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公开(公告)号：US20160210979A1
公开(公告)日：2016-07-21
申请号：US15080950
申请日：2016-03-25
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
CPC classification number: G10L19/12 , G10L19/0208 , G10L19/06 , G10L19/08 , G10L19/24 , G10L21/038 , G10L2019/0016
Abstract: A method and an apparatus for predicting a high band excitation signal are disclosed. The method includes: acquiring, according to a received low band bitstream, a set of spectral frequency parameters that are arranged in an order of frequencies, calculating a spectral frequency parameter difference between every two spectral frequency parameters that have a same position interval; acquiring a minimum spectral frequency parameter difference from the calculated spectral frequency parameter differences; determining, according to a frequency bin that corresponds to the minimum spectral frequency parameter difference, a start frequency bin for predicting a high band excitation signal from a low band; and predicting the high band excitation signal from the low band according to the start frequency bin. By implementing embodiments of the present invention, a high band excitation signal can be better predicted, thereby improving performance of the high band excitation signal.
Abstract translation: 公开了一种用于预测高频带激励信号的方法和装置。 该方法包括：根据接收到的低频带比特流获取以频率顺序排列的一组频谱频率参数，计算具有相同位置间隔的每两个频谱频率参数之间的频谱频率参数差; 从所计算的频谱频率参数差获取最小频谱参数差; 根据对应于最小频谱频率参数差的频率仓确定用于从低频段预测高频带激励信号的起始频率仓; 并根据起始频率仓预测来自低频段的高频激励信号。 通过实现本发明的实施例，可以更好地预测高频带激励信号，从而提高高频带激励信号的性能。
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132.发明申请Method for Predicting Bandwidth Extension Frequency Band Signal, and Decoding Device 有权预测带宽扩展频带信号和解码设备的方法公开(公告)号：US20150332688A1
公开(公告)日：2015-11-19
申请号：US14806896
申请日：2015-07-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
IPC: G10L19/02
CPC classification number: G10L19/12 , G10L19/02 , G10L19/08 , G10L21/038
Abstract: A method for predicting a bandwidth extension frequency band signal includes demultiplexing a received bitstream to obtain a frequency domain signal; determining whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; predicting an excitation signal of the bandwidth extension frequency band according to the determination; and predicting the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band.
Abstract translation: 一种用于预测带宽扩展频带信号的方法包括解复用接收的比特流以获得频域信号; 确定频域信号中哪一位被分配的最高频率仓是否小于带宽扩展频带的预设起始频率仓; 根据确定预测带宽扩展频带的激励信号; 以及根据带宽扩展频带的预测激励信号和带宽扩展频带的频率包络来预测带宽扩展频带信号。
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133.发明授权公开(公告)号：US12154578B2
公开(公告)日：2024-11-26
申请号：US18393866
申请日：2023-12-22
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/008 , G10L19/02 , G10L19/032
Abstract: A multi-channel signal encoding method includes determining a downmixed signal of a first channel signal and a second channel signal, determining an initial reverberation gain parameter of the first channel signal and the second channel signal, determining a target reverberation gain parameter of the first channel signal and the second channel signal based on a correlation between the first channel signal and the downmixed signal, a correlation between the second channel signal and the downmixed signal, and the initial reverberation gain parameter, quantizing the first channel signal and the second channel signal based on the downmixed signal and the target reverberation gain parameter, and writing a quantized first channel signal and a quantized second channel signal into a bitstream.
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公开(公告)号：US12100401B2
公开(公告)日：2024-09-24
申请号：US18489875
申请日：2023-10-19
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zexin Liu , Fengyan Qi , Lei Miao
IPC: G10L19/002 , G10L19/005 , G10L19/02 , G10L19/028
CPC classification number: G10L19/002 , G10L19/005 , G10L19/0204 , G10L19/028
Abstract: In a method to decode signals, a computing device decodes spectral coefficients of a current frame are grouped into a plurality of sub-bands. The computing device classifies a sub-band as a bit allocation unsaturated sub-band based on an average quantity of allocated bits per spectral coefficient of a sub-band of the plurality of sub-bands and a threshold. The computing device obtains a noise filling gain based on an envelope of the sub-band, and obtains a reconstructed spectral coefficient of the sub-band by performing noise filling based on the noise filling gain. The computing device then obtains a frequency domain audio signal based on spectral coefficients in the sub-band obtained by decoding and the reconstructed spectral coefficient.
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公开(公告)号：US11935548B2
公开(公告)日：2024-03-19
申请号：US17408116
申请日：2021-08-20
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Xingtao Zhang , Haiting Li , Lei Miao
IPC: G10L19/008 , G10L19/022 , G10L19/032 , G10L25/03 , H04S3/00
CPC classification number: G10L19/008 , G10L19/022 , G10L19/032 , G10L25/03 , H04S3/00
Abstract: A multi-channel signal encoding method includes obtaining a multi-channel signal of a current frame; determining an initial multi-channel parameter of the current frame; determining a difference parameter based on the initial multi-channel parameter of the current frame and multi-channel parameters of previous K frames of the current frame, where the difference parameter represents a difference between the initial multi-channel parameter of the current frame and the multi-channel parameters of the previous K frames, and K is an integer greater than or equal to one; determining a multi-channel parameter of the current frame based on the difference parameter and a characteristic parameter of the current frame; and encoding the multi-channel signal based on the multi-channel parameter of the current frame.
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Patent Agency Ranking
公开(公告)号：US11910180B2
公开(公告)日：2024-02-20
申请号：US18173542
申请日：2023-02-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Cal Armstrong , Gavin Kearney , Bin Wang , Zexin Liu
CPC classification number: H04S7/303 , H04S2400/01 , H04S2420/01
Abstract: An audio processing method includes processing, by M first virtual speakers, a to-be-processed audio signal to obtain M first audio signals; processing, by N second virtual speakers, the to-be-processed audio signal to obtain N second audio signals; obtain M first head-related transfer functions (HRTFs) centered at a left ear position and N second HRTFs centered at a right ear position; obtain a first target audio signal based on the M first audio signals and the M first HRTFs; and obtain a second target audio signal based on the N second audio signals and the N second HRTFs.
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137.发明授权公开(公告)号：US11894001B2
公开(公告)日：2024-02-06
申请号：US17837558
申请日：2022-06-10
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/008 , G10L19/02 , G10L19/032
CPC classification number: G10L19/008 , G10L19/0204 , G10L19/032
Abstract: A multi-channel signal encoding method includes determining a downmixed signal of a first channel signal and a second channel signal, determining an initial reverberation gain parameter of the first channel signal and the second channel signal, determining a target reverberation gain parameter of the first channel signal and the second channel signal based on a correlation between the first channel signal and the downmixed signal, a correlation between the second channel signal and the downmixed signal, and the initial reverberation gain parameter, quantizing the first channel signal and the second channel signal based on the downmixed signal and the target reverberation gain parameter, and writing a quantized first channel signal and a quantized second channel signal into a bitstream.
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公开(公告)号：US11869520B2
公开(公告)日：2024-01-09
申请号：US17868879
申请日：2022-07-20
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: G10L19/03 , G10L19/12 , G10L19/26 , G10L19/265 , G10L21/038 , G10L19/0204 , G10L2019/0016
Abstract: An encoding method includes dividing a to-be-encoded time-domain signal into a low band signal and a high band signal, performing encoding on the low band signal to obtain a low frequency encoding parameter, performing encoding on the high band signal to obtain a high frequency encoding parameter, obtaining a synthesized high band signal, performing short-time post-filtering processing on the synthesized high band signal to obtain a short-time filtering signal, and calculating a high frequency gain based on the high band signal and the short-time filtering signal.
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公开(公告)号：US11863964B2
公开(公告)日：2024-01-02
申请号：US17879114
申请日：2022-08-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Gavin Kearney , Cal Armstrong , Bin Wang , Zexin Liu
CPC classification number: H04S7/303 , H04R5/04 , H04S7/305 , H04S2400/01 , H04S2400/11 , H04S2420/01
Abstract: M audio signals are obtained by processing an audio signal by M virtual speakers; M first HRTFs and M second HRTFs are obtained, where the M first HRTFs corresponding to a left ear position, and the M second HRTFs corresponding to a right ear position; high-band impulse responses of some of the M first HRTFs are modified to obtain modified first target HRTFs, and high-band impulse responses of some of the M second HRTFs are modified to obtain modified second target HRTFs; a first target audio signal corresponding to the left ear position is obtained based on the modified first target HRTFs and un-modified first HRTFs, and the M audio signals; and a second target audio signal corresponding to the right ear position is obtained based on the modified second HRTFs, un-modified second target HRTFs, and the M audio signals.
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140.发明授权公开(公告)号：US11832087B2
公开(公告)日：2023-11-28
申请号：US17504080
申请日：2021-10-18
Applicant: Huawei Technologies Co., Ltd.
IPC: H04S7/00 , G10K15/08 , G10L19/008 , G10L19/16 , G10L19/22
CPC classification number: H04S7/305 , G10K15/08 , G10L19/008 , G10L19/173 , G10L19/22
Abstract: A multi-channel signal encoding method includes determining a downmixed signal of a first channel signal and a second channel signal in a multi-channel signal, and reverberation gain parameters corresponding to different subbands of the first channel signal and the second channel signal, where the obtained reverberation gain parameters are belonging to at least two reverberation gain parameter groups. The method further includes selecting, from the at least two reverberation gain parameter groups, a target reverberation gain parameter group. The method further includes generating parameter indication information, where the parameter indication information indicates the target reverberation gain parameter group. The method further includes encoding reverberation gain parameters corresponding to the target reverberation gain parameter group, the parameter indication information, and the downmixed signal to obtain a bitstream.
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