |
G10L19/00;G10L21/02 |
主分类号 |
G10L19/00 |
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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