- 专利标题： APPARATUS AND METHOD FOR NOISE SHAPING USING SUBSPACE PROJECTIONS FOR LOW-RATE CODING OF SPEECH AND AUDIO
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申请号： EP19199807.9申请日： 2019-09-26
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公开(公告)号： EP3629327A1公开(公告)日： 2020-04-01
- 发明人: Fischer, Johannes , Bäckström, Tom
- 申请人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
- 申请人地址： Hansastraße 27c 80686 München DE
- 专利权人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
- 当前专利权人： FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V.
- 当前专利权人地址： Hansastraße 27c 80686 München DE
- 代理机构： Schairer, Oliver
- 优先权： EP18197377 20180927; US201816170151 20181025
- 主分类号： G10L19/02
- IPC分类号： G10L19/02
摘要：
An apparatus for encoding an audio input signal to obtain an encoded audio signal is provided. The apparatus comprises a transformation module (110) configured to transform the audio input signal from an original domain to a transform domain to obtain a transformed audio signal. Moreover, the apparatus comprises an encoding module (120), configured to quantize the transformed audio signal to obtain a quantized signal, and configured to encode the quantized signal to obtain the encoded audio signal. The transformation module (110) is configured to transform the audio input signal depending on a plurality of predefined power values of quantization noise in the original domain.
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