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公开(公告)号：US10360917B2
公开(公告)日：2019-07-23
申请号：US16021621
申请日：2018-06-28
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L19/00 , G10L19/083 , G10L19/02
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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公开(公告)号：US10354659B2
公开(公告)日：2019-07-16
申请号：US15472730
申请日：2017-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Xingtao Zhang , Bin Wang , Lei Miao
IPC: G10L19/005 , G10L19/02 , G10L19/06 , G10L19/083 , G10L19/087 , G10L19/107 , G10L25/06 , G10L25/78 , H04L12/26 , G10L19/00
Abstract: A frame loss compensation processing method and apparatus is presented, where the method includes, when a ith frame is a lost frame, estimating a spectrum frequency parameter, a pitch period, and a gain of the ith frame according to at least one of an inter-frame relationship between first N frames of the ith frame or an intra-frame relationship between first N frames of the ith frame. A parameter of the ith frame is determined using the signal correlation between the first N frames, the signal energy stability between the first N frames, intra-frame signal correlation of each frame, and intra-frame signal energy stability of each frame.
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公开(公告)号：US20190214025A1
公开(公告)日：2019-07-11
申请号：US16358237
申请日：2019-03-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xingtao Zhang , Zexin Liu , Lei Miao
IPC: G10L19/005 , G10L19/16 , G10L19/06
CPC classification number: G10L19/005 , G10L19/06 , G10L19/167 , G10L19/26 , G10L2019/0002
Abstract: A speech/audio bitstream decoding method includes acquiring a speech/audio decoding parameter of a current speech/audio frame, where the foregoing current speech/audio frame is a redundant decoded frame or a speech/audio frame previous to the foregoing current speech/audio frame is a redundant decoded frame, performing post processing on the acquired speech/audio decoding parameter according to speech/audio parameters of X speech/audio frames, where the foregoing X speech/audio frames include M speech/audio frames previous to the foregoing current speech/audio frame and/or N speech/audio frames next to the foregoing current speech/audio frame, and recovering a speech/audio signal using the post-processed speech/audio decoding parameter of the foregoing current speech/audio frame. The technical solutions of the speech/audio bitstream decoding method help improve quality of an output speech/audio signal.
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公开(公告)号：US10269357B2
公开(公告)日：2019-04-23
申请号：US15256018
申请日：2016-09-02
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Xingtao Zhang , Zexin Liu , Lei Miao
Abstract: The present invention disclose a speech/audio bitstream decoding method including: acquiring a speech/audio decoding parameter of a current speech/audio frame, where the foregoing current speech/audio frame is a redundant decoded frame or a speech/audio frame previous to the foregoing current speech/audio frame is a redundant decoded frame; performing post processing on the acquired speech/audio decoding parameter according to speech/audio parameters of X speech/audio frames, where the foregoing X speech/audio frames include M speech/audio frames previous to the foregoing current speech/audio frame and/or N speech/audio frames next to the foregoing current speech/audio frame; and recovering a speech/audio signal by using the post-processed speech/audio decoding parameter of the foregoing current speech/audio frame. The technical solutions of the present invention help improve quality of an output speech/audio signal.
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公开(公告)号：US10102862B2
公开(公告)日：2018-10-16
申请号：US14985831
申请日：2015-12-31
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L19/00 , G10L19/005 , G10L19/02 , G10L21/0232 , G10L21/0388
Abstract: Embodiments of the present disclosure provide a decoding method and a decoding apparatus. The decoding method includes: in a case in which it is determined that a current frame is a lost frame, synthesizing a high frequency band signal; determining subframe gains of multiple subframes of the current frame; determining a global gain of the current frame; and adjusting, according to the global gain and the subframe gains of the multiple subframes, the synthesized high frequency band signal to obtain a high frequency band signal of the current frame. A subframe gain of the current frame is obtained according to a gradient between subframe gains of subframes previous to the current frame, so that transition before and after frame loss is more continuous, thereby reducing noise during signal reconstruction, and improving speech quality.
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Patent Agency Ranking
公开(公告)号：US20180268830A1
公开(公告)日：2018-09-20
申请号：US15985281
申请日：2018-05-21
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
IPC: G10L19/028 , G10L21/02 , G10L19/16 , G10L21/0316 , G10L21/038 , G10L19/26
CPC classification number: G10L19/028 , G10L19/167 , G10L19/26 , G10L21/02 , G10L21/0316 , G10L21/038
Abstract: Method and apparatus are provided for reconstructing a noise component of a speech/audio signal. A bitstream, is received and decoded to obtain a speech/audio signal. A first speech/audio signal is determined according to the speech/audio signal. A symbol of each sample value in the first speech/audio signal and an amplitude value of each sample value in the first speech/audio signal is determined. An adaptive normalization length and an adjusted amplitude value of each sample value are determined according to the adaptive normalization length and the amplitude value of each sample value. A second speech/audio signal is determined according to the symbol of each sample value and the adjusted amplitude value of each sample value.
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公开(公告)号：US20180261234A1
公开(公告)日：2018-09-13
申请号：US15981645
申请日：2018-05-16
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Fengyan Qi , Zexin Liu , Lei Miao
IPC: G10L19/032 , G10L19/002 , G10L19/028 , G10L19/02
Abstract: A audio signal encoding method includes: dividing a frequency band of an audio signal into a plurality of sub-bands, and quantifying a sub-band normalization factor of each sub-band; determining signal bandwidth of bit allocation according to the quantified sub-band normalization factor, or according to the quantified sub-band normalization factor and bit rate information; allocating bits for a sub-band within the determined signal bandwidth; and coding a spectrum coefficient of the audio signal according to the bits allocated for each sub-band. According to embodiments of the present disclosure, during coding and decoding, signal bandwidth of bit allocation is determined according to the quantified sub-band normalization factor and bit rate information. In this manner, the determined signal bandwidth is effectively coded and decoded by centralizing the bits, and audio quality is improved.
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公开(公告)号：US09984697B2
公开(公告)日：2018-05-29
申请号：US14789755
申请日：2015-07-01
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fengyan Qi , Zexin Liu , Lei Miao
IPC: G10L19/00 , G10L19/032 , G10L19/002 , G10L19/02 , G10L19/028
CPC classification number: G10L19/032 , G10L19/002 , G10L19/0204 , G10L19/028
Abstract: An audio signal encoding method is provided. The method includes: dividing a frequency band of an audio signal into a plurality of sub-bands, and quantifying a sub-band normalization factor of each sub-band; determining signal bandwidth of bit allocation according to the quantified sub-band normalization factor, or according to the quantified sub-band normalization factor and bit rate information; allocating bits for a sub-band within the determined signal bandwidth; and coding a spectrum coefficient of the audio signal according to the bits allocated for each sub-band. According to embodiments of the present invention, during coding and decoding, signal bandwidth of bit allocation is determined according to the quantified sub-band normalization factor and bit rate information. In this manner, the determined signal bandwidth is effectively coded and decoded by centralizing the bits, and audio quality is improved.
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公开(公告)号：US20180137870A1
公开(公告)日：2018-05-17
申请号：US15854130
申请日：2017-12-26
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Fuwei Ma , Dejun Zhang , Lei Miao , Fengyan Qi
IPC: G10L19/038 , G10L19/12 , G10L19/107 , G10L19/00
CPC classification number: G10L19/038 , G01L19/12 , G10L19/04 , G10L19/107 , G10L19/12 , G10L21/00 , G10L2019/0005
Abstract: A vector joint encoding/decoding method and a vector joint encoder/decoder are provided, more than two vectors are jointly encoded, and an encoding index of at least one vector is split and then combined between different vectors, so that encoding idle spaces of different vectors can be recombined, thereby facilitating saving of encoding bits, and because an encoding index of a vector is split and then shorter split indexes are recombined, thereby facilitating reduction of requirements for the bit width of operating parts in encoding/decoding calculation.
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公开(公告)号：US09899033B2
公开(公告)日：2018-02-20
申请号：US15684079
申请日：2017-08-23
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
CPC classification number: G10L19/167 , G10L19/002 , G10L19/0204 , G10L19/06 , G10L19/26 , H04L5/06 , H04L27/2602
Abstract: In a signal coding method, bits for coding allocated to different bands of a frequency domain signal obtained from an input signal are adjusted to improve the coding quality. The total available bits for coding are first allocated to the bands of the frequency domain signal according to a predetermined allocation rule. The numbers of bits allocated to the respective bands of the frequency domain signal are then adjusted when a highest frequency of the frequency domain signal to which bits are allocated is greater than a predetermined value. The frequency domain signal is coded according to the adjusted bit allocation for the bands of the frequency domain signal.
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