公开(公告)号：CA2961405C

公开(公告)日：2022-03-15

申请号：CA2961405

申请日：2015-10-09

Applicant: QUALCOMM INC

Inventor： KIM MOO YOUNG ,  PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008

Abstract: In general, techniques are described for signaling layers for scalable coding of higher order ambisonic audio data. A device comprising a memory and a processor may be configured to perform the techniques. The memory may be configured to store the bitstream. The processor may be configured to obtain, from the bitstream, an indication of a number of layers specified in the bitstream, and obtain the layers of the bitstream based on the indication of the number of layers.

公开(公告)号：AU2015330758B2

公开(公告)日：2020-10-01

申请号：AU2015330758

申请日：2015-10-09

Applicant: QUALCOMM INC

Inventor： KIM MOO YOUNG ,  PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008 ,  G10L19/16

Abstract: In general, techniques are described for signaling layers for scalable coding of higher order ambisonic audio data. A device comprising a memory and a processor may be configured to perform the techniques. The memory may be configured to store the bitstream. The processor may be configured to obtain, from the bitstream, an indication of a number of layers specified in the bitstream, and obtain the layers of the bitstream based on the indication of the number of layers.

公开(公告)号：AU2015258831B2

公开(公告)日：2020-03-12

申请号：AU2015258831

申请日：2015-05-15

Applicant: QUALCOMM INC

Inventor： KIM MOO YOUNG ,  PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008

Abstract: In general, techniques are described for performing codebook selection when coding vectors decomposed from higher-order ambisonic coefficients. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store a plurality of codebooks to use when performing vector dequantization with respect to a vector quantized spatial component of a soundfield. The vector quantized spatial component may be obtained through application of a decomposition to a plurality of higher order ambisonic coefficients. The processor may be configured to select one of the plurality of codebooks.

公开(公告)号：AU2015258827B2

公开(公告)日：2018-12-20

申请号：AU2015258827

申请日：2015-05-15

Applicant: QUALCOMM INC

Inventor： KIM MOO YOUNG ,  PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008

Abstract: In general, techniques are described for coding of vectors decomposed from higher-order ambisonic coefficients. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store audio data. The processor may be configured to determine whether to perform vector dequantization or scalar dequantization with respect to a decomposed version of the plurality of HOA coefficients.

公开(公告)号：ES2689566T3

公开(公告)日：2018-11-14

申请号：ES16183135

申请日：2014-05-29

Applicant: QUALCOMM INC

Inventor： PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008 ,  G06F17/16 ,  H04S7/00

Abstract: Un procedimiento que comprende: obtener un primer conjunto distinto de cero de coeficientes de un vector (717) representativo de un componente de primer plano de un campo sonoro, habiéndose descompuesto linealmente el vector a partir de una pluralidad de coeficientes armónicos esféricos que describen el campo sonoro; obtener uno de una pluralidad de modos de configuración (760) mediante el cual extraer el conjunto distinto de cero de coeficientes del vector de acuerdo con el uno de la pluralidad de modos de configuración, en el que el uno de la pluralidad de modos de configuración indica que el conjunto distinto de cero de los coeficientes incluye aquellos coeficientes que corresponden a un orden mayor que un orden de una función de base a la que uno o varios de la pluralidad de coeficientes armónicos esféricos corresponden y excluye al menos uno de los coeficientes que corresponden a un orden mayor que el orden de la función de base a la que el uno o varios de la pluralidad de coeficientes armónicos esféricos corresponde; y extraer el conjunto distinto de cero de los coeficientes del vector (717) basándose en el un modo obtenido de la pluralidad de modos de configuración

公开(公告)号：AU2015258831A1

公开(公告)日：2016-11-10

申请号：AU2015258831

申请日：2015-05-15

Applicant: QUALCOMM INC

Inventor： KIM MOO YOUNG ,  PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008

Abstract: In general, techniques are described for performing codebook selection when coding vectors decomposed from higher-order ambisonic coefficients. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store a plurality of codebooks to use when performing vector dequantization with respect to a vector quantized spatial component of a soundfield. The vector quantized spatial component may be obtained through application of a decomposition to a plurality of higher order ambisonic coefficients. The processor may be configured to select one of the plurality of codebooks.

公开(公告)号：CA2933562A1

公开(公告)日：2015-08-06

申请号：CA2933562

申请日：2015-01-28

Applicant: QUALCOMM INC

Inventor： PETERS NILS GUNTHER ,  SEN DIPANJAN

IPC: G10L19/008

Abstract: In general, techniques are described for transitioning an ambient higher order ambisonic coefficient. A device comprising a memory and a processor may be configured to perform the techniques. The processor may obtain, from a frame of a bitstream of encoded audio data, a bit indicative of a reduced vector. The reduced vector may represent, at least in part, a spatial component of a sound field. The processor may also obtain, from the frame, a bit indicative of a transition of an ambient higher-order ambisonic coefficient. The ambient higher-order ambisonic coefficient may represent, at least in part, an ambient component of the sound field. The reduced vector may include a vector element associated with the ambient higher-order ambisonic coefficient in transition. The memory may be configured to store the frame of the bitstream.

公开(公告)号：CA2999289C

公开(公告)日：2021-10-19

申请号：CA2999289

申请日：2016-10-12

Applicant: QUALCOMM INC

Inventor： PETERS NILS GUNTHER ,  SEN DIPANJAN ,  KIM MOO YOUNG

IPC: H04S3/02 ,  G10L19/008

Abstract: In general, techniques are described for coding higher-order ambisonic coefficients during multiple transitions. A device comprising a processor and a memory coupled to the processor may be configured to perform the techniques. The processor may be configured to obtain a multi-transition indication of whether an ambient HOA coefficient is in transition during a same frame of the bitstream as a foreground audio signal is in transition. The processor may also be configured to obtain a vector that describes a spatial characteristic of a corresponding foreground audio signal based on the multi-transition indication, both the vector and the corresponding HOA audio signal decomposed from the HOA audio data. The memory may be configured to store the vector.

公开(公告)号：MY176232A

公开(公告)日：2020-07-24

申请号：MYPI2016704112

申请日：2015-05-15

Applicant: QUALCOMM INC

Inventor： PETERS NILS GUNTHER ,  SEN DIPANJAN ,  KIM MOO YOUNG

Abstract: In general, techniques are described for coding of vectors decomposed from higher order ambisonic coefficients (11, 11', 47, 47', 47", 59). A device comprising a processor and a memory may perform the techniques. The processor may be configured to obtain from a bitstream (21) data indicative of a plurality of weight values that represent a vector that is included in a decomposed version of the plurality of HOA coefficients (11, 11 ', 47, 47', 47'', 59). Each of the weight values may correspond to a respective one of a plurality of weights in a weighted sum of code vectors that represents the vector and that includes a set of code vectors. The processor may further be configured to reconstruct the vector based on the weight values and the code vectors. The memory may be configured to store the reconstructed vector.

公开(公告)号：AU2015284004B2

公开(公告)日：2020-01-02

申请号：AU2015284004

申请日：2015-07-02

Applicant: QUALCOMM INC

Inventor： PETERS NILS GUNTHER ,  SEN DIPANJAN ,  MORRELL MARTIN JAMES

IPC: H04R5/04 ,  H04S3/00

Abstract: In general, techniques are described for compression and decoding of audio data. An example device for compressing audio data includes one or more processors configured to apply a decorrelation transform to ambient ambisonic coefficients and obtain a decorrelated representation of the ambient ambisonic coefficients. The coefficients are extracted from a plurality of higher order ambisonic coefficients and represent a background component of the sound field described by the plurality of higher order ambisonic coefficients, wherein at least one of the plurality of higher order ambisonic coefficients is associated with a spherical basis function having an order greater than one.