公开(公告)号：ES2715847T3

公开(公告)日：2019-06-06

申请号：ES13753450

申请日：2013-08-06

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH ,  RAJENDRAN VIVEK ,  VILLETTE STEPHANE PIERRE

IPC: G10L21/0208 ,  G10L19/07 ,  G10L19/24 ,  G10L21/0216 ,  G10L21/0388

Abstract: Un procedimiento que comprende: determinar, basándose en información espectral correspondiente a una señal de audio que incluye una parte de banda baja y una parte de banda alta, que la señal de audio incluye un componente correspondiente a una condición de generación de artefactos; filtrar la parte de banda alta de la señal de audio para generar una salida de banda alta filtrada basándose en una separación entre pares espectrales interlineal (LSP) asociada con la parte de banda alta de la señal de audio; y generar una señal codificada, en el que generar la señal codificada incluye determinar información de ganancia basándose en una relación de una primera energía correspondiente a la salida de banda alta filtrada a una segunda energía correspondiente a una señal de banda alta sintetizada generada basándose en la parte de banda baja y una señal de ruido modulado o la parte de banda baja para reducir un efecto audible de la condición de generación de artefactos.

公开(公告)号：PL2954523T3

公开(公告)日：2019-05-31

申请号：PL13753450

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

公开(公告)号：SI3174051T1

公开(公告)日：2019-04-30

申请号：SI201331363

申请日：2013-08-29

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

IPC: G10L21/00

公开(公告)号：UA117745C2

公开(公告)日：2018-09-25

申请号：UAA201508653

申请日：2013-08-29

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

IPC: G10L21/038

Abstract: Спосібвключаєв себеприйомпершогозначеннякоефіцієнтазмішування. Першезначеннявідповідаєпершійчастиніаудіосигналу, щоприймаєтьсяв аудіокодері. Спосібвключаєв себеприйомдругогозначеннякоефіцієнтазмішування. Другезначеннявідповідаєдругійчастиніаудіосигналу. Спосібтакожвключаєв себеформуваннятретьогозначеннякоефіцієнтазмішування, щонайменшечастково, наосновіпершогозначенняі другогозначенняі змішуваннясигналузбудженняз модульованимшумомнаосновітретьогозначення. Іншийспосібвключаєв себевизначенняпершогонаборуспектральнихзначеньчастоти, відповіднихаудіосигналу, івизначеннядругогонаборуспектральнихзначеньчастоти, якийапроксимуєпершийнабірспектральнихзначеньчастоти. Значенняпосилення, відповіднещонайменшечастиніаудіосигналу, регулюєтьсянаосновірізниціміжпершимнаборомі другимнабором.

公开(公告)号：PH12015501694B1

公开(公告)日：2015-10-19

申请号：PH12015501694

申请日：2015-07-31

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

IPC: G10L21/0264 ,  G10L21/038

Abstract: A particular method includes determining, based on an inter-line spectral pair (LSP) spacing corresponding to an audio signal, that the audio signal includes a component corresponding to an artifact-generating condition. The method also includes, in response to determining that the audio signal includes the component, adjusting a gain parameter corresponding to the audio signal. For example, the gain parameter may be adjusted via gain attenuation and/or gain smoothing.

公开(公告)号：SG11201505066SA

公开(公告)日：2015-08-28

申请号：SG11201505066S

申请日：2013-08-06

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

IPC: G10L21/0264 ,  G10L21/038

公开(公告)号：AU2013377884A1

公开(公告)日：2015-07-23

申请号：AU2013377884

申请日：2013-08-06

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

IPC: G10L21/0264 ,  G10L21/038

Abstract: A particular method includes determining, based on an inter-line spectral pair (LSP) spacing corresponding to an audio signal, that the audio signal includes a component corresponding to an artifact-generating condition. The method also includes, in response to determining that the audio signal includes the component, adjusting a gain parameter corresponding to the audio signal. For example, the gain parameter may be adjusted via gain attenuation and/or gain smoothing.

公开(公告)号：CA2896965C

公开(公告)日：2020-11-10

申请号：CA2896965

申请日：2013-08-29

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

IPC: G10L21/038

Abstract: A method includes receiving a first value of a mixing factor. The first value corresponds to a first portion of an audio signal received at an audio encoder. The method includes receiving a second value of the mixing factor. The second value corresponds to a second portion of the audio signal. The method also includes generating a third value of the mixing factor at least partially based on the first value and the second value and mixing an excitation signal with modulated noise based on the third value. Another method includes determining a first set of spectral frequency values corresponding to an audio signal and determining a second set of spectral frequency values that approximates the first set of spectral frequency values. A gain value corresponding to at least a portion of the audio signal is adjusted based on a difference between the first set and the second set.

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

公开(公告)号：MY170595A

公开(公告)日：2019-08-19

申请号：MYPI2015702275

申请日：2013-08-29

Applicant: QUALCOMM INC

Inventor： ATTI VENKATRAMAN SRINIVASA ,  KRISHNAN VENKATESH

Abstract: A method includes receiving (502) a first value of a mixing factor (413). The first value corresponds to a first portion of an audio signal received at an audio coder. The method includes receiving (504) a second value of the mixing factor. The second value corresponds to a second portion of the audio signal. The method also includes generating (506) a third value of the mixing factor at least partially based on the first value and the second value and mixing (508) an excitation signal with modulated noise (420) based on the third value. Another method includes determining (602) a first set of spectral frequency values corresponding to an audio signal and determining (604) a second set of spectral frequency values that approximates the first set of spectral frequency values. A gain value corresponding ( 606) to at least a portion of the audio signal is adjusted based on a difference between the first set and the second set. Figure 4