公开(公告)号：US09961467B2

公开(公告)日：2018-05-01

申请号：US15266895

申请日：2016-09-15

Applicant: QUALCOMM Incorporated

Inventor： Moo Young Kim ,  Dipanjan Sen

IPC: H04R5/02 ,  H04S3/02 ,  G10L19/008 ,  H04S7/00 ,  G10L19/16

CPC classification number: H04S3/02 ,  G10L19/008 ,  G10L19/167 ,  G10L19/173 ,  H04S7/308 ,  H04S2400/01 ,  H04S2420/11

Abstract: In one example, a method includes obtaining a representation of a multi-channel audio signal for a source loudspeaker configuration; obtaining a representation of a plurality of spatial positioning vectors (SPVs), in a Higher-Order Ambisonics (HOA) domain, that are based on a source rendering matrix, which is based on the loudspeaker configuration; and generating a HOA soundfield based on the multi-channel audio signal and the plurality of spatial positioning vectors.

公开(公告)号：US09883312B2

公开(公告)日：2018-01-30

申请号：US14289549

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Dipanjan Sen ,  Martin James Morrell

IPC: H04R5/00 ,  H04S5/00 ,  G10L19/008 ,  G06F17/16 ,  G10L19/06 ,  G10L25/18 ,  H04S7/00 ,  G10L19/002 ,  G10L19/038 ,  G10L19/02 ,  G10L19/16 ,  G10L19/20 ,  G10L19/00

CPC classification number: H04S5/005 ,  G06F17/16 ,  G10L19/002 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/038 ,  G10L19/06 ,  G10L19/167 ,  G10L19/20 ,  G10L25/18 ,  G10L2019/0001 ,  G10L2019/0005 ,  H04R2205/021 ,  H04S7/30 ,  H04S7/304 ,  H04S7/40 ,  H04S2400/01 ,  H04S2400/15 ,  H04S2420/01 ,  H04S2420/03 ,  H04S2420/11

Abstract: In general, techniques are described for obtaining one or more first vectors describing distinct components of a soundfield and one or more second vectors describing background components of the soundfield, both the one or more first vectors and the one or more second vectors generated at least by performing a transformation with respect to a plurality of spherical harmonic coefficients.

公开(公告)号：US09870778B2

公开(公告)日：2018-01-16

申请号：US15451087

申请日：2017-03-06

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Dipanjan Sen ,  Martin James Morrell

IPC: H04R5/00 ,  G10L19/008 ,  G10L19/16 ,  H04S3/00 ,  H04S3/02 ,  G06F17/00 ,  G10L19/00 ,  H04S7/00

CPC classification number: G10L19/008 ,  G10L19/167 ,  H04S3/008 ,  H04S3/02 ,  H04S7/30 ,  H04S7/301 ,  H04S2420/03 ,  H04S2420/11

Abstract: In general, techniques are described for obtaining audio rendering information in a bitstream. A device configured to render higher order ambisonic coefficients comprising a processor and a memory may perform the techniques. The processor may be configured to obtain sparseness information indicative of a sparseness of a matrix used to render the higher order ambisonic coefficients to a plurality of speaker feeds. The memory may be configured to store the sparseness information.

公开(公告)号：US09838819B2

公开(公告)日：2017-12-05

申请号：US14789961

申请日：2015-07-01

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Dipanjan Sen ,  Martin James Morrell

IPC: H04R5/00 ,  G10L19/00 ,  H04S5/00 ,  H04R5/04 ,  H04S3/00 ,  G10L19/008

CPC classification number: H04S5/00 ,  G10L19/008 ,  H04R5/04 ,  H04S3/008 ,  H04S2420/11

Abstract: In general, techniques are described for compression and decoding of audio data are generally disclosed. An example device for compressing audio data includes one or more processors configured to apply a decorrelation transform to ambient ambisonic coefficients to obtain a decorrelated representation of the ambient ambisonic coefficients, the ambient HOA coefficients having been extracted from a plurality of higher order ambisonic coefficients and representative of a background component of a soundfield 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.

公开(公告)号：US09769586B2

公开(公告)日：2017-09-19

申请号：US14289396

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Nils Günther Peters

IPC: G10L19/00 ,  H04S5/00 ,  G10L19/008 ,  G06F17/16 ,  G10L19/06 ,  G10L25/18 ,  H04S7/00 ,  G10L19/002 ,  G10L19/038 ,  G10L19/02 ,  G10L19/16 ,  G10L19/20

CPC classification number: H04S5/005 ,  G06F17/16 ,  G10L19/002 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/038 ,  G10L19/06 ,  G10L19/167 ,  G10L19/20 ,  G10L25/18 ,  G10L2019/0001 ,  G10L2019/0005 ,  H04R2205/021 ,  H04S7/30 ,  H04S7/304 ,  H04S7/40 ,  H04S2400/01 ,  H04S2400/15 ,  H04S2420/01 ,  H04S2420/03 ,  H04S2420/11

Abstract: In general, techniques are described for performing order reduction with respect to a plurality of spherical harmonic coefficients. In accordance with the techniques, a device comprising one or more processors may be configured to perform, based on a target bitrate, order reduction with respect to a plurality of spherical harmonic coefficients or decompositions thereof to generate reduced spherical harmonic coefficients or the reduced decompositions thereof, wherein the plurality of spherical harmonic coefficients represent a sound field.

公开(公告)号：US09761229B2

公开(公告)日：2017-09-12

申请号：US13844283

申请日：2013-03-15

Applicant: QUALCOMM Incorporated

Inventor： Pei Xiang ,  Dipanjan Sen

IPC: G10L19/00 ,  G10L19/008

CPC classification number: G10L19/00 ,  G10L19/008

Abstract: Systems, methods, and apparatus for grouping audio objects into clusters are described.

公开(公告)号：US09747911B2

公开(公告)日：2017-08-29

申请号：US15290206

申请日：2016-10-11

Applicant: QUALCOMM Incorporated

Inventor： Nils Günther Peters ,  Dipanjan Sen

IPC: G10L19/00 ,  G10L19/038 ,  G10L19/008 ,  G10L19/002 ,  G10L19/08 ,  H04S3/00 ,  H04S7/00 ,  H04R5/00 ,  G10L19/20

CPC classification number: G10L19/038 ,  G10L19/002 ,  G10L19/008 ,  G10L19/08 ,  G10L19/20 ,  G10L2019/0001 ,  H04R5/00 ,  H04R2499/15 ,  H04S3/002 ,  H04S7/30 ,  H04S2400/01 ,  H04S2420/11

Abstract: In general, techniques are described for indicating reuse of a syntax element indicating a vector quantization codebook used in compressing a vector. A device comprising a processor and a memory may perform the techniques. The processor may be configured to obtain a bitstream comprising a vector in a spherical harmonics domain. The bitstream may further comprise an indicator for whether to reuse, from a previous frame, a syntax element indicative of a vector quantization codebook used when compressing the vector. The memory may be configured to store the bitstream.

公开(公告)号：US09716959B2

公开(公告)日：2017-07-25

申请号：US14289265

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Nils Günther Peters

IPC: G10L19/00 ,  G10L21/00 ,  G10L21/04 ,  H04S5/00 ,  G10L19/008 ,  G06F17/16 ,  G10L19/06 ,  G10L25/18 ,  H04S7/00 ,  G10L19/002 ,  G10L19/038 ,  G10L19/02 ,  G10L19/16 ,  G10L19/20

CPC classification number: H04S5/005 ,  G06F17/16 ,  G10L19/002 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/038 ,  G10L19/06 ,  G10L19/167 ,  G10L19/20 ,  G10L25/18 ,  G10L2019/0001 ,  G10L2019/0005 ,  H04R2205/021 ,  H04S7/30 ,  H04S7/304 ,  H04S7/40 ,  H04S2400/01 ,  H04S2400/15 ,  H04S2420/01 ,  H04S2420/03 ,  H04S2420/11

Abstract: In general, techniques are described for compensating for error in decomposed representations of sound fields. In accordance with the techniques, a device comprising one or more processors may be configured to quantize one or more first vectors representative of one or more components of a sound field, and compensate for error introduced due to the quantization of the one or more first vectors in one or more second vectors that are also representative of the same one or more components of the sound field.

公开(公告)号：US09679555B2

公开(公告)日：2017-06-13

申请号：US14314019

申请日：2014-06-24

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Wenliang Lu

IPC: G10L15/02 ,  G10L25/00 ,  G10L25/69

CPC classification number: G10L15/02 ,  G10L25/00 ,  G10L25/69

Abstract: A method for measuring speech signal quality by an electronic device is described. The method includes obtaining a modified single-channel speech signal. The method also includes estimating multiple objective distortions based on the modified single-channel speech signal. The multiple objective distortions include at least one foreground distortion and at least one background distortion. The method further includes estimating a foreground quality and a background quality based on the multiple objective distortions. The method additionally includes estimating an overall quality based on the foreground quality and the background quality.

公开(公告)号：US09536531B2

公开(公告)日：2017-01-03

申请号：US14670029

申请日：2015-03-26

Applicant: QUALCOMM Incorporated

Inventor： Martin James Morrell ,  Pei Xiang ,  Richard Paul Walters ,  Nils Günther Peters ,  Dipanjan Sen

IPC: G10L19/00 ,  G10L19/12 ,  G10L15/04 ,  G10L19/008 ,  G06F3/0484 ,  G11B27/031

CPC classification number: H04S3/008 ,  G06F3/04842 ,  G10L19/008 ,  G11B20/10527 ,  G11B27/031 ,  H04H20/89 ,  H04N21/233 ,  H04N21/4392 ,  H04N21/4398

Abstract: In general, techniques are described for editing of higher-order ambisonic audio data. A device comprising a memory and one or more processors may be configured to perform the techniques. The memory may be configured to store spherical harmonic (SH) basis functions. The one or more processors may be configured to manipulate the SH basis functions associated with higher order ambisonics coefficients to alter a direction of an audio object represented by the higher order ambisonics coefficients.

Abstract translation: 一般来说，描述了用于编辑高阶ambisonic音频数据的技术。 包括存储器和一个或多个处理器的设备可以被配置为执行这些技术。 存储器可以被配置为存储球面谐波（SH）基函数。 一个或多个处理器可以被配置为操纵与较高阶的对数系数相关联的SH基函数，以改变由高阶有向系数表示的音频对象的方向。