公开(公告)号：US10057702B2

公开(公告)日：2018-08-21

申请号：US15616654

申请日：2017-06-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Juergen Geiger ,  Peter Grosche

IPC: H04S1/00

CPC classification number: H04S1/002

Abstract: The disclosure relates to an audio signal processing apparatus for modifying a stereo image of a stereo signal. The apparatus includes a panning index modifier configured to apply a mapping function to at least all panning indexes of stereo signal time-frequency segments that are within a frequency bandwidth, a first panning gain determiner configured to determine modified panning gains for time-frequency signal segments of the first and second audio signal based on the modified panning indexes, and a re-panner configured to re-pan the stereo signal according to ratios between the modified panning gains and panning gains of the first and second audio signal that correspond to the modified panning gains in time and frequency.

公开(公告)号：US10210883B2

公开(公告)日：2019-02-19

申请号：US15428723

申请日：2017-02-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Juergen Geiger ,  Peter Grosche

IPC: G10L21/0316 ,  G10L21/0272 ,  H04S3/00 ,  H04S5/00

Abstract: A signal processing apparatus for enhancing a voice component within a multi-channel audio signal comprising a left channel audio signal, a center channel audio signal, and a right channel audio signal, the signal processing apparatus comprising a filter and a combiner; wherein the filter is configured to determine an overall magnitude of the multi-channel audio signal over frequency based on the multi-channel audio signal, to obtain a gain function based on a ratio between a magnitude of the center channel audio signal and the overall magnitude of the multi-channel audio signal, and to weight the left channel audio signal, the center channel audio signal, and the right channel audio signal by the gain function; and wherein the combiner is configured to combine individually the left channel audio signal, the center channel audio signal, and the right channel audio signal with the weighted right channel audio signal.

公开(公告)号：US20170272881A1

公开(公告)日：2017-09-21

申请号：US15616654

申请日：2017-06-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Juergen Geiger ,  Peter Grosche

IPC: H04S1/00

CPC classification number: H04S1/002

Abstract: The disclosure relates to an audio signal processing apparatus for modifying a stereo image of a stereo signal. The apparatus includes a panning index modifier configured to apply a mapping function to at least all panning indexes of stereo signal time-frequency segments that are within a frequency bandwidth, a first panning gain determiner configured to determine modified panning gains for time-frequency signal segments of the first and second audio signal based on the modified panning indexes, and a re-panner configured to re-pan the stereo signal according to ratios between the modified panning gains and panning gains of the first and second audio signal that correspond to the modified panning gains in time and frequency.

公开(公告)号：US10484808B2

公开(公告)日：2019-11-19

申请号：US15920006

申请日：2018-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Juergen Geiger ,  Peter Grosche

IPC: H04S5/00 ,  H04R3/04 ,  G10L21/038 ,  H04S7/00 ,  H03G5/16 ,  G10L21/0364 ,  G10L19/008

Abstract: Example audio signal processing apparatuses and methods for processing an input audio signal into an output audio signal are disclosed. An example audio signal processing apparatus comprises a decomposer configured to decompose the input audio signal into a direct audio signal and a diffuse audio signal, a modifier configured to modify the direct audio signal in order to obtain a modified direct audio signal, wherein the modifier comprises a bandwidth extender configured to extend an upper cutoff frequency of a frequency range of the direct audio signal, and a combiner configured to combine the modified direct audio signal with the diffuse audio signal to obtain the output audio signal.