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公开(公告)号：US20140006036A1
公开(公告)日：2014-01-02
申请号：US13956093
申请日：2013-07-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fengyan Qi , Lei Miao , Qing Zhang
IPC: G10L19/00
CPC classification number: G10L19/0019 , H03M7/30
Abstract: A coding method includes: obtaining a value of each sample of an input data frame; determining pulse samples and non-pulse samples in the input data frame according to the distribution of values of samples of the input data frame; encoding the determined pulse samples in the input data frame in a first coding mode to obtain a first data stream; encoding the determined non-pulse samples in the input data frame in a second coding mode to obtain a second data stream; and multiplexing the first data stream and the second data stream to obtain an output coded data stream of the input data frame. The technical solution under the present disclosure reduces the number of bits required for encoding the entire data frame is reduced, and improves the compression efficiency of the data frame with a wide dynamic range.
Abstract translation: 编码方法包括：获取输入数据帧的每个样本的值; 根据输入数据帧的样本值的分布，确定输入数据帧中的脉冲样本和非脉冲样本; 以第一编码模式对输入数据帧中确定的脉冲样本进行编码以获得第一数据流; 以第二编码模式对输入数据帧中确定的非脉冲样本进行编码，以获得第二数据流; 并且多路复用第一数据流和第二数据流，以获得输入数据帧的输出编码数据流。 本公开的技术方案减少了整个数据帧的编码所需的位数减少，并提高了宽动态范围的数据帧的压缩效率。
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公开(公告)号：US20130166288A1
公开(公告)日：2013-06-27
申请号：US13724769
申请日：2012-12-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yang Gao , Fengyan Qi
IPC: G10L25/90
Abstract: 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.
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公开(公告)号：US20250087219A1
公开(公告)日：2025-03-13
申请号：US18810463
申请日：2024-08-20
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zexin Liu , Fengyan Qi , Lei Miao
IPC: G10L19/002 , G10L19/005 , G10L19/02 , G10L19/028
Abstract: In a method to decode signals, a computing device decodes spectral coefficients of a current frame are grouped into a plurality of sub-bands. The computing device classifies a sub-band as a bit allocation unsaturated sub-band based on an average quantity of allocated bits per spectral coefficient of a sub-band of the plurality of sub-bands and a threshold. The computing device obtains a noise filling gain based on an envelope of the sub-band, and obtains a reconstructed spectral coefficient of the sub-band by performing noise filling based on the noise filling gain. The computing device then obtains a frequency domain audio signal based on spectral coefficients in the sub-band obtained by decoding and the reconstructed spectral coefficient.
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公开(公告)号：US10546589B2
公开(公告)日：2020-01-28
申请号：US16256421
申请日：2019-01-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Fengyan Qi , Lei Miao
IPC: G10L19/002 , G10L19/028 , G10L19/02 , G10L19/005
Abstract: A method and device for decoding a signal, where the method for decoding the signal includes obtaining spectral coefficients of sub-bands from a received bitstream by 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 decoding and is in the sub-band with unsaturated bit allocation to restore the spectral coefficient that has not been obtained by decoding, and obtaining a frequency domain signal according to the spectral coefficients obtained by 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.
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公开(公告)号：US20190325884A1
公开(公告)日：2019-10-24
申请号：US16502332
申请日：2019-07-03
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
IPC: G10L19/12 , G10L21/038 , G10L19/02
Abstract: A method for predicting a bandwidth extension frequency band signal includes demultiplexing a received bitstream to obtain a frequency domain signal; determining whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; predicting an excitation signal of the bandwidth extension frequency band according to the determination; and predicting the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band.
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Patent Agency Ranking
46.发明申请公开(公告)号：US20180366134A1
公开(公告)日：2018-12-20
申请号：US16106700
申请日：2018-08-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
IPC: G10L19/20 , G10L21/02 , G10L21/038 , G10L19/04
Abstract: An audio signal decoding method includes obtaining mode information of a high frequency band signal of an audio signal and indices of a low frequency band signal of the audio signal by parsing a received bitstream, obtaining the low frequency band signal based on the indices, predicting an excitation signal of a high frequency band signal based on the low frequency band signal, and reconstructing the high frequency band signal based on the frequency envelope and the excitation signal. A manner for obtaining the frequency envelope of the high frequency band signal when mode information indicates the high frequency band signal is a harmonic type signal is different from a manner for obtaining the frequency envelope of the high frequency band signal when the mode information indicates the high frequency band signal is a non-harmonic type signal.
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公开(公告)号：US10089997B2
公开(公告)日：2018-10-02
申请号：US15615810
申请日：2017-06-06
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
IPC: G10L19/20 , G10L21/038 , G10L19/04 , G10L21/02
Abstract: An audio signal decoding method includes: obtaining mode information of a high frequency band signal of an audio signal and indices of a low frequency band signal of the audio signal by parsing a received bitstream; obtaining the low frequency band signal based on the indices; predicting an excitation signal of a high frequency band signal based on the low frequency band signal; and reconstructing the high frequency band signal based on the frequency envelope and the excitation signal. A manner for obtaining the frequency envelope of the high frequency band signal when mode information indicates the high frequency band signal is a harmonic type signal is different from a manner for obtaining the frequency envelope of the high frequency band signal when the mode information indicates the high frequency band signal is not a harmonic type signal.
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公开(公告)号：US20180130481A1
公开(公告)日：2018-05-10
申请号：US15864147
申请日：2018-01-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
Abstract: In an audio signal decoding method, a decoded frequency domain signal of a current frame of the audio signal is obtained by decoding a received bitstream; a predicted frequency domain signal of the current frame is obtained according to the decoded frequency domain signal the current frame when the decoded frequency domain signal meets anyone of two given conditions; and a time domain signal of the current frame is obtained according to the decoded frequency domain signal and the predicted frequency domain signal.
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公开(公告)号：US20180122393A1
公开(公告)日：2018-05-03
申请号：US15848486
申请日：2017-12-20
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Zexin Liu , Lei Miao , Fengyan Qi
IPC: G10L19/12 , G10L19/02 , G10L21/038
CPC classification number: G10L19/12 , G10L19/02 , G10L19/08 , G10L21/038
Abstract: A method for predicting a bandwidth extension frequency band signal includes demultiplexing a received bitstream to obtain a frequency domain signal; determining whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; predicting an excitation signal of the bandwidth extension frequency band according to the determination; and predicting the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band.
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公开(公告)号：US09881626B2
公开(公告)日：2018-01-30
申请号：US15486683
申请日：2017-04-13
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
Inventor： Fuwei Ma , Dejun Zhang , Lei Miao , Fengyan Qi
IPC: G10L19/00 , G10L21/00 , G10L19/038 , G10L19/107 , G10L19/12
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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