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公开(公告)号：US20150334501A1
公开(公告)日：2015-11-19
申请号：US14811438
申请日：2015-07-28
Applicant: Huawei Technologies Co., Ltd.
CPC classification number: H04S3/00 , G10L19/00 , G10L19/008
Abstract: A method and an apparatus for generating a sideband residual signal. The method includes comparing energy of a first signal input by a first sound channel with energy of a second signal input by a second sound channel, if the energy of the first signal is greater than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the first signal, and if the energy of the first signal is smaller than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the second signal. By using the method and apparatus provided in the embodiments of the present invention, it can be avoided that a monophonic quantization error has a greater impact on a signal whose energy is smaller.
Abstract translation: 一种用于产生边带残留信号的方法和装置。 该方法包括：如果第一信号的能量大于第二信号的能量，则将由第一声道输入的第一信号的能量与由第二声道输入的第二信号的能量进行比较，产生边带残留信号 通过对第一信号分配单声道量化误差，并且如果第一信号的能量小于第二信号的能量，则通过向第二信号分配单声道量化误差来产生边带残留信号。 通过使用本发明实施例中提供的方法和装置，可以避免单声道量化误差对能量较小的信号的影响较大。
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公开(公告)号：US09123329B2
公开(公告)日：2015-09-01
申请号：US13708611
申请日：2012-12-07
Applicant: Huawei Technologies Co., Ltd.
IPC: H04R5/00 , G10L19/008
CPC classification number: H04S3/00 , G10L19/00 , G10L19/008
Abstract: Embodiments of the present invention provide a method and an apparatus for generating a sideband residual signal. The method includes: comparing energy of a first signal input by a first sound channel with energy of a second signal input by a second sound channel; if the energy of the first signal is greater than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the first signal; and if the energy of the first signal is smaller than the energy of the second signal, generating a sideband residual signal by allocating a monophonic quantization error to the second signal. By using the method and apparatus provided in the embodiments of the present invention, it can be avoided that a monophonic quantization error has a greater impact on a signal whose energy is smaller.
Abstract translation: 本发明的实施例提供一种用于生成边带残留信号的方法和装置。 该方法包括：将通过第一声道输入的第一信号的能量与由第二声道输入的第二信号的能量进行比较; 如果第一信号的能量大于第二信号的能量，则通过向第一信号分配单声道量化误差来产生边带残差信号; 并且如果第一信号的能量小于第二信号的能量，则通过向第二信号分配单声道量化误差来产生边带残留信号。 通过使用本发明实施例中提供的方法和装置，可以避免单声道量化误差对能量较小的信号的影响较大。
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公开(公告)号：US20150095038A1
公开(公告)日：2015-04-02
申请号：US14562494
申请日：2014-12-05
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/26
CPC classification number: G10L19/265 , G10L19/012 , G10L19/18 , G10L19/22
Abstract: The present disclosure provides a speech/audio signal processing method based on wideband switching and a coding apparatus. The method includes: if a first wideband speech/audio signal is a harmonic signal, adjusting a determining condition for determining that a second wideband speech/audio signal is a harmonic signal, to obtain a first determining condition, where the first wideband speech/audio signal is a signal before wideband switching, and the second wideband speech/audio signal is a signal after the wideband switching; and determining, according to the first determining condition, whether the second wideband speech/audio signal is a harmonic signal. In the case of wideband switching, signal types of speech/audio signals remain as consistent as possible before and after the switching, so that continuity of the speech/audio signal decoded by a decoder device is ensured as much as possible, further improving speech communication service quality.
Abstract translation: 本公开提供了一种基于宽带交换和编码装置的语音/音频信号处理方法。 该方法包括：如果第一宽带语音/音频信号是谐波信号，则调整用于确定第二宽带语音/音频信号是谐波信号的确定条件，以获得第一确定条件，其中第一宽带语音/音频 信号是宽带切换前的信号，第二宽带语音/音频信号是宽带切换后的信号; 以及根据所述第一确定条件确定所述第二宽带语音/音频信号是否是谐波信号。 在宽带切换的情况下，语音/音频信号的信号类型在切换之前和之后保持一致，从而尽可能地确保由解码器设备解码的语音/音频信号的连续性，进一步改善语音通信 服务质量。
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公开(公告)号：US20130124216A1
公开(公告)日：2013-05-16
申请号：US13738786
申请日：2013-01-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chen Hu , Zexin Liu , Lei Miao , Longyin Chen , Qing Zhang , Wei Xiao , Marcel Taddei Herve
IPC: G10L21/00
Abstract: A method, device, and system for signal encoding and decoding are disclosed. The method includes: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. According to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.
Abstract translation: 公开了用于信号编码和解码的方法，装置和系统。 该方法包括：编码核心层信号以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流，其中比特流包括核心层信号码和增强层信号码。 根据增强层可以使用的比特数，选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时，可以提高核心层的增强质量。
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公开(公告)号：US10789964B2
公开(公告)日：2020-09-29
申请号：US16167281
申请日：2018-10-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L19/02 , G10L19/002 , G10L19/032
Abstract: Embodiments of the present disclosure provide signal encoding and decoding methods and devices. The method includes: determining, a quantity k of subbands to be encoded, where i is a positive number, and k is a positive integer; selecting, according to quantized envelopes of all subbands, k subbands from all the subbands, or selecting k subbands from all subbands according to a psychoacoustic model; and performing a first-time encoding operation on spectral coefficients of the k subbands. In some embodiments of the present disclosure, the quantity k of subbands to be encoded is determined according to the quantity of available bits and the first saturation threshold, and encoding is performed on the k subbands that are selected from all the subbands, instead of on an entire frequency band.
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Patent Agency Ranking
公开(公告)号：US09805732B2
公开(公告)日：2017-10-31
申请号：US14981923
申请日：2015-12-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L21/00 , G10L19/038 , G10L19/06 , G10L19/00
CPC classification number: G10L19/038 , G10L19/06 , G10L2019/0005
Abstract: Embodiments of the present application proposes a frequency envelope vector quantization method and apparatus, where the method includes: dividing N frequency envelopes in one frame into N1 vectors; quantizing a first vector in the N1 vectors by using a first codebook, to obtain a code word corresponding to the quantized first vector, where the first codebook is divided into 2B1 portions; determining, according to the code word corresponding to the quantized first vector; determining a second codebook according to the codebook of the ith portion; and quantizing a second vector in the N1 vectors based on the second codebook. In the embodiments of the present application, vector quantization can be performed on frequency envelope vectors by using a codebook with a smaller quantity of bits. Therefore, complexity of vector quantization can be reduced, and an effect of vector quantization can also be ensured.
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公开(公告)号：US10152981B2
公开(公告)日：2018-12-11
申请号：US14984703
申请日：2015-12-30
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: G10L19/02 , G10L19/002 , G10L19/032
Abstract: Embodiments of the present disclosure provide signal encoding and decoding methods and devices. The method includes: determining, a quantity k of subbands to be encoded, where i is a positive number, and k is a positive integer; selecting, according to quantized envelopes of all subbands, k subbands from all the subbands, or selecting k subbands from all subbands according to a psychoacoustic model; and performing a first-time encoding operation on spectral coefficients of the k subbands. In the embodiments of the present disclosure, the quantity k of subbands to be encoded is determined according to the quantity of available bits and the first saturation threshold, and encoding is performed on the k subbands that are selected from all the subbands, instead of on an entire frequency band, which can reduce spectrum holes of a signal obtained through decoding, and therefore, can improve auditory quality of an output signal.
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公开(公告)号：US10056090B2
公开(公告)日：2018-08-21
申请号：US14562494
申请日：2014-12-05
Applicant: Huawei Technologies Co., Ltd.
IPC: G10L19/26 , G10L19/18 , G10L19/22 , G10L19/012
CPC classification number: G10L19/265 , G10L19/012 , G10L19/18 , G10L19/22
Abstract: The present disclosure provides a speech/audio signal processing method based on wideband switching and a coding apparatus. The method includes: if a first wideband speech/audio signal is a harmonic signal, adjusting a determining condition for determining that a second wideband speech/audio signal is a harmonic signal, to obtain a first determining condition, where the first wideband speech/audio signal is a signal before wideband switching, and the second wideband speech/audio signal is a signal after the wideband switching; and determining, according to the first determining condition, whether the second wideband speech/audio signal is a harmonic signal. In the case of wideband switching, signal types of speech/audio signals remain as consistent as possible before and after the switching, so that continuity of the speech/audio signal decoded by a decoder device is ensured as much as possible, further improving speech communication service quality.
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公开(公告)号：US20180018980A1
公开(公告)日：2018-01-18
申请号：US15715179
申请日：2017-09-26
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
IPC: G10L19/038 , G10L19/06 , G10L19/00
CPC classification number: G10L19/038 , G10L19/06 , G10L2019/0005
Abstract: Embodiments of the present application proposes a frequency envelope vector quantization method and apparatus, where the method includes: dividing N frequency envelopes in one frame into N1 vectors; quantizing a first vector in the N1 vectors by using a first codebook, to obtain a code word corresponding to the quantized first vector, where the first codebook is divided into 2B1 portions; determining, according to the code word corresponding to the quantized first vector; determining a second codebook according to the codebook of the ith portion; and quantizing a second vector in the N1 vectors based on the second codebook. In the embodiments of the present application, vector quantization can be performed on frequency envelope vectors by using a codebook with a smaller quantity of bits. Therefore, complexity of vector quantization can be reduced, and an effect of vector quantization can also be ensured.
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10.发明申请SIGNAL ANALYZER, SIGNAL ANALYZING METHOD, SIGNAL SYNTHESIZER, SIGNAL SYNTHESIZING, WINDOWER, TRANSFORMER AND INVERSE TRANSFORMER 有权信号分析仪，信号分析方法，信号合成器，信号合成，风机，变压器和逆变器公开(公告)号：US20130268264A1
公开(公告)日：2013-10-10
申请号：US13862655
申请日：2013-04-15
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Anisse Taleb , Fengyan Qi , Chen Hu
IPC: G10L19/022
CPC classification number: G10L19/022 , G10L19/0212 , G10L19/20
Abstract: The present disclosure relates to a signal analyzer for processing an overlapped input signal frame comprising 2N subsequent input signal values. The signal analyzer comprises: a windower adapted to window the overlapped input signal frame to obtain a windowed signal, wherein the windower is adapted to zero M+N/2 subsequent input signal values of the overlapped input signal frame, wherein M is equal or greater than 1 and smaller than N/2; and a transformer adapted to transform the remaining 3N/2−M subsequent windowed signal values of the windowed signal using N−M sets of transform parameters to obtain a transformed-domain signal comprising N−M transformed-domain signal values.
Abstract translation: 本公开涉及一种用于处理包括2N个后续输入信号值的重叠输入信号帧的信号分析器。 所述信号分析器包括：风力发电机，其适于窗口重叠的输入信号帧以获得加窗信号，其中，所述加窗器适用于重叠输入信号帧的M + N / 2个后续输入信号值，其中M等于或大于 小于1，小于N / 2; 以及变压器，其适于使用N-M组变换参数来变换所述加窗信号的剩余3N / 2-M后续窗口化信号值，以获得包括N-M个变换域信号值的变换域信号。
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