- 专利标题: Concept for switching of sampling rates at audio processing devices
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申请号: US16996671申请日: 2020-08-18
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公开(公告)号: US11443754B2公开(公告)日: 2022-09-13
- 发明人: Stefan Doehla , Guillaume Fuchs , Bernhard Grill , Markus Multrus , Grzegorz Pietrzyk , Emmanuel Ravelli , Markus Schnell
- 申请人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 申请人地址: DE Munich
- 专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
- 当前专利权人地址: DE Munich
- 代理机构: Perkins Coie LLP
- 代理商 Michael A. Glenn
- 优先权: EP14181307 20140818
- 主分类号: G10L19/24
- IPC分类号: G10L19/24 ; G10L19/16 ; G10L19/20 ; G10L19/18 ; G10L19/22 ; G10L19/04 ; G10L19/00
摘要:
Audio decoder device for decoding a bitstream, the audio decoder device including: a predictive decoder for producing a decoded audio frame from the bitstream, wherein the predictive decoder includes a parameter decoder for producing one or more audio parameters for the decoded audio frame from the bitstream and wherein the predictive decoder includes a synthesis filter device for producing the decoded audio frame by synthesizing the one or more audio parameters for the decoded audio frame; a memory device including one or more memories, wherein each of the memories is configured to store a memory state for the decoded audio frame, wherein the memory state for the decoded audio frame of the one or more memories is used by the synthesis filter device for synthesizing the one or more audio parameters for the decoded audio frame; and a memory state resampling device configured to determine the memory state for synthesizing the one or more audio parameters for the decoded audio frame, which has a sampling rate, for one or more of the memories by resampling a preceding memory state for synthesizing one or more audio parameters for a preceding decoded audio frame, which has a preceding sampling rate being different from the sampling rate of the decoded audio frame, for one or more of the memories and to store the memory state for synthesizing of the one or more audio parameters for the decoded audio frame for one or more of the memories into the respective memory.