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141.发明申请公开(公告)号：US20190325883A1
公开(公告)日：2019-10-24
申请号：US16502410
申请日：2019-07-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Lei Miao , Anisse Taleb
IPC: G10L19/032 , G10L19/20 , H04N19/60 , G10L25/18 , G10L21/038
Abstract: A method for encoding a high frequency signal includes determining a signal type of a high frequency signal of a current frame, smoothing and scaling time envelopes of the high frequency signal of the current frame and obtaining time envelopes of the high frequency signal of the current frame that require to be encoded when the high frequency signal of the current frame is a non-transient signal and a high frequency signal of the previous frame is a transient signal, and quantizing and encoding the time envelopes of the high frequency signal of the current frame that require to be encoded, and frequency information and signal type information of the high frequency signal of the current frame.
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公开(公告)号：US10388295B2
公开(公告)日：2019-08-20
申请号：US15848486
申请日：2017-12-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
IPC: G10L19/12 , G10L19/02 , G10L21/038 , G10L19/08
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.
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公开(公告)号：US10388288B2
公开(公告)日：2019-08-20
申请号：US15696716
申请日：2017-09-06
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xingtao Zhang , Lei Miao
IPC: G10L19/008
Abstract: A method and an apparatus for determining an inter-channel time difference parameter are provided, so that precision of a determined ITD parameter can adapt to channel quality. The method includes: determining a target search complexity from plurality of search complexities, where the plurality of search complexities are in a one-to-one correspondence with plurality of channel quality values; and performing search processing on a signal on a first sound channel and a signal on a second sound channel according to the target search complexity so as to determine a first inter-channel time difference ITD parameter corresponding to the first sound channel and the second sound channel.
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公开(公告)号：US20190189134A1
公开(公告)日：2019-06-20
申请号：US16272394
申请日：2019-02-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Haiting Li , Zexin Liu , Xingtao Zhang , Lei Miao
IPC: G10L19/008 , H04S3/00
CPC classification number: G10L19/008 , H04S3/00 , H04S2420/03
Abstract: A method for encoding a multi-channel signal and an encoder, where the encoding method includes obtaining a multi-channel signal of a current frame, determining an initial inter-channel time difference (ITD) value of the current frame, controlling, based on characteristic information of the multi-channel signal, a quantity of target frames that are allowed to appear continuously, where the characteristic information includes at least one of a signal-to-noise ratio of the multi-channel signal or a peak feature of cross correlation coefficients of the multi-channel signal, and an ITD value of a previous frame of the target frame is reused as an ITD value of the target frame, determining an ITD value of the current frame based on the initial ITD value and the quantity of target frames allowed to appear continuously, and encoding the multi-channel signal based on the ITD value of the current frame.
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公开(公告)号：US20190180766A1
公开(公告)日：2019-06-13
申请号：US16277739
申请日：2019-02-15
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fengyan Qi , Lei Miao
IPC: G10L21/013 , G10L25/90 , G10L25/00 , G10L19/00 , G10L21/028
Abstract: A method and an apparatus for detecting correctness of a pitch period, where the method for detecting correctness of a pitch period includes determining, according to an initial pitch period of an input signal in a time domain, a pitch frequency bin of the input signal, where the initial pitch period is obtained by performing open-loop detection on the input signal, determining, based on an amplitude spectrum of the input signal in a frequency domain, a pitch period correctness decision parameter, associated with the pitch frequency bin, of the input signal, and determining correctness of the initial pitch period according to the pitch period correctness decision parameter. Hence, the method and apparatus for detecting correctness of the pitch period improve, based on a relatively less complex algorithm, accuracy of detecting correctness of the pitch period.
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Patent Agency Ranking
公开(公告)号：US10269366B2
公开(公告)日：2019-04-23
申请号：US15986839
申请日：2018-05-23
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Abstract: An audio encoding method and a related apparatus are disclosed. The audio coding method includes: obtaining an audio signal; obtaining spectral coefficients of a current frame of the audio signal; obtaining a set of reference coding parameters of the current frame; determining whether the set of reference coding parameters satisfy a preset parameter condition; when it is determined that the reference coding parameters satisfy the preset parameter condition, encoding the spectral coefficients of the current frame using a transform coded excitation (TCX) algorithm. The audio encoding method and the related apparatus help improve encoding quality or encoding efficiency in audio signal encoding.
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公开(公告)号：US20190096415A1
公开(公告)日：2019-03-28
申请号：US16201647
申请日：2018-11-27
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/022 , G10L19/12 , G10L21/038 , G10L19/032 , G10L19/20 , G10L25/45 , G10L19/135
Abstract: A method and an apparatus for processing a temporal envelope of an audio signal, and an encoder, where when multiple temporal envelopes are solved, continuity of signal energy can be well maintained, and in addition, complexity of calculating a temporal envelope is reduced. The method includes obtaining a high-band signal of the current frame audio signal according to the received current frame audio signal, dividing the high-band signal of the current frame signal into M subframes according to a predetermined temporal envelope quantity M, where M is an integer greater than or equal to two, calculating a temporal envelope of each of the subframes, performing windowing on the first subframe of the M subframes and the last subframe of the M subframes using an asymmetric window function, and performing windowing on a subframe except the first subframe and the last subframe of the M subframes.
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公开(公告)号：US10218856B2
公开(公告)日：2019-02-26
申请号：US15596260
申请日：2017-05-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Bin Wang , Bingyin Xia , Zexin Liu , Lei Miao
IPC: G06F3/16 , G10L19/008 , H04M11/06 , G10L19/16 , H04M7/00 , H04N7/15 , G10L21/038 , G10L19/24
Abstract: Present disclosure disclose a voice signal processing method, includes: receiving a first voice coded signal from a first terminal; performing voice decoding processing on the first voice coded signal to obtain a voice decoding parameter and a first voice decoded signal; performing, by using the voice decoding parameter, virtual bandwidth extension processing to obtain a bandwidth extension voice decoded signal corresponding to the first voice decoded signal; after combining the first voice decoded signal and the bandwidth extension voice decoded signal, performing voice coding processing to obtain a second voice coded signal; and sending the second voice coded signal to a second terminal that establishes a call connection to the first terminal, where a maximum frequency bandwidth supported by the first terminal is less than a maximum frequency bandwidth supported by the second terminal. Thus, Service quality of terminals that have asymmetric maximum frequency bandwidth support capabilities can be improved.
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公开(公告)号：US10210880B2
公开(公告)日：2019-02-19
申请号：US15677324
申请日：2017-08-15
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Abstract: An encoding method, a decoding method, an encoding apparatus, a decoding apparatus, a transmitter, a receiver, and a communications system. The 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, and 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. A technical solution according to the embodiments of the present application can improve an encoding and/or decoding effect.
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公开(公告)号：US20180374488A1
公开(公告)日：2018-12-27
申请号：US16021621
申请日：2018-06-28
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
IPC: G10L19/00 , G10L19/083 , G10L19/02
CPC classification number: G10L19/00 , G10L19/0204 , G10L19/083
Abstract: The present invention discloses a speech/audio signal processing method and apparatus. In an embodiment, the speech/audio signal processing method includes: when a speech/audio signal switches bandwidth, obtaining an initial high frequency signal corresponding to a current frame of speech/audio signal; obtaining a time-domain global gain parameter of the initial high frequency signal; performing weighting processing on an energy ratio and the time-domain global gain parameter, and using an obtained weighted value as a predicted global gain parameter, where the energy ratio is a ratio between energy of a historical frame of high frequency time-domain signal and energy of a current frame of initial high frequency signal; correcting the initial high frequency signal by using the predicted global gain parameter, to obtain a corrected high frequency time-domain signal; and synthesizing a current frame of narrow frequency time-domain signal and the corrected high frequency time-domain signal and outputting the synthesized signal.
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