专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US11610592B2 Method and device for decoding signal 有权
公开(公告)号：US11610592B2
公开(公告)日：2023-03-21
申请号：US17204073
申请日：2021-03-17
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Zexin Liu , Fengyan Qi , Lei Miao
IPC分类号： G10L19/002 , G10L19/028 , G10L19/02 , G10L19/005
摘要： An audio signal decoding device includes a non-transitory memory storage stores audio data in a form of a bitstream; and an audio decoder, by which a first spectral coefficient of a first sub-band of a current frame of an audio signal by decoding the bitstream is obtained; a first average quantity of allocated bits per spectral coefficient of the first sub-band is obtained; a first noise filling gain for the first sub-band is obtained when the first average quantity is less than a threshold; a second spectral coefficient is reconstructed according to the first noise filling gain; a frequency domain audio signal is obtained according to the first spectral coefficient and the second spectral coefficient; and a time domain audio signal is generated according to the frequency domain signal.

2. 发明申请

US20180261234A1 AUDIO SIGNAL CODING AND DECODING METHOD AND DEVICE 审中-公开
公开(公告)号：US20180261234A1
公开(公告)日：2018-09-13
申请号：US15981645
申请日：2018-05-16
申请人： HUAWEI TECHNOLOGIES CO.,LTD.
发明人： Fengyan Qi , Zexin Liu , Lei Miao
IPC分类号： G10L19/032 , G10L19/002 , G10L19/028 , G10L19/02
摘要： 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.

3. 发明授权

US09984697B2 Audio signal coding and decoding method and device 有权
公开(公告)号：US09984697B2
公开(公告)日：2018-05-29
申请号：US14789755
申请日：2015-07-01
申请人： Huawei Technologies Co., Ltd.
发明人： Fengyan Qi , Zexin Liu , Lei Miao
IPC分类号： G10L19/00 , G10L19/032 , G10L19/002 , G10L19/02 , G10L19/028
CPC分类号： G10L19/032 , G10L19/002 , G10L19/0204 , G10L19/028
摘要： 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.

4. 发明申请

US20180137870A1 Vector Joint Encoding/Decoding Method and Vector Joint Encoder/Decoder 审中-公开
公开(公告)号：US20180137870A1
公开(公告)日：2018-05-17
申请号：US15854130
申请日：2017-12-26
申请人： HUAWEI TECHNOLOGIES CO.,LTD.
发明人： Fuwei Ma , Dejun Zhang , Lei Miao , Fengyan Qi
IPC分类号： G10L19/038 , G10L19/12 , G10L19/107 , 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.

5. 发明授权

US09899033B2 Signal coding and decoding methods and devices 有权
公开(公告)号：US09899033B2
公开(公告)日：2018-02-20
申请号：US15684079
申请日：2017-08-23
申请人： Huawei Technologies Co., Ltd.
发明人： Zexin Liu , Lei Miao , Fengyan Qi
IPC分类号： H04L27/26 , G10L21/00 , G10L19/16 , G10L19/06 , H04L5/06 , G10L19/02 , G10L19/002 , G10L19/26
CPC分类号： G10L19/167 , G10L19/002 , G10L19/0204 , G10L19/06 , G10L19/26 , H04L5/06 , H04L27/2602
摘要： 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.

6. 发明授权

US09626972B2 Method and device for decoding signal 有权
公开(公告)号：US09626972B2
公开(公告)日：2017-04-18
申请号：US14730524
申请日：2015-06-04
申请人： Huawei Technologies Co., Ltd.
发明人： Zexin Liu , Fengyan Qi , Lei Miao
IPC分类号： G10L19/002 , G10L19/02 , G10L19/028
CPC分类号： G10L19/002 , G10L19/0204 , G10L19/028
摘要： 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. Therefore, a sub-band with unsaturated bit allocation in a frequency domain signal may be obtained by classification, thereby improving signal decoding quality.

7. 发明授权

US09404826B2 Vector joint encoding/decoding method and vector joint encoder/decoder 有权
公开(公告)号：US09404826B2
公开(公告)日：2016-08-02
申请号：US14547677
申请日：2014-11-19
申请人： Huawei Technologies Co., Ltd.
发明人： Fuwei Ma , Dejun Zhang , Lei Miao , Fengyan Qi
IPC分类号： G10L19/00 , G10L21/00 , G10L13/00 , G01L19/12 , G10L19/038 , G10L19/107 , G10L19/04
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. 发明申请

US20150073781A1 Method and Apparatus for Detecting Correctness of Pitch Period 有权
标题翻译：用于检测音调周期正确性的方法和装置
公开(公告)号：US20150073781A1
公开(公告)日：2015-03-12
申请号：US14543320
申请日：2014-11-17
申请人： Huawei Technologies Co., Ltd.
发明人： Fengyan Qi , Lei Miao
IPC分类号： G10L21/013
CPC分类号： G10L21/013 , G10L19/00 , G10L21/028 , G10L25/00 , G10L25/90
摘要： 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：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来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善检测音调周期的正确性的精度。

9. 发明授权

US08831961B2 Preprocessing method, preprocessing apparatus and coding device 有权
标题翻译：预处理方法，预处理装置和编码装置
公开(公告)号：US08831961B2
公开(公告)日：2014-09-09
申请号：US13914206
申请日：2013-06-10
申请人： Huawei Technologies Co., Ltd.
发明人： Lei Miao , Fengyan Qi , Jianfeng Xu , Dejun Zhang , Qing Zhang
IPC分类号： G10L19/00 , G10L19/18 , G10L21/06 , G10L19/06 , G10L19/09
CPC分类号： G10L21/06 , G10L19/06 , G10L19/09 , G10L19/18
摘要： The present disclosure relates to coding and decoding technologies, and discloses a preprocessing method, a preprocessing apparatus, and a coding device. The preprocessing method includes: obtaining characteristic information of a current frame signal; identifying whether the current frame signal requires no coding operation of removing LTC according to the characteristic information of the current frame signal and preset information; and if identifying that the current frame signal requires no coding operation of removing LTC, performing the coding operation of removing STC for the current frame signal; and if identifying that the current frame signal requires the coding operation of removing LTC, performing the coding operations of removing both LTC and STC for the current frame signal. Through the technical solution provided herein, the coding operation of removing LTC is performed for only part of the input frame signals.
摘要翻译：本公开涉及编码和解码技术，并且公开了一种预处理方法，预处理装置和编码装置。预处理方法包括：获得当前帧信号的特征信息; 识别当前帧信号是否不需要根据当前帧信号和预设信息的特征信息去除LTC的编码操作; 并且如果识别出当前帧信号不需要去除LTC的编码操作，则执行去除当前帧信号的STC的编码操作; 并且如果识别当前帧信号需要去除LTC的编码操作，则执行去除当前帧信号的LTC和STC的编码操作。通过本文提供的技术方案，仅对部分输入帧信号执行去除LTC的编码操作。

10. 发明授权

US08682645B2 Signal analyzer, signal analyzing method, signal synthesizer, signal synthesizing, windower, transformer and inverse transformer 有权
标题翻译：信号分析仪，信号分析方法，信号合成器，信号合成，风力发电，变压器和逆变换器
公开(公告)号：US08682645B2
公开(公告)日：2014-03-25
申请号：US13862655
申请日：2013-04-15
申请人： Huawei Technologies Co., Ltd.
发明人： Anisse Taleb , Fengyan Qi , Chen Hu
IPC分类号： G06F17/20
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.
摘要翻译：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。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式