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公开(公告)号：US20150317994A1
公开(公告)日：2015-11-05
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
IPC: G10L19/08
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.
Abstract translation: 一种特定的方法包括在设备处确定输入信号的语音分类。 输入信号对应于音频信号。 该方法还包括基于语音分类来控制输入信号的表示的包络的量。 该方法还包括基于信封的受控量来调制白噪声信号。 该方法还包括基于调制的白噪声信号产生高频激励信号。
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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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公开(公告)号：US20190087712A1
公开(公告)日：2019-03-21
申请号：US15707409
申请日：2017-09-18
Applicant: QUALCOMM Incorporated
Inventor： Sairam Sundaresan , Bijan Forutanpour , Pravin Kumar Ramadas
Abstract: A neural network processing system be configured to: (a) execute a first neural network and a second neural network; (b) run a first data segment through the first neural network to return a first score and run a second data segment through the second neural network to return a second score; (c) compare the first score with the second score; and (d) retrain the first neural network based on the comparison
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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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Patent Agency Ranking
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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公开(公告)号：US20150170655A1
公开(公告)日：2015-06-18
申请号：US14334988
申请日：2014-07-18
Applicant: QUALCOMM Incorporated
Inventor： Sen Li , Stephane Pierre Villette , Daniel J. Sinder , Pravin Kumar Ramadas
IPC: G10L19/00
CPC classification number: G10L19/00 , G10L21/0388
Abstract: Systems and methods of performing blind bandwidth extension are disclosed. In an embodiment, a method includes receiving, at a decoder of a speech vocoder, a set of low-band parameters as part of a narrowband bitstream. The set of low-band parameters are received from an encoder of the speech vocoder. The method also includes predicting a set of high-band parameters based on the set of low-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，一种方法包括在语音声码器的解码器处接收作为窄带比特流的一部分的一组低频带参数。 从语音声码器的编码器接收低频带参数的集合。 该方法还包括基于低频带参数的集合预测一组高频带参数。
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公开(公告)号：US12170094B2
公开(公告)日：2024-12-17
申请号：US18047572
申请日：2022-10-18
Applicant: QUALCOMM Incorporated
Inventor： Stephane Villette , Sen Li , Pravin Kumar Ramadas , Daniel Jared Sinder
Abstract: A device includes one or more processors configured to input one or more segments of an input media stream into a feature extractor. The one or more processors are further configured to pass an output of the feature extractor into an utterance classifier to produce at least one representation of at least one utterance class of a plurality of utterance classes. The one or more processors are further configured to pass the output of the feature extractor and the at least one representation into a segment matcher to produce a media output segment identifier.
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公开(公告)号：US09972334B2
公开(公告)日：2018-05-15
申请号：US15152949
申请日：2016-05-12
Applicant: QUALCOMM Incorporated
Inventor： Subasingha Shaminda Subasingha , Vivek Rajendran , Venkata Subrahmanyam Chandra Sekhar Chebiyyam , Venkatraman Atti , Pravin Kumar Ramadas , Daniel Jared Sinder , Stephane Pierre Villette
IPC: G10L19/00 , G10L19/22 , G10L19/06 , G10L19/16 , G10L25/69 , G10L25/81 , G10L19/26 , G10L19/20 , G10L21/0208
CPC classification number: G10L19/22 , G10L19/06 , G10L19/167 , G10L19/20 , G10L19/26 , G10L21/0208 , G10L25/69 , G10L25/81
Abstract: A device includes a decoder configured to receive an encoded audio signal at a decoder and to generate a synthesized signal based on the encoded audio signal. The device further includes a classifier configured to classify the synthesized signal based on at least one parameter determined from the encoded audio signal.
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公开(公告)号：US20170076734A1
公开(公告)日：2017-03-16
申请号：US15152949
申请日：2016-05-12
Applicant: QUALCOMM Incorporated
Inventor： Subasingha Shaminda Subasingha , Vivek Rajendran , Venkata Subrahmanyam Chandra Sekhar Chebiyyam , Venkatraman Atti , Pravin Kumar Ramadas , Daniel Jared Sinder , Stephane Pierre Villette
CPC classification number: G10L19/22 , G10L19/06 , G10L19/167 , G10L19/20 , G10L19/26 , G10L21/0208 , G10L25/69 , G10L25/81
Abstract: A device includes a decoder configured to receive an encoded audio signal at a decoder and to generate a synthesized signal based on the encoded audio signal. The device further includes a classifier configured to classify the synthesized signal based on at least one parameter determined from the encoded audio signal.
Abstract translation: 一种设备包括：解码器，被配置为在解码器处接收经编码的音频信号，并且基于编码的音频信号产生合成信号。 该设备还包括分类器，其被配置为基于从编码的音频信号确定的至少一个参数对合成信号进行分类。
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