公开(公告)号：US10403294B2

公开(公告)日：2019-09-03

申请号：US16183063

申请日：2018-11-07

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008 ,  G10L19/16 ,  H04S3/00

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：US10249312B2

公开(公告)日：2019-04-02

申请号：US15266874

申请日：2016-09-15

Applicant: QUALCOMM Incorporated

Inventor： Moo Young Kim ,  Dipanjan Sen

IPC: H04S3/02 ,  H04S7/00 ,  G10L19/20 ,  G10L19/038 ,  G10L19/008 ,  G10L19/002 ,  H04S3/00

Abstract: A device for processing audio data obtains data representing quantized versions of a set of one or more spatial vectors. Each respective spatial vector of the set of spatial vectors corresponds to a respective audio signal of the set of audio signals. Each of the spatial vectors is in a Higher-Order Ambisonics (HOA) domain and is computed based on a set of loudspeaker locations. The device inverse quantizes the quantized versions of the spatial vectors.

公开(公告)号：US20190074020A1

公开(公告)日：2019-03-07

申请号：US16183063

申请日：2018-11-07

Applicant: QUALCOMM Incorporated

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

IPC: G10L19/008 ,  G10L19/16 ,  H04S3/00

CPC classification number: G10L19/008 ,  G10L19/167 ,  H04S3/008 ,  H04S2420/11

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：US20190042182A1

公开(公告)日：2019-02-07

申请号：US16148837

申请日：2018-10-01

Applicant: QUALCOMM Incorporated

Inventor： Shankar Thagadur Shivappa ,  Martin Morrell ,  S M Akramus Salehin ,  Dipanjan Sen

IPC: G06F3/16 ,  H04R5/02 ,  G06F3/01 ,  G06F3/0346 ,  H04S7/00 ,  G02B27/01

CPC classification number: G06F3/165 ,  G02B27/017 ,  G06F3/011 ,  G06F3/012 ,  G06F3/0346 ,  G06F3/16 ,  H04R5/02 ,  H04R2499/13 ,  H04S7/303 ,  H04S7/304 ,  H04S2400/11 ,  H04S2420/11

Abstract: In a particular aspect, a multimedia device is configured to compensate for navigational movement within a visual environment. The multimedia device includes a processor configured to generate a first version of a spatialized audio signal of a sound field in a first audio frame based on a first position within a visual environment. The processor is configured to generate a second version of the spatialized audio signal of the sound field in a second audio frame based on compensating for the speed of movement of the multimedia device that indicates the first position within the visual environment changed to a second position within the visual environment, being different than the speed of movement in changing from a first location of the sound field to a second location of the sound field.

公开(公告)号：US10070094B2

公开(公告)日：2018-09-04

申请号：US15290223

申请日：2016-10-11

Applicant: QUALCOMM Incorporated

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

IPC: H04R5/02 ,  H04N5/60 ,  H04S7/00 ,  G06F3/16 ,  G10L19/26 ,  G10L19/008

Abstract: Systems and techniques for rendering audio data are generally disclosed. An example device for rendering a higher order ambition (HOA) audio signal includes a memory configured to store the HOA audio signal, and one or more processors coupled to the memory. The one or more processors are configured to perform a loudness compensation process as part of generating an effect matrix. The one or more processors are further configured to render the HOA audio signal based on the effect matrix.

公开(公告)号：US09980074B2

公开(公告)日：2018-05-22

申请号：US14289477

申请日：2014-05-28

Applicant: QUALCOMM Incorporated

Inventor： Dipanjan Sen ,  Sang-Uk Ryu

IPC: G10L19/00 ,  G10L19/008 ,  G10L19/032 ,  H04S5/00 ,  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 determining quantization step sizes for compression of spatial components of a sound field. A device comprising one or more processors may be configured to perform the techniques. In other words, the one or more processors may be configured to determine a quantization step size to be used when compressing a spatial component of a sound field, where the spatial component generated by performing a vector based synthesis with respect to a plurality of spherical harmonic coefficients.

公开(公告)号：US09830905B2

公开(公告)日：2017-11-28

申请号：US14314022

申请日：2014-06-24

Applicant: QUALCOMM Incorporated

Inventor： Wenliang Lu ,  Dipanjan Sen

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

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

Abstract: A method for feature extraction by an electronic device is described. The method includes processing speech using a physiological cochlear model. The method also includes analyzing sections of an output of the physiological cochlear model. The method further includes extracting a place-based analysis vector and a time-based analysis vector for each section. The method additionally includes determining one or more features from each analysis vector.

公开(公告)号：US09754600B2

公开(公告)日：2017-09-05

申请号：US15290181

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 reusability of an index that determines a Huffman codebook used to code data associated with a vector in a spherical harmonics domain. The bitstream may comprise an indicator for whether to reuse, from a previous frame, at least one syntax element indicative of the index. The memory may be configured to store the bitstream.

公开(公告)号：US09736609B2

公开(公告)日：2017-08-15

申请号：US14174784

申请日：2014-02-06

Applicant: QUALCOMM Incorporated

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

IPC: H04S5/00 ,  H04S7/00

CPC classification number: H04S5/00 ,  H04S7/30 ,  H04S7/301 ,  H04S2400/11 ,  H04S2420/11

Abstract: In general, techniques are described for determining renderers used for rendering spherical harmonic coefficients to generate one or more loudspeaker signals. A device comprising one or more processors may perform the techniques. The one or more processors may be configured to determine a local speaker geometry of one or more speakers used for playback of spherical harmonic coefficients representative of a sound field, and configure the device to operate based on the local speaker geometry.

公开(公告)号：US09736606B2

公开(公告)日：2017-08-15

申请号：US14670074

申请日：2015-03-26

Applicant: QUALCOMM Incorporated

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

IPC: H04S3/00 ,  G10L19/008 ,  G11B20/10 ,  H04H20/89 ,  H04N21/439 ,  H04N21/233 ,  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 audio 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 a higher order ambisonic (HOA) representation of the audio object. The one or more processors may be configured to add a source tail to the HOA representation of the audio object by storing one or more spherical harmonic (SH) basis functions associated with the audio object to a buffer.