发明名称 |
APPARATUS AND METHOD FOR GENERATING A FREQUENCY ENHANCEMENT SIGNAL USING AN ENERGY LIMITATION OPERATION |
摘要 |
An apparatus for generating a frequency enhancement signal, includes: a signal generator for generating an enhancement signal from a core signal, the enhancement signal including an enhancement frequency range not included in the core signal, wherein a time portion of the enhancement signal includes subband signals for a plurality of subbands; a synthesis filterbank for generating the frequency enhanced signal using the enhancement signal, wherein the signal generator is configured for performing an energy limitation in order to make sure that the frequency enhanced signal obtained by the synthesis filterbank is so that an energy of a higher band is, at the most, equal to an energy in a lower band or is greater than an energy of a higher band, at the most, by a predefined threshold. |
申请公布号 |
US2015332707(A1) |
申请公布日期 |
2015.11.19 |
申请号 |
US201514811790 |
申请日期 |
2015.07.28 |
申请人 |
Fraunhofer-Gesellschaft zur Foerderung der angwandten Forschung e.V. |
发明人 |
DISCH Sascha;GEIGER Ralf;HELMRICH Christian;MULTRUS Markus;SCHMIDT Konstantin |
分类号 |
G10L21/0388;G10L19/12;G10L19/032 |
主分类号 |
G10L21/0388 |
代理机构 |
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代理人 |
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主权项 |
1. Apparatus for generating a frequency enhancement signal, comprising:
a signal generator for generating an enhancement signal from a core signal, the enhancement signal comprising an enhancement frequency range not comprised in the core signal, wherein a time portion of the enhancement signal comprises one or more subband signals for single subband or a plurality of subbands; a synthesis filterbank for generating the frequency enhanced signal using the enhancement signal, wherein the signal generator is configured for performing an energy limitation in order to make sure that the frequency enhanced signal acquired by the synthesis filterbank is so that an energy of a higher band is, at the most, equal to an energy in a lower band or is greater than an energy of a higher band, at the most, by a predefined threshold. |
地址 |
Munich DE |