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1. 发明申请

WO2012048472A1 SIGNAL ANALYZER, SIGNAL ANALYZING METHOD, SIGNAL SYNTHESIZER, SIGNAL SYNTHESIZING METHOD, WINDOWER, TRANSFORMER AND INVERSE TRANSFORMER 审中-公开
标题翻译：信号分析仪，信号分析方法，信号合成器，信号合成方法，风机，变压器和逆变器
公开(公告)号：WO2012048472A1
公开(公告)日：2012-04-19
申请号：PCT/CN2010/077794
申请日：2010-10-15
申请人： HUAWEI TECHNOLOGIES CO., LTD. , TALEB, Anisse , QI, Fengyan , HU, Chen
发明人： TALEB, Anisse , QI, Fengyan , HU, Chen
IPC分类号： G10L19/02
CPC分类号： G10L19/022 , G10L19/0212 , G10L19/20
摘要： The invention relates to a signal analyzer (401 ) for processing an overlapped input signal frame (103, 105) comprising 2N subsequent input signal values. The signal analyzer (401 ) comprises: a windower adapted to window (101 ) 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 (403) adapted to transform the remaining 3 N /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.
摘要翻译：本发明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（103,105）的信号分析器（401）。信号分析器（401）包括：适用于对叠加的输入信号帧进行窗口（101）以获得加窗信号的加窗器，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1且小于N / 2; 以及变换器（403），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后续加窗信号值，以获得包括N-M个变换域信号值的变换域信号。

2. 发明申请

WO2013096900A1 VERY SHORT PITCH DETECTION AND CODING 审中-公开
标题翻译：非常短暂的检测和编码
公开(公告)号：WO2013096900A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/071475
申请日：2012-12-21
申请人： HUAWEI TECHNOLOGIES CO., LTD. , GAO, Yang , QI, Fengyan
发明人： GAO, Yang , QI, Fengyan
IPC分类号： G10L13/00
CPC分类号： G10L21/003 , G10L19/00 , G10L19/09 , G10L25/06 , G10L25/21 , G10L25/90
摘要： System and method embodiments are provided for very short pitch detection and coding for speech or audio signals. The system and method include detecting whether there is a very short pitch lag in a speech or audio signal that is shorter than a conventional minimum pitch limitation using a combination of time domain and frequency domain pitch detection techniques. The pitch detection techniques include using pitch correlations in time domain and detecting a lack of low frequency energy in the speech or audio signal in frequency domain. The detected very short pitch lag is coded using a pitch range from a predetermined minimum very short pitch limitation that is smaller than the conventional minimum pitch limitation.
摘要翻译：提供了用于语音或音频信号的非常短的音调检测和编码的系统和方法实施例。该系统和方法包括使用时域和频域音调检测技术的组合来检测语音或音频信号中是否存在比常规最小音调限制短的音调滞后。音调检测技术包括在时域中使用音调相关性，并检测频域中的语音或音频信号中缺少低频能量。检测到的非常短的音调滞后使用小于传统的最小间距限制的预定的最小非常短的间距限制的音调范围进行编码。

3. 发明公开

EP4231296A3 VERY SHORT PITCH DETECTION AND CODING 审中-实审
公开(公告)号：EP4231296A3
公开(公告)日：2023-09-27
申请号：EP23168837.5
申请日：2012-12-21
申请人： Huawei Technologies Co., Ltd.
发明人： GAO, Yang , QI, Fengyan
IPC分类号： G10L25/90 , G10L25/21 , G10L25/06 , G10L19/09
摘要： System and method embodiments are provided for very short pitch detection and coding for speech or audio signals. The system and method include detecting whether there is a very short pitch lag in a speech or audio signal that is shorter than a conventional minimum pitch limitation using a combination of time domain and frequency domain pitch detection techniques. The pitch detection techniques include using pitch correlations in time domain and detecting a lack of low frequency energy in the speech or audio signal in frequency domain. The detected very short pitch lag is coded using a pitch range from a predetermined minimum very short pitch limitation that is smaller than the conventional minimum pitch limitation.

4. 发明授权

EP2892052B1 BIT ALLOCATION METHOD AND DEVICE FOR AUDIO SIGNAL 有权
标题翻译：音频信号的比特分配和设备
公开(公告)号：EP2892052B1
公开(公告)日：2016-07-27
申请号：EP13849179.0
申请日：2013-05-29
申请人： Huawei Technologies Co., Ltd.
发明人： QI, Fengyan , LIU, Zexin , MIAO, Lei
IPC分类号： G10L19/035
CPC分类号： G10L19/002 , G10L19/0204 , G10L19/032 , G10L19/035
摘要： Embodiments of the present invention provide a method and an apparatus for allocating bits of an audio signal. The method includes: dividing a frequency band of an audio signal into multiple sub-bands, and quantizing a sub-band normalization factor of each sub-band; classifying the multiple sub-bands into multiple groups, and acquiring a sum of intra-group sub-band normalization factors of each group, where the sum of intra-group sub-band normalization factors is a sum of sub-band normalization factors of all sub-bands in the group; performing initial inter-group bit allocation according to the sum of intra-group sub-band normalization factors of each group, to determine the initial number of bits of each group; performing secondary inter-group bit allocation based on the initial number of bits of each group, to allocate coding bits of the audio signal to at least one group, where a sum of bits allocated to the at least one group is the number of the coding bits of the audio signal; and allocating the bits of the audio signal that are allocated to the group to sub-bands in the group. The present invention can, by means of grouping, ensure relatively stable allocation in a previous frame and a next frame and reduce an impact of global allocation on local discontinuity in a case of low and medium bit rates.

5. 发明公开

EP4231296A2 VERY SHORT PITCH DETECTION AND CODING 审中-实审
公开(公告)号：EP4231296A2
公开(公告)日：2023-08-23
申请号：EP23168837.5
申请日：2012-12-21
申请人： Huawei Technologies Co., Ltd.
发明人： GAO, Yang , QI, Fengyan
IPC分类号： G10L25/90 , G10L25/21 , G10L25/06 , G10L19/09
摘要： System and method embodiments are provided for very short pitch detection and coding for speech or audio signals. The system and method include detecting whether there is a very short pitch lag in a speech or audio signal that is shorter than a conventional minimum pitch limitation using a combination of time domain and frequency domain pitch detection techniques. The pitch detection techniques include using pitch correlations in time domain and detecting a lack of low frequency energy in the speech or audio signal in frequency domain. The detected very short pitch lag is coded using a pitch range from a predetermined minimum very short pitch limitation that is smaller than the conventional minimum pitch limitation.

6. 发明授权

EP2919231B1 SIGNAL DECODING METHOD AND DEVICE 有权
公开(公告)号：EP2919231B1
公开(公告)日：2018-09-12
申请号：EP13859818.0
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
CPC分类号： G10L19/002 , G10L19/0204 , G10L19/028
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 restore 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 restored 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 restored, thereby improving signal decoding quality.

7. 发明授权

EP2669890B1 METHOD AND ENCODER FOR VECTOR JOINT ENCODING OF A SPEECH SIGNAL 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：EP2669890B1
公开(公告)日：2016-06-08
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 , G10L19/038 , G10L19/107
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.

8. 发明公开

EP2937861A1 PREDICTION METHOD AND CODING/DECODING DEVICE FOR HIGH FREQUENCY BAND SIGNAL 有权
标题翻译：预测方法和编码/解码装置于高频带信号
公开(公告)号：EP2937861A1
公开(公告)日：2015-10-28
申请号：EP13873224.3
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： G10L21/02 , G10L19/04
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.

9. 发明公开

EP2843659A1 METHOD AND APPARATUS FOR DETECTING CORRECTNESS OF PITCH PERIOD 有权
标题翻译： VERFAHREN UND VORRICHTUNG ZUR ERKENNUNG DER KORREKTHEIT DES NEIGUNGSZEITRAUMS
公开(公告)号：EP2843659A1
公开(公告)日：2015-03-04
申请号：EP12876916.3
申请日：2012-12-26
申请人： Huawei Technologies Co., Ltd
发明人： QI, Fengyan , MIAO, Lei
IPC分类号： G10L21/02
CPC分类号： G10L21/013 , G10L19/00 , G10L21/028 , G10L25/00 , G10L25/90
摘要： Embodiments of the present invention provide a method and an apparatus for detecting correctness of a pitch period. 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. The method and apparatus for detecting correctness of a pitch period according to the embodiments of the present invention can improve, based on a relatively less complex algorithm, accuracy of detecting correctness of a pitch period.
摘要翻译：本发明的实施例提供一种用于检测音调周期的正确性的方法和装置。用于检测音调周期的正确性的方法包括：根据时域中的输入信号的初始音调周期确定输入信号的音调频率bin，其中通过执行开环检测获得初始音调周期对输入信号; 基于频域中的输入信号的幅度谱确定与输入信号的音调频率仓相关联的音调周期正确性判定参数; 以及根据音调周期正确性判定参数确定初始音调周期的正确性。根据本发明的实施例的用于检测音调周期的正确性的方法和装置可以基于相对较不复杂的算法来改进检测音调周期的正确性的精度。

10. 发明公开

EP2619758A1 SIGNAL ANALYZER, SIGNAL ANALYZING METHOD, SIGNAL SYNTHESIZER, SIGNAL SYNTHESIZING METHOD, WINDOWER, TRANSFORMER AND INVERSE TRANSFORMER 有权
标题翻译：用于转化和音频信号的逆变换，对音频信号的分析和合成方法的装置
公开(公告)号：EP2619758A1
公开(公告)日：2013-07-31
申请号：EP10858304.8
申请日：2010-10-15
申请人： Huawei Technologies Co., Ltd.
发明人： TALEB, Anisse , QI, Fengyan , HU, Chen
IPC分类号： G10L19/02
CPC分类号： G10L19/022 , G10L19/0212 , G10L19/20
摘要： 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.

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