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31. 发明公开

EP2669890A1 VECTOR JOINT ENCODING/DECODING METHOD AND CODEC 有权
标题翻译：方法和编码器，用于语音信号的COMMON矢量编码
公开(公告)号：EP2669890A1
公开(公告)日：2013-12-04
申请号：EP11856688.4
申请日：2011-11-30
申请人： Huawei Technologies Co., Ltd.
发明人： MA, Fuwei , ZHANG, Dejun , MIAO, Lei , QI, Fengyan
IPC分类号： G10L19/00
CPC分类号： G10L19/038 , G01L19/12 , G10L19/04 , G10L19/107 , G10L19/12 , G10L21/00 , G10L2019/0005
摘要： 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.

32. 发明公开

EP2662854A1 METHOD AND DEVICE FOR DETECTING FUNDAMENTAL TONE 审中-公开
标题翻译： VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG VONGRUNDTÖNEN
公开(公告)号：EP2662854A1
公开(公告)日：2013-11-13
申请号：EP12802425.4
申请日：2012-06-25
申请人： Huawei Technologies Co., Ltd
发明人： QI, Fengyan , MIAO, Lei , TALEB, Anisse
IPC分类号： G10L11/04
CPC分类号： G10L19/02 , G10L25/90
摘要： The present invention discloses a pitch detection method and apparatus, which belong to the field of speech and audio. The pitch detection method includes: performing pitch detection on a speech signal in a time domain to obtain an initial pitch period; converting the speech signal to a frequency domain to obtain a frequency spectrum of the speech signal, where the frequency spectrum includes a magnitude spectrum of the frequency spectrum; extracting a feature parameter according to the initial pitch period and the frequency spectrum of the speech signal; and performing fine pitch period detection according to the initial pitch period and the feature parameter to obtain a fine pitch period.
摘要翻译：本发明公开了一种属于语音领域的音调检测方法和装置。音调检测方法包括：对时域中的语音信号执行音调检测以获得初始音调周期; 将语音信号转换为频域以获得语音信号的频谱，其中频谱包括频谱的幅度谱; 根据初始音调周期和语音信号的频谱提取特征参数; 并且根据初始音调周期和特征参数执行精细音调周期检测以获得精细音调周期。

33. 发明公开

EP2613315A1 METHOD AND DEVICE FOR CODING/DECODING AUDIO SIGNALS 有权
标题翻译： VERFAHREN UND VORRICHTUNG ZUR KODIERUNG EINES TONSIGNALS
公开(公告)号：EP2613315A1
公开(公告)日：2013-07-10
申请号：EP12731282.5
申请日：2012-03-22
申请人： Huawei Technologies Co., Ltd.
发明人： QI, Fengyan , LIU, Zexin , MIAO, Lei
IPC分类号： G10L19/00 , G10L19/02
CPC分类号： G10L19/032 , G10L19/002 , G10L19/0204 , G10L19/028
摘要： Embodiments of the present invention provide an audio signal coding and decoding method and device. The coding 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.
摘要翻译：本发明的实施例提供一种音频信号编码和解码方法和装置。编码方法包括：将音频信号的频带划分成多个子带，并对每个子带的子带归一化因子进行量化; 根据量化的子带归一化因子，或根据量化的子带归一化因子和比特率信息确定比特分配的信号带宽; 在所确定的信号带宽内为子带分配比特; 以及根据为每个子带分配的比特来对音频信号的频谱系数进行编码。根据本发明的实施例，在编码和解码期间，根据量化的子带归一化因子和比特率信息来确定比特分配的信号带宽。以这种方式，通过集中位来有效地对所确定的信号带宽进行编码和解码，提高音频质量。

34. 发明公开

EP2439737A1 COMPRESSION CODING AND DECODING METHOD, CODER, DECODER AND CODING DEVICE 有权
标题翻译：科罗拉多州立大学
公开(公告)号：EP2439737A1
公开(公告)日：2012-04-11
申请号：EP10782961.6
申请日：2010-05-31
申请人： Huawei Technologies Co., Ltd.
发明人： QI, Fengyan , MIAO, Lei , ZHANG, Qing
IPC分类号： G10L19/04 , H03M7/30
CPC分类号： G10L19/09 , H03M7/40
摘要： The embodiments of the present invention relate to a compression coding and decoding method, a coder, a decoder and a coding device. The compression coding method includes: extracting sign information of an input signal to obtain an absolute value signal of the input signal; obtaining a residual signal of the absolute value signal by using a prediction coefficient, where the prediction coefficient is obtained by prediction and analysis that are performed according to a signal characteristic of the absolute value signal of the input signal; and multiplexing the residual signal, the sign information and a coding parameter to output a coding code stream, after the residual signal, the sign information and the coding parameter are respectively coded, so as to improve compression efficiency of a voice and audio signal.
摘要翻译：本发明的实施例涉及压缩编码和解码方法，编码器，解码器和编码装置。压缩编码方法包括：提取输入信号的符号信息以获得输入信号的绝对值信号; 通过使用预测系数获得绝对值信号的残差信号，其中通过根据输入信号的绝对值信号的信号特性执行的预测和分析获得预测系数; 在剩余信号，符号信息和编码参数分别编码之后，复用残留信号，符号信息和编码参数以输出编码码流，以提高语音和音频信号的压缩效率。

35. 发明公开

EP2352146A1 METHOD AND DEVICE FOR OBTAINING PITCH GAIN, ENCODER AND DECODER 审中-公开
标题翻译： VERFAHREN UND VORRICHTUNG ZUR GEWINNUNG VON PITCH-GAINS SOWIE KODIER- UNDDEKODIERGERÄT
公开(公告)号：EP2352146A1
公开(公告)日：2011-08-03
申请号：EP09836071.2
申请日：2009-12-30
申请人： Huawei Technologies Co., Ltd.
发明人： ZHANG, Dejun , MIAO, Lei , XU, Jianfeng , QI, Fengyan , ZHANG, Qing , LI, Lixiong , MA, Fuwei
IPC分类号： G10L19/04
CPC分类号： G10L19/08 , G10L2019/0011
摘要： The present invention relates to a method and apparatus for obtaining a pitch gain, and a coder and a decoder. The method includes: obtaining information about an input signal; and obtaining a pitch gain corresponding to the information about the input signal according to the correspondence between the signal information and the pitch gain. The embodiments of the present invention obtain the corresponding pitch gain according to the signal information by using the obtained correspondence between the signal information and the pitch gain, and the pitch gain is applicable to the coder and the decoder, thus making it unnecessary for the coder to transmit the pitch gain to the decoder and solving the problem of bit overhead. The embodiments of the present invention determine the pitch gain adaptively according to the signal information, avoid consumption of extra bits for quantizing the pitch gain, avoid impact on the coding performance, and improve the compression ratio.
摘要翻译：本发明涉及一种获得音调增益的方法和装置，以及编码器和解码器。该方法包括：获取关于输入信号的信息; 并且根据信号信息和音调增益之间的对应关系，获得与输入信号有关的信息相应的音调增益。本发明的实施例通过使用所获得的信号信息和音调增益之间的对应关系，根据信号信息获得相应的音调增益，音调增益适用于编码器和解码器，从而不需要编码器将音调增益发送到解码器并解决位开销的问题。本发明的实施例根据信号信息自适应地确定音调增益，避免消耗用于量化音调增益的额外比特，避免对编码性能的影响，并提高压缩比。

36. 发明公开

EP3951776A1 DEVICE FOR DECODING SIGNAL 有权
公开(公告)号：EP3951776A1
公开(公告)日：2022-02-09
申请号：EP21176397.4
申请日：2013-07-25
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Zexin , QI, Fengyan , MIAO, Lei
IPC分类号： G10L19/02 , G10L19/028 , H03M7/30
摘要： Embodiments of the present invention provide a method and device for decoding a signal. The method for decoding a signal includes: obtaining spectral coefficients of sub-bands from a received bitstream by means of decoding; classifying sub-bands in which the spectral coefficients are located into a sub-band with saturated bit allocation and a sub-band with unsaturated bit allocation; performing noise filling on a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation, so as to reconstruct the spectral coefficient that has not been obtained by means of decoding; and obtaining a frequency domain signal according to the spectral coefficients obtained by means of decoding and the reconstructed spectral coefficient. In the foregoing embodiments of the present invention, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, and a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation may be reconstructed, thereby improving signal decoding quality.

37. 发明公开

EP3779980A3 METHOD FOR PREDICTING HIGH FREQUENCY BAND SIGNAL, ENCODING DEVICE, AND DECODING DEVICE 审中-公开
公开(公告)号：EP3779980A3
公开(公告)日：2021-07-07
申请号：EP20179865.9
申请日：2013-05-29
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Zexin , MIAO, Lei , QI, Fengyan
IPC分类号： G10L19/04 , G10L21/02 , G10L19/20 , G10L21/038
摘要： Embodiments of the present invention provide a method for predicting a high frequency band signal, an encoding device, and a decoding device. The method includes: acquiring a signal type of an audio signal and a low frequency band signal of the audio signal, where the audio signal includes the low frequency band signal and a high frequency band signal; acquiring a frequency envelope of the high frequency band signal according to the signal type; predicting an excitation signal of the high frequency band signal according to the low frequency band signal; and restoring the high frequency band signal according to the frequency envelope of the high frequency band signal and the excitation signal of the high frequency band signal. By using the technical solutions of the embodiments of the present invention, an error existing between a high frequency band signal obtained by prediction and an actual high frequency band signal can be effectively reduced, and an accuracy rate of the predicted high frequency band signal can be increased.

38. 发明公开

EP3779980A2 METHOD FOR PREDICTING HIGH FREQUENCY BAND SIGNAL, ENCODING DEVICE, AND DECODING DEVICE 审中-公开
公开(公告)号：EP3779980A2
公开(公告)日：2021-02-17
申请号：EP20179865.9
申请日：2013-05-29
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Zexin , MIAO, Lei , QI, Fengyan
IPC分类号： G10L19/04 , G10L21/02 , G10L19/20 , G10L21/038
摘要： Embodiments of the present invention provide a method for predicting a high frequency band signal, an encoding device, and a decoding device. The method includes: acquiring a signal type of an audio signal and a low frequency band signal of the audio signal, where the audio signal includes the low frequency band signal and a high frequency band signal; acquiring a frequency envelope of the high frequency band signal according to the signal type; predicting an excitation signal of the high frequency band signal according to the low frequency band signal; and restoring the high frequency band signal according to the frequency envelope of the high frequency band signal and the excitation signal of the high frequency band signal. By using the technical solutions of the embodiments of the present invention, an error existing between a high frequency band signal obtained by prediction and an actual high frequency band signal can be effectively reduced, and an accuracy rate of the predicted high frequency band signal can be increased.

39. 发明授权

EP2940685B1 PREDICTION METHOD AND DECODING DEVICE FOR BANDWIDTH EXPANSION BAND SIGNAL 有权转让
公开(公告)号：EP2940685B1
公开(公告)日：2020-06-24
申请号：EP13873587.3
申请日：2013-07-23
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Zexin , MIAO, Lei , QI, Fengyan
IPC分类号： G10L19/02 , G10L21/038 , G10L19/08

40. 发明公开

EP3444817A1 METHOD AND DEVICE FOR DECODING SIGNAL 有权
公开(公告)号：EP3444817A1
公开(公告)日：2019-02-20
申请号：EP18170973.4
申请日：2013-07-25
申请人： Huawei Technologies Co., Ltd.
发明人： LIU, Zexin , QI, Fengyan , MIAO, Lei
IPC分类号： G10L19/028 , H03M7/30
摘要： Embodiments of the present invention provide a method and device for decoding a signal. The method for decoding a signal includes: obtaining spectral coefficients of sub-bands from a received bitstream by means of decoding; classifying sub-bands in which the spectral coefficients are located into a sub-band with saturated bit allocation and a sub-band with unsaturated bit allocation; performing noise filling on a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation, so as to reconstruct the spectral coefficient that has not been obtained by means of decoding; and obtaining a frequency domain signal according to the spectral coefficients obtained by means of decoding and the reconstructed spectral coefficient. In the foregoing embodiments of the present invention, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, and a spectral coefficient that has not been obtained by means of decoding and is in the sub-band with unsaturated bit allocation may be reconstructed, thereby improving signal decoding quality.

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