JP2016520864A5 - - Google Patents
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- JP2016520864A5 JP2016520864A5 JP2016509473A JP2016509473A JP2016520864A5 JP 2016520864 A5 JP2016520864 A5 JP 2016520864A5 JP 2016509473 A JP2016509473 A JP 2016509473A JP 2016509473 A JP2016509473 A JP 2016509473A JP 2016520864 A5 JP2016520864 A5 JP 2016520864A5
- Authority
- JP
- Japan
- Prior art keywords
- hoa
- hoa coefficient
- frame
- residual
- coefficient sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000000034 method Methods 0.000 claims 17
- 230000001174 ascending effect Effects 0.000 claims 4
- 230000003111 delayed effect Effects 0.000 claims 4
- 238000013139 quantization Methods 0.000 claims 4
- 230000006835 compression Effects 0.000 claims 3
- 238000007906 compression Methods 0.000 claims 3
- 230000006837 decompression Effects 0.000 claims 3
- 238000000354 decomposition reaction Methods 0.000 claims 2
- FHNINJWBTRXEBC-UHFFFAOYSA-N Sudan III Chemical compound OC1=CC=C2C=CC=CC2=C1N=NC(C=C1)=CC=C1N=NC1=CC=CC=C1 FHNINJWBTRXEBC-UHFFFAOYSA-N 0.000 claims 1
- 230000008447 perception Effects 0.000 claims 1
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP13305558.2 | 2013-04-29 | ||
| EP13305558.2A EP2800401A1 (en) | 2013-04-29 | 2013-04-29 | Method and Apparatus for compressing and decompressing a Higher Order Ambisonics representation |
| PCT/EP2014/058380 WO2014177455A1 (en) | 2013-04-29 | 2014-04-24 | Method and apparatus for compressing and decompressing a higher order ambisonics representation |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018158976A Division JP6606241B2 (ja) | 2013-04-29 | 2018-08-28 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2016520864A JP2016520864A (ja) | 2016-07-14 |
| JP2016520864A5 true JP2016520864A5 (enExample) | 2017-04-06 |
| JP6395811B2 JP6395811B2 (ja) | 2018-09-26 |
Family
ID=48607176
Family Applications (8)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2016509473A Active JP6395811B2 (ja) | 2013-04-29 | 2014-04-24 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2018158976A Active JP6606241B2 (ja) | 2013-04-29 | 2018-08-28 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2019190235A Active JP6818838B2 (ja) | 2013-04-29 | 2019-10-17 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2020218142A Active JP7023342B2 (ja) | 2013-04-29 | 2020-12-28 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2022017626A Active JP7270788B2 (ja) | 2013-04-29 | 2022-02-08 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2023071244A Active JP7511707B2 (ja) | 2013-04-29 | 2023-04-25 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2024101601A Active JP7717911B2 (ja) | 2013-04-29 | 2024-06-25 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2025123005A Pending JP2025157488A (ja) | 2013-04-29 | 2025-07-23 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
Family Applications After (7)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2018158976A Active JP6606241B2 (ja) | 2013-04-29 | 2018-08-28 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2019190235A Active JP6818838B2 (ja) | 2013-04-29 | 2019-10-17 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2020218142A Active JP7023342B2 (ja) | 2013-04-29 | 2020-12-28 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2022017626A Active JP7270788B2 (ja) | 2013-04-29 | 2022-02-08 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2023071244A Active JP7511707B2 (ja) | 2013-04-29 | 2023-04-25 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2024101601A Active JP7717911B2 (ja) | 2013-04-29 | 2024-06-25 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
| JP2025123005A Pending JP2025157488A (ja) | 2013-04-29 | 2025-07-23 | 高次アンビソニックス表現を圧縮および圧縮解除する方法および装置 |
Country Status (10)
| Country | Link |
|---|---|
| US (10) | US9736607B2 (enExample) |
| EP (6) | EP2800401A1 (enExample) |
| JP (8) | JP6395811B2 (enExample) |
| KR (6) | KR102377798B1 (enExample) |
| CN (5) | CN107293304B (enExample) |
| CA (8) | CA3190353A1 (enExample) |
| MX (6) | MX347283B (enExample) |
| MY (2) | MY176454A (enExample) |
| RU (1) | RU2668060C2 (enExample) |
| WO (1) | WO2014177455A1 (enExample) |
Families Citing this family (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9674587B2 (en) * | 2012-06-26 | 2017-06-06 | Sonos, Inc. | Systems and methods for networked music playback including remote add to queue |
| EP2743922A1 (en) | 2012-12-12 | 2014-06-18 | Thomson Licensing | Method and apparatus for compressing and decompressing a higher order ambisonics representation for a sound field |
| US9412385B2 (en) * | 2013-05-28 | 2016-08-09 | Qualcomm Incorporated | Performing spatial masking with respect to spherical harmonic coefficients |
| US9466305B2 (en) | 2013-05-29 | 2016-10-11 | Qualcomm Incorporated | Performing positional analysis to code spherical harmonic coefficients |
| US9716959B2 (en) | 2013-05-29 | 2017-07-25 | Qualcomm Incorporated | Compensating for error in decomposed representations of sound fields |
| EP2824661A1 (en) | 2013-07-11 | 2015-01-14 | Thomson Licensing | Method and Apparatus for generating from a coefficient domain representation of HOA signals a mixed spatial/coefficient domain representation of said HOA signals |
| KR20240116835A (ko) * | 2014-01-08 | 2024-07-30 | 돌비 인터네셔널 에이비 | 사운드 필드의 고차 앰비소닉스 표현을 코딩하기 위해 요구되는 사이드 정보의 코딩을 개선하기 위한 방법 및 장치 |
| US9922656B2 (en) * | 2014-01-30 | 2018-03-20 | Qualcomm Incorporated | Transitioning of ambient higher-order ambisonic coefficients |
| US9489955B2 (en) | 2014-01-30 | 2016-11-08 | Qualcomm Incorporated | Indicating frame parameter reusability for coding vectors |
| EP3120352B1 (en) | 2014-03-21 | 2019-05-01 | Dolby International AB | Method for compressing a higher order ambisonics (hoa) signal, method for decompressing a compressed hoa signal, apparatus for compressing a hoa signal, and apparatus for decompressing a compressed hoa signal |
| EP2922057A1 (en) | 2014-03-21 | 2015-09-23 | Thomson Licensing | Method for compressing a Higher Order Ambisonics (HOA) signal, method for decompressing a compressed HOA signal, apparatus for compressing a HOA signal, and apparatus for decompressing a compressed HOA signal |
| JP6243060B2 (ja) | 2014-03-21 | 2017-12-06 | ドルビー・インターナショナル・アーベー | 高次アンビソニックス（ｈｏａ）信号を圧縮する方法、圧縮されたｈｏａ信号を圧縮解除する方法、ｈｏａ信号を圧縮する装置および圧縮されたｈｏａ信号を圧縮解除する装置 |
| US10770087B2 (en) | 2014-05-16 | 2020-09-08 | Qualcomm Incorporated | Selecting codebooks for coding vectors decomposed from higher-order ambisonic audio signals |
| US9852737B2 (en) | 2014-05-16 | 2017-12-26 | Qualcomm Incorporated | Coding vectors decomposed from higher-order ambisonics audio signals |
| CN120032651A (zh) | 2014-06-27 | 2025-05-23 | 杜比国际公司 | 针对hoa数据帧表示的压缩确定表示非差分增益值所需的最小整数比特数的方法 |
| EP2960903A1 (en) | 2014-06-27 | 2015-12-30 | Thomson Licensing | Method and apparatus for determining for the compression of an HOA data frame representation a lowest integer number of bits required for representing non-differential gain values |
| KR102454747B1 (ko) | 2014-06-27 | 2022-10-17 | 돌비 인터네셔널 에이비 | Hoa 데이터 프레임 표현의 압축을 위해 비차분 이득 값들을 표현하는 데 필요하게 되는 비트들의 최저 정수 개수를 결정하는 장치 |
| US9794713B2 (en) | 2014-06-27 | 2017-10-17 | Dolby Laboratories Licensing Corporation | Coded HOA data frame representation that includes non-differential gain values associated with channel signals of specific ones of the dataframes of an HOA data frame representation |
| EP2963949A1 (en) | 2014-07-02 | 2016-01-06 | Thomson Licensing | Method and apparatus for decoding a compressed HOA representation, and method and apparatus for encoding a compressed HOA representation |
| KR102363275B1 (ko) | 2014-07-02 | 2022-02-16 | 돌비 인터네셔널 에이비 | Ｈｏａ 신호 표현의 부대역들 내의 우세 방향 신호들의 방향들의 인코딩/디코딩을 위한 방법 및 장치 |
| KR102433192B1 (ko) | 2014-07-02 | 2022-08-18 | 돌비 인터네셔널 에이비 | 압축된 ｈｏａ 표현을 디코딩하기 위한 방법 및 장치와 압축된 ｈｏａ 표현을 인코딩하기 위한 방법 및 장치 |
| EP2963948A1 (en) | 2014-07-02 | 2016-01-06 | Thomson Licensing | Method and apparatus for encoding/decoding of directions of dominant directional signals within subbands of a HOA signal representation |
| CN106471579B (zh) | 2014-07-02 | 2020-12-18 | 杜比国际公司 | 用于对hoa信号表示的子带内的主导方向信号的方向进行编码/解码的方法和装置 |
| US9736606B2 (en) * | 2014-08-01 | 2017-08-15 | Qualcomm Incorporated | Editing of higher-order ambisonic audio data |
| US9747910B2 (en) | 2014-09-26 | 2017-08-29 | Qualcomm Incorporated | Switching between predictive and non-predictive quantization techniques in a higher order ambisonics (HOA) framework |
| EP3007167A1 (en) | 2014-10-10 | 2016-04-13 | Thomson Licensing | Method and apparatus for low bit rate compression of a Higher Order Ambisonics HOA signal representation of a sound field |
| US12087311B2 (en) | 2015-07-30 | 2024-09-10 | Dolby Laboratories Licensing Corporation | Method and apparatus for encoding and decoding an HOA representation |
| EP3739578A1 (en) | 2015-07-30 | 2020-11-18 | Dolby International AB | Method and apparatus for generating from an hoa signal representation a mezzanine hoa signal representation |
| WO2017036609A1 (en) * | 2015-08-31 | 2017-03-09 | Dolby International Ab | Method for frame-wise combined decoding and rendering of a compressed hoa signal and apparatus for frame-wise combined decoding and rendering of a compressed hoa signal |
| US9881628B2 (en) * | 2016-01-05 | 2018-01-30 | Qualcomm Incorporated | Mixed domain coding of audio |
| EP3338462B1 (en) * | 2016-03-15 | 2019-08-28 | Fraunhofer Gesellschaft zur Förderung der Angewand | Apparatus, method or computer program for generating a sound field description |
| US10332530B2 (en) | 2017-01-27 | 2019-06-25 | Google Llc | Coding of a soundfield representation |
| JP6811312B2 (ja) | 2017-05-01 | 2021-01-13 | パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ | 符号化装置及び符号化方法 |
| US10405126B2 (en) * | 2017-06-30 | 2019-09-03 | Qualcomm Incorporated | Mixed-order ambisonics (MOA) audio data for computer-mediated reality systems |
| EP3818730A4 (en) * | 2018-07-03 | 2022-08-31 | Nokia Technologies Oy | Energy-ratio signalling and synthesis |
| CN110113119A (zh) * | 2019-04-26 | 2019-08-09 | 国家无线电监测中心 | 一种基于人工智能算法的无线信道建模方法 |
| CN114582357B (zh) * | 2020-11-30 | 2025-09-12 | 华为技术有限公司 | 一种音频编解码方法和装置 |
| US11743670B2 (en) | 2020-12-18 | 2023-08-29 | Qualcomm Incorporated | Correlation-based rendering with multiple distributed streams accounting for an occlusion for six degree of freedom applications |
| CN115938388A (zh) * | 2021-05-31 | 2023-04-07 | 华为技术有限公司 | 一种三维音频信号的处理方法和装置 |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5757927A (en) * | 1992-03-02 | 1998-05-26 | Trifield Productions Ltd. | Surround sound apparatus |
| US5956674A (en) | 1995-12-01 | 1999-09-21 | Digital Theater Systems, Inc. | Multi-channel predictive subband audio coder using psychoacoustic adaptive bit allocation in frequency, time and over the multiple channels |
| JP3700254B2 (ja) * | 1996-05-31 | 2005-09-28 | 日本ビクター株式会社 | 映像音声再生装置 |
| AUPP272598A0 (en) * | 1998-03-31 | 1998-04-23 | Lake Dsp Pty Limited | Wavelet conversion of 3-d audio signals |
| US6931370B1 (en) * | 1999-11-02 | 2005-08-16 | Digital Theater Systems, Inc. | System and method for providing interactive audio in a multi-channel audio environment |
| CN1279511C (zh) * | 2001-04-13 | 2006-10-11 | 多尔拜实验特许公司 | 一种时间标度和/或音调偏移一个音频信号的方法 |
| AUPR647501A0 (en) * | 2001-07-19 | 2001-08-09 | Vast Audio Pty Ltd | Recording a three dimensional auditory scene and reproducing it for the individual listener |
| EP1489599B1 (en) * | 2002-04-26 | 2016-05-11 | Panasonic Intellectual Property Corporation of America | Coding device and decoding device |
| US7081883B2 (en) * | 2002-05-14 | 2006-07-25 | Michael Changcheng Chen | Low-profile multi-channel input device |
| CN1677490A (zh) | 2004-04-01 | 2005-10-05 | 北京宫羽数字技术有限责任公司 | 一种增强音频编解码装置及方法 |
| KR101339854B1 (ko) * | 2006-03-15 | 2014-02-06 | 오렌지 | 주 성분 분석에 의해 다중채널 오디오 신호를 인코딩하기 위한 장치 및 방법 |
| EP1841284A1 (en) * | 2006-03-29 | 2007-10-03 | Phonak AG | Hearing instrument for storing encoded audio data, method of operating and manufacturing thereof |
| EP2094032A1 (en) * | 2008-02-19 | 2009-08-26 | Deutsche Thomson OHG | Audio signal, method and apparatus for encoding or transmitting the same and method and apparatus for processing the same |
| EP2205007B1 (en) * | 2008-12-30 | 2019-01-09 | Dolby International AB | Method and apparatus for three-dimensional acoustic field encoding and optimal reconstruction |
| EP2645367B1 (en) * | 2009-02-16 | 2019-11-20 | Electronics and Telecommunications Research Institute | Encoding/decoding method for audio signals using adaptive sinusoidal coding and apparatus thereof |
| KR101795015B1 (ko) * | 2010-03-26 | 2017-11-07 | 돌비 인터네셔널 에이비 | 오디오 재생을 위한 오디오 사운드필드 표현을 디코딩하는 방법 및 장치 |
| EP2450880A1 (en) * | 2010-11-05 | 2012-05-09 | Thomson Licensing | Data structure for Higher Order Ambisonics audio data |
| EP2469741A1 (en) * | 2010-12-21 | 2012-06-27 | Thomson Licensing | Method and apparatus for encoding and decoding successive frames of an ambisonics representation of a 2- or 3-dimensional sound field |
| EP2665208A1 (en) | 2012-05-14 | 2013-11-20 | Thomson Licensing | Method and apparatus for compressing and decompressing a Higher Order Ambisonics signal representation |
| CN102903366A (zh) * | 2012-09-18 | 2013-01-30 | 重庆大学 | 一种基于g729语音压缩编码算法的dsp优化方法 |
| EP2743922A1 (en) | 2012-12-12 | 2014-06-18 | Thomson Licensing | Method and apparatus for compressing and decompressing a higher order ambisonics representation for a sound field |
| EP2765791A1 (en) | 2013-02-08 | 2014-08-13 | Thomson Licensing | Method and apparatus for determining directions of uncorrelated sound sources in a higher order ambisonics representation of a sound field |
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2013
- 2013-04-29 EP EP13305558.2A patent/EP2800401A1/en not_active Withdrawn
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2014
- 2014-04-24 KR KR1020217008387A patent/KR102377798B1/ko active Active
- 2014-04-24 CA CA3190353A patent/CA3190353A1/en active Pending
- 2014-04-24 MX MX2015015016A patent/MX347283B/es active IP Right Grant
- 2014-04-24 KR KR1020227030177A patent/KR102672762B1/ko active Active
- 2014-04-24 CA CA3168901A patent/CA3168901C/en active Active
- 2014-04-24 JP JP2016509473A patent/JP6395811B2/ja active Active
- 2014-04-24 EP EP19190807.8A patent/EP3598779B1/en active Active
- 2014-04-24 CA CA3190346A patent/CA3190346A1/en active Pending
- 2014-04-24 EP EP17169936.6A patent/EP3232687B1/en active Active
- 2014-04-24 WO PCT/EP2014/058380 patent/WO2014177455A1/en not_active Ceased
- 2014-04-24 US US14/787,978 patent/US9736607B2/en active Active
- 2014-04-24 MX MX2017005102A patent/MX384230B/es unknown
- 2014-04-24 EP EP21190296.0A patent/EP3926984B1/en active Active
- 2014-04-24 CN CN201710583301.5A patent/CN107293304B/zh active Active
- 2014-04-24 EP EP24203714.1A patent/EP4462430A3/en active Pending
- 2014-04-24 CA CA2907595A patent/CA2907595C/en active Active
- 2014-04-24 CA CA3110057A patent/CA3110057C/en active Active
- 2014-04-24 CA CA3168916A patent/CA3168916C/en active Active
- 2014-04-24 CN CN201480023877.0A patent/CN105144752B/zh active Active
- 2014-04-24 EP EP14723023.9A patent/EP2992689B1/en active Active
- 2014-04-24 KR KR1020247018485A patent/KR102882646B1/ko active Active
- 2014-04-24 CN CN201710583292.XA patent/CN107180639B/zh active Active
- 2014-04-24 CN CN201710583291.5A patent/CN107146627B/zh active Active
- 2014-04-24 CA CA3168906A patent/CA3168906C/en active Active
- 2014-04-24 KR KR1020257036863A patent/KR20250161668A/ko active Pending
- 2014-04-24 KR KR1020227009114A patent/KR102440104B1/ko active Active
- 2014-04-24 MY MYPI2015703265A patent/MY176454A/en unknown
- 2014-04-24 KR KR1020157030836A patent/KR102232486B1/ko active Active
- 2014-04-24 RU RU2015150988A patent/RU2668060C2/ru active
- 2014-04-24 CA CA3168921A patent/CA3168921C/en active Active
- 2014-04-24 CN CN201710583285.XA patent/CN107146626B/zh active Active
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2015
- 2015-10-27 MX MX2022012179A patent/MX2022012179A/es unknown
- 2015-10-27 MX MX2022012186A patent/MX2022012186A/es unknown
- 2015-10-27 MX MX2020002786A patent/MX2020002786A/es unknown
- 2015-10-27 MX MX2022012180A patent/MX2022012180A/es unknown
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2017
- 2017-07-14 US US15/650,674 patent/US9913063B2/en active Active
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2018
- 2018-01-22 US US15/876,442 patent/US10264382B2/en active Active
- 2018-08-28 JP JP2018158976A patent/JP6606241B2/ja active Active
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2019
- 2019-01-11 MY MYPI2019000036A patent/MY195690A/en unknown
- 2019-04-09 US US16/379,091 patent/US10623878B2/en active Active
- 2019-10-17 JP JP2019190235A patent/JP6818838B2/ja active Active
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2020
- 2020-04-06 US US16/841,203 patent/US10999688B2/en active Active
- 2020-12-28 JP JP2020218142A patent/JP7023342B2/ja active Active
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2021
- 2021-04-29 US US17/244,746 patent/US11284210B2/en active Active
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2022
- 2022-02-08 JP JP2022017626A patent/JP7270788B2/ja active Active
- 2022-03-21 US US17/700,228 patent/US11758344B2/en active Active
- 2022-03-21 US US17/700,390 patent/US11895477B2/en active Active
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2023
- 2023-04-25 JP JP2023071244A patent/JP7511707B2/ja active Active
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2024
- 2024-02-02 US US18/431,580 patent/US12317055B2/en active Active
- 2024-06-25 JP JP2024101601A patent/JP7717911B2/ja active Active
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2025
- 2025-05-21 US US19/214,917 patent/US20250380100A1/en active Pending
- 2025-07-23 JP JP2025123005A patent/JP2025157488A/ja active Pending
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