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公开(公告)号：CA2944874A1
公开(公告)日：2015-11-05
申请号：CA2944874
申请日：2015-03-31
Applicant: QUALCOMM INC
Inventor： RAMADAS PRAVIN KUMAR , SINDER DANIEL J , VILLETTE STEPHANE PIERRE , RAJENDRAN VIVEK
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：PH12015501516B1
公开(公告)日：2015-09-21
申请号：PH12015501516
申请日：2015-07-03
Applicant: QUALCOMM INC
Inventor： ATTI VENKATRAMAN SRINIVASA , KRISHNAN VENKATESH , RAJENDRAN VIVEK , VILLETTE STEPHANE PIERRE
IPC: G10L19/07 , G10L19/03 , G10L19/24 , G10L21/0208 , G10L21/0216 , G10L21/038 , 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.
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公开(公告)号：CA2944874C
公开(公告)日：2022-09-20
申请号：CA2944874
申请日：2015-03-31
Applicant: QUALCOMM INC
Inventor： RAMADAS PRAVIN KUMAR , SINDER DANIEL J , VILLETTE STEPHANE PIERRE , RAJENDRAN VIVEK
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：MY171188A
公开(公告)日：2019-09-30
申请号：MYPI2015702276
申请日：2013-08-06
Applicant: QUALCOMM INC
Inventor： ATTI VENKATRAMAN SRINIVASA , KRISHNAN VENKATESH , RAJENDRAN VIVEK , VILLETTE STEPHANE PIERRE
Abstract: A particular method includes determining (504), 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 (506) the high-band portion of the audio signal and generating an encoded signal. Generating (508) 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. Figure l
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公开(公告)号：HUE042387T2
公开(公告)日：2019-06-28
申请号：HUE13753450
申请日：2013-08-06
Applicant: QUALCOMM INC
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Patent Agency Ranking
公开(公告)号：HUE041343T2
公开(公告)日：2019-05-28
申请号：HUE15716340
申请日：2015-03-31
Applicant: QUALCOMM INC
Inventor： RAMADAS PRAVIN KUMAR , SINDER DANIEL J , VILLETTE STEPHANE PIERRE , RAJENDRAN VIVEK
IPC: G10L19/24
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公开(公告)号：RU2683632C2
公开(公告)日：2019-03-29
申请号：RU2016142184
申请日：2015-03-31
Applicant: QUALCOMM INC
Inventor： RAMADAS PRAVIN KUMAR , SINDER DANIEL J , VILLETTE STEPHANE PIERRE , RAJENDRAN VIVEK
Abstract: Изобретениеотноситсяк средствамдлягенерациивысокополосногосигналавозбуждения. Техническийрезультатзаключаетсяв уменьшенииколичестваартефактовв невокализованнойобластивысокополосногосигнала. Извлекаютпараметрклассификациивокализованностивходногосигналанаосновепринятогобитовогопотока, причемвходнойсигналсоответствуетаудиосигналу. Управляютдиапазономчастотогибающейпредставлениявходногосигналанаоснованиипараметраклассификациивокализованности, причемупомянутымдиапазономчастотуправляютнаоснованиичастотысрезафильтранизкихчастот, применяемогок упомянутомупредставлениювходногосигнала. Модулируютсигналбелогошуманаоснованииуправляемогодиапазоначастотогибающей. Генерируютвысокополосныйсигналвозбуждения, соответствующийдекодированнойверсииаудиосигнала, наоснованиимодулированногосигналабелогошума. 4 н. и 26 з.п. ф-лы, 9 ил.
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公开(公告)号：ZA201607459B
公开(公告)日：2018-11-28
申请号：ZA201607459
申请日：2016-10-28
Applicant: QUALCOMM INC
Inventor： RAJENDRAN VIVEK , VILLETTE STEPHANE PIERRE , SINDER DANIEL J , RAMADAS PRAVIN KUMAR
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：ZA201506577B
公开(公告)日：2018-08-29
申请号：ZA201506577
申请日：2015-09-07
Applicant: QUALCOMM INC
Inventor： ATTI VENKATRAMAN SRINIVASA , KRISHNAN VENKATESH , RAJENDRAN VIVEK , VILLETTE STEPHANE PIERRE
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.
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公开(公告)号：UA116371C2
公开(公告)日：2018-03-12
申请号：UAA201508656
申请日：2013-08-06
Applicant: QUALCOMM INC
Inventor： ATTI VENKATRAMAN SRINIVASA , KRISHNAN VENKATESH , RAJENDRAN VIVEK , VILLETTE STEPHANE PIERRE
IPC: G10L19/07 , G10L21/0208 , G10L19/24 , G10L21/0216 , G10L21/0388
Abstract: Данийспосібвключаєв себевизначення, наосновіспектральноїінформації, щовідповідаєаудіосигналу, якийвключаєв себечастинусмугинизькихчастоті частинусмугивисокихчастот, того, щоаудіосигналвключаєв себекомпонент, якийвідповідаєумовіформуванняартефактів. Спосібтакожвключаєв себефільтраціючастинисмугивисокихчастотаудіосигналуі формуваннякодованогосигналу. Формуваннякодованогосигналувключаєв себевизначенняінформаціїпосиленнянаосновівідношенняпершоїенергії, щовідповідаєфільтрованомувихідномусигналусмугивисокихчастот, додругоїенергії, щовідповідаєчастинісмугинизькихчастот, длятого, щобзменшуватичутнийефектумовиформуванняартефактів.
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