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11.发明申请公开(公告)号：US20140233716A1
公开(公告)日：2014-08-21
申请号：US13771957
申请日：2013-02-20
Applicant: QUALCOMM INCORPORATED
Inventor： Stephane Pierre Villette , Daniel J. Sinder
IPC: H04M3/56
CPC classification number: H04M3/568 , G10L19/018
Abstract: A multi-party control unit (MCU) generates, based on audio data streams that represent sounds associated terminal devices, a mixed audio data stream. In addition, the MCU modifies the mixed mono audio data to steganographically embed sub-streams that include representations of the mono audio data streams. A terminal device receives the modified mixed audio data stream. When the terminal device is configured for stereo playback, the terminal device performs an inverse steganographic process to extract, from the mixed audio data stream, the sub-streams. The terminal device generates and outputs multi-channel audio data based on the extracted sub-streams and the mixed audio data stream. When the terminal device is not configured for stereo playback, the terminal device outputs sound based on the mixed audio data stream without extracting the embedded sub-streams.
Abstract translation: 多方控制单元（MCU）基于表示声音关联终端设备的音频数据流，生成混合音频数据流。 此外，MCU将混合的单声道音频数据修改为隐写地嵌入包括单声道音频数据流的表示的子流。 终端设备接收修改的混合音频数据流。 当终端设备被配置为立体声回放时，终端设备执行反隐匿处理以从混合音频数据流中提取子流。 终端设备基于所提取的子流和混合音频数据流生成并输出多声道音频数据。 当终端设备未配置为立体声播放时，终端设备基于混合音频数据流输出声音，而不提取嵌入的子流。
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公开(公告)号：US11710492B2
公开(公告)日：2023-07-25
申请号：US16591478
申请日：2019-10-02
Applicant: QUALCOMM Incorporated
Inventor： Stephane Pierre Villette , Daniel Jared Sinder
CPC classification number: G10L19/167 , G06N5/04 , G06N20/00 , G10L2019/0013 , G10L2019/0014
Abstract: Methods, systems, and devices for encoding are described. A device, which may be otherwise known as user equipment (UE), may support standards-compatible audio encoding (e.g., speech encoding) using a pre-encoded database. The device may receive a digital representation of an audio signal and identify, based on receiving the digital representation of the audio signal, a database that is pre-encoded according to a coding standard and that includes a quantity of digital representations of other audio signals. The device may encode the digital representation of the audio signal using a machine learning scheme and information from the database pre-encoded according to the coding standard. The device may generate a bitstream of the digital representation that is compatible with the coding standard based on encoding the digital representation of the audio signal, and output a representation of the bitstream.
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公开(公告)号：US20210104250A1
公开(公告)日：2021-04-08
申请号：US16591478
申请日：2019-10-02
Applicant: QUALCOMM Incorporated
Inventor： Stephane Pierre Villette , Daniel Jared Sinder
Abstract: Methods, systems, and devices for encoding are described. A device, which may be otherwise known as user equipment (UE), may support standards-compatible audio encoding (e.g., speech encoding) using a pre-encoded database. The device may receive a digital representation of an audio signal and identify, based on receiving the digital representation of the audio signal, a database that is pre-encoded according to a coding standard and that includes a quantity of digital representations of other audio signals. The device may encode the digital representation of the audio signal using a machine learning scheme and information from the database pre-encoded according to the coding standard. The device may generate a bitstream of the digital representation that is compatible with the coding standard based on encoding the digital representation of the audio signal, and output a representation of the bitstream.
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公开(公告)号：US10297263B2
公开(公告)日：2019-05-21
申请号：US15611706
申请日：2017-06-01
Applicant: QUALCOMM Incorporated
Inventor： Pravin Kumar Ramadas , Daniel J. Sinder , Stephane Pierre Villette , Vivek Rajendran
Abstract: A method includes extracting a voicing classification parameter of an audio signal and determining a filter coefficient of a low pass filter based on the voicing classification parameter. The method also includes filtering a low-band portion of the audio signal to generate a low-band audio signal and controlling an amplitude of a temporal envelope of the low-band audio signal based on the filter coefficient. The method also includes modulating a white noise signal based on the amplitude of the temporal envelope to generate a modulated white noise signal and scaling the modulated white noise signal based on a noise gain to generate a scaled modulated white noise signal. The method also includes mixing a scaled version of the low-band audio signal with the scaled modulated white noise signal to generate a high-band excitation signal that is used to generate a decoded version of the audio signal.
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15.发明申请公开(公告)号：US20140236585A1
公开(公告)日：2014-08-21
申请号：US14015996
申请日：2013-08-30
Applicant: QUALCOMM Incorporated
Inventor： Subasingha Shaminda Subasingha , Venkatesh Krishnan , Vivek Rajendran , Stephane Pierre Villette
IPC: G10L13/02
CPC classification number: G10L13/02 , G10L19/005 , G10L19/10 , G10L25/90
Abstract: A method for determining pitch pulse period signal boundaries by an electronic device is described. The method includes obtaining a signal. The method also includes determining a first averaged curve based on the signal. The method further includes determining at least one first averaged curve peak position based on the first averaged curve and a threshold. The method additionally includes determining pitch pulse period signal boundaries based on the at least one first averaged curve peak position. The method also includes synthesizing a speech signal.
Abstract translation: 描述了一种通过电子设备确定音调脉冲周期信号边界的方法。 该方法包括获得信号。 该方法还包括基于该信号来确定第一平均曲线。 该方法还包括基于第一平均曲线和阈值确定至少一个第一平均曲线峰值位置。 该方法还包括基于至少一个第一平均曲线峰值位置来确定音调脉冲周期信号边界。 该方法还包括合成语音信号。
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Patent Agency Ranking
公开(公告)号：US20140236584A1
公开(公告)日：2014-08-21
申请号：US14015991
申请日：2013-08-30
Applicant: QUALCOMM Incorporated
Inventor： Subasingha Shaminda Subasingha , Venkatesh Krishnan , Vivek Rajendran , Stephane Pierre Villette
IPC: G10L19/032
CPC classification number: G10L19/032 , G10L19/02 , G10L19/097
Abstract: A method for quantizing phase information on an electronic device is described. The method includes obtaining a speech signal. The method also includes determining a prototype pitch period signal based on the speech signal and transforming the prototype pitch period signal into a first frequency-domain signal. The method additionally includes mapping the first frequency-domain signal into a plurality of subbands. The method also includes determining a global alignment based on the first frequency-domain signal and quantizing the global alignment utilizing scalar quantization to obtain a quantized global alignment. The method additionally includes determining a plurality of band alignments corresponding to the plurality of subbands. The method also includes quantizing the plurality of band alignments utilizing vector quantization to obtain a quantized plurality of band alignments. The method further includes transmitting the quantized global alignment and the quantized plurality of band alignments.
Abstract translation: 描述用于量化电子设备上的相位信息的方法。 该方法包括获得语音信号。 该方法还包括基于语音信号确定原型音调周期信号，并将原型音调周期信号变换为第一频域信号。 该方法还包括将第一频域信号映射到多个子带中。 该方法还包括基于第一频域信号确定全局对准，并使用标量量化量化全局比对以获得量化的全局比对。 该方法还包括确定对应于多个子带的多个频带对准。 该方法还包括利用矢量量化来量化多个频带比对以获得量化的多个频带比对。 该方法还包括发送量化的全局比对和量化的多个频带比对。
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公开(公告)号：US20140229171A1
公开(公告)日：2014-08-14
申请号：US13959188
申请日：2013-08-05
Applicant: Qualcomm Incorporated
Inventor： Venkatraman Srinivasa Atti , Venkatesh Krishnan , Vivek Rajendran , Stephane Pierre Villette
IPC: G10L19/03
CPC classification number: G10L19/03 , G10L19/07 , G10L19/24 , G10L21/0208 , G10L21/0216 , G10L21/0388
Abstract: A particular method includes determining, based on spectral information corresponding to an audio signal that includes a low-band portion and a high-band portion, that the audio signal includes a component corresponding to an artifact-generating condition. The method also includes filtering the high-band portion of the audio signal and generating an encoded signal. Generating the encoded signal includes determining gain information based on a ratio of a first energy corresponding to filtered high-band output to a second energy corresponding to the low-band portion to reduce an audible effect of the artifact-generating condition.
Abstract translation: 特定方法包括基于与包括低频带部分和高频带部分的音频信号相对应的频谱信息来确定音频信号包括对应于假象产生条件的分量。 该方法还包括对音频信号的高频带部分进行滤波并产生编码信号。 生成编码信号包括基于与经滤波的高频带输出相对应的第一能量与对应于低频带部分的第二能量的比率确定增益信息，以减少伪影产生条件的可听见的影响。
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公开(公告)号：US20170270942A1
公开(公告)日：2017-09-21
申请号：US15611706
申请日：2017-06-01
Applicant: QUALCOMM Incorporated
Inventor： Pravin Kumar Ramadas , Daniel J. Sinder , Stephane Pierre Villette , Vivek Rajendran
Abstract: A method includes extracting a voicing classification parameter of an audio signal and determining a filter coefficient of a low pass filter based on the voicing classification parameter. The method also includes filtering a low-band portion of the audio signal to generate a low-band audio signal and controlling an amplitude of a temporal envelope of the low-band audio signal based on the filter coefficient. The method also includes modulating a white noise signal based on the amplitude of the temporal envelope to generate a modulated white noise signal and scaling the modulated white noise signal based on a noise gain to generate a scaled modulated white noise signal. The method also includes mixing a scaled version of the low-band audio signal with the scaled modulated white noise signal to generate a high-band excitation signal that is used to generate a decoded version of the audio signal.
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公开(公告)号：US09697843B2
公开(公告)日：2017-07-04
申请号：US14265693
申请日：2014-04-30
Applicant: QUALCOMM Incorporated
Inventor： Pravin Kumar Ramadas , Daniel J. Sinder , Stephane Pierre Villette , Vivek Rajendran
Abstract: A particular method includes determining, at a device, a voicing classification of an input signal. The input signal corresponds to an audio signal. The method also includes controlling an amount of an envelope of a representation of the input signal based on the voicing classification. The method further includes modulating a white noise signal based on the controlled amount of the envelope. The method also includes generating a high band excitation signal based on the modulated white noise signal.
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公开(公告)号：US09524720B2
公开(公告)日：2016-12-20
申请号：US14334921
申请日：2014-07-18
Applicant: QUALCOMM Incorporated
Inventor： Sen Li , Stephane Pierre Villette , Daniel J. Sinder , Pravin Kumar Ramadas
IPC: G10L19/00 , G10L21/0388
CPC classification number: G10L19/00 , G10L21/0388
Abstract: Systems and methods of performing blind bandwidth extension are disclosed. In an embodiment, a method includes determining, based on a set of low-band parameters of an audio signal, a first set of high-band parameters and a second set of high-band parameters. The method further includes generating a predicted set of high-band parameters based on a weighted combination of the first set of high-band parameters and the second set of high-band parameters.
Abstract translation: 公开了执行盲带宽扩展的系统和方法。 在一个实施例中，一种方法包括基于一组音频信号的低频带参数来确定第一组高频带参数和第二组高频带参数。 该方法还包括基于第一组高频带参数和第二组高频带参数的加权组合来生成预测的一组高频带参数。
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