公开(公告)号：US10986456B2

公开(公告)日：2021-04-20

申请号：US16152130

申请日：2018-10-04

Applicant: QUALCOMM Incorporated

Inventor： Jeongook Song ,  Dipanjan Sen

IPC: H04S5/00 ,  H04S3/00 ,  G10L19/008

Abstract: In general, techniques are described by which to perform spatial relation coding using virtual 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 audio data representative of zero-ordered higher order ambisonic (HOA) coefficient, and one or more greater-than-zero-ordered HOA coefficients. The processor may be configured to obtain, based on the one or more greater-than-zero-ordered HOA coefficients, a virtual zero-ordered HOA coefficient. The processor may also be configured to obtain, based on the virtual HOA coefficient, one or more parameters from which to synthesize the one or more greater-than-zero-ordered HOA coefficients. The processor may further be configured to generate a bitstream that includes a first indication representative of the zero-ordered HOA coefficients, and a second indication representative of the one or more parameters.

公开(公告)号：US10972851B2

公开(公告)日：2021-04-06

申请号：US16152153

申请日：2018-10-04

Applicant: QUALCOMM Incorporated

Inventor： Jeongook Song ,  Dipanjan Sen

IPC: H04S5/00 ,  H04S3/00 ,  G10L19/008

Abstract: In general, techniques are described by which to perform spatial relation coding of higher order ambisonic coefficients using expanded parameters. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store at least a portion of a bitstream, the bitstream including a first indication representative of an HOA coefficient associated with the spherical basis function having an order of zero, and a second indication representative of one or more parameters. The processor may be configured to perform parameter expansion with respect to the one or more parameters to obtain one or more expanded parameters, and synthesize, based on the one or more expanded parameters and the HOA coefficient associated with the spherical basis function having the order of zero, one or more HOA coefficients associated with one or more spherical basis functions having an order greater than zero.

公开(公告)号：US10075802B1

公开(公告)日：2018-09-11

申请号：US15671988

申请日：2017-08-08

Applicant: QUALCOMM Incorporated

Inventor： Moo Young Kim ,  Nils Günther Peters ,  Jeongook Song ,  Dipanjan Sen

IPC: H04S7/00 ,  G10L25/21 ,  G10L19/002 ,  G10L19/008 ,  H04S3/00

CPC classification number: H04S7/302 ,  G10L19/002 ,  G10L19/008 ,  G10L25/21 ,  H04S3/008 ,  H04S2400/13 ,  H04S2400/15 ,  H04S2420/11

Abstract: In general, techniques are described by which to perform bitrate allocation with respect to higher order ambisonic (HOA) audio data. A device comprising a memory and a processor may be configured to perform various aspects of the bitrate allocation techniques. The memory may be configured to store a spatially compressed version of the HOA audio data. The processor may be coupled to the memory, and configured to perform bitrate allocation, based on an analysis of transport channels representative of the spatially compressed version of the HOA audio data, and prior to performing gain control with respect to the transport channels or after performing inverse gain control with respect to the transport channels, to allocate a number of bits to each of the transport channels. The processor may also be configured to generate a bitstream that specifies each of the transport channels using the respective allocated number of bits.

公开(公告)号：US20150332682A1

公开(公告)日：2015-11-19

申请号：US14712799

申请日：2015-05-14

Applicant: QUALCOMM Incorporated

Inventor： Moo Young Kim ,  Jeongook Song

IPC: G10L19/008

CPC classification number: G10L19/008 ,  H04S7/30 ,  H04S2420/03 ,  H04S2420/07 ,  H04S2420/11

Abstract: A device for decoding audio data comprises a memory to store the audio data; and one or more processors coupled to the memory and configured to obtain spatial information for a spatial relation of non-zero order higher-order ambisonic (HOA) coefficients associated with a spherical basis function having an order greater than zero, with zero-order HOA coefficients associated with a spherical basis function having an order of zero, the spatial information resulting in an error between the non-zero order HOA coefficients and a signal model of the non-zero order HOA coefficients that represents at least one directional component of the non-zero order HOA coefficients in the spatial relation with the zero-order HOA coefficients, wherein the one or more processors are further configured to obtain sign information for the non-zero order HOA coefficients when reconstructing the non-zero order HOA coefficients using the spatial relation.

Abstract translation: 用于解码音频数据的设备包括存储音频数据的存储器; 以及一个或多个处理器，其耦合到所述存储器并且被配置为获得与具有大于零的阶数的球形基函数相关联的非零阶高阶环比（HOA）系数的空间关系的空间信息，具有零阶HOA 与具有零级的球面基函数相关联的系数，导致非零阶HOA系数之间的误差的空间信息和表示非零阶HOA系数的非零阶HOA系数的信号模型，其表示非零阶HOA系数的至少一个方向分量 与零阶HOA系数的空间关系中的零阶HOA系数，其中所述一个或多个处理器进一步被配置为在使用所述空间数据重构非零阶HOA系数时获得非零阶HOA系数的符号信息 关系。

公开(公告)号：US20190110148A1

公开(公告)日：2019-04-11

申请号：US16152153

申请日：2018-10-04

Applicant: QUALCOMM Incorporated

Inventor： Jeongook Song ,  Dipanjan Sen

IPC: H04S5/00

Abstract: In general, techniques are described by which to perform spatial relation coding of higher order ambisonic coefficients using expanded parameters. A device comprising a memory and a processor may perform the techniques. The memory may be configured to store at least a portion of a bitstream, the bitstream including a first indication representative of an HOA coefficient associated with the spherical basis function having an order of zero, and a second indication representative of one or more parameters. The processor may be configured to perform parameter expansion with respect to the one or more parameters to obtain one or more expanded parameters, and synthesize, based on the one or more expanded parameters and the HOA coefficient associated with the spherical basis function having the order of zero, one or more HOA coefficients associated with one or more spherical basis functions having an order greater than zero.

公开(公告)号：US20190110147A1

公开(公告)日：2019-04-11

申请号：US16152130

申请日：2018-10-04

Applicant: QUALCOMM Incorporated

Inventor： Jeongook Song ,  Dipanjan Sen

IPC: H04S5/00

Abstract: In general, techniques are described by which to perform spatial relation coding using virtual 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 audio data representative of zero-ordered higher order ambisonic (HOA) coefficient, and one or more greater-than-zero-ordered HOA coefficients. The processor may be configured to obtain, based on the one or more greater-than-zero-ordered HOA coefficients, a virtual zero-ordered HOA coefficient. The processor may also be configured to obtain, based on the virtual HOA coefficient, one or more parameters from which to synthesize the one or more greater-than-zero-ordered HOA coefficients. The processor may further be configured to generate a bitstream that includes a first indication representative of the zero-ordered HOA coefficients, and a second indication representative of the one or more parameters.