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

IPC: G10L19/12 ,  G10L19/24

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.

公开(公告)号：NZ724656A

公开(公告)日：2021-12-24

申请号：NZ72465615

申请日：2015-03-31

Applicant: QUALCOMM INC

Inventor： RAJENDRAN VIVEK ,  VILLETTE STEPHANE ,  RAMADAS PRAVIN KUMAR ,  SINDER DANIEL J

IPC: G10L19/24

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.

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

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

IPC: G10L19/08 ,  G10L19/24

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.

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.