SG11201806241QA - Apparatus and method for estimating an inter-channel time difference - Google Patents
Apparatus and method for estimating an inter-channel time differenceInfo
- Publication number
- SG11201806241QA SG11201806241QA SG11201806241QA SG11201806241QA SG11201806241QA SG 11201806241Q A SG11201806241Q A SG 11201806241QA SG 11201806241Q A SG11201806241Q A SG 11201806241QA SG 11201806241Q A SG11201806241Q A SG 11201806241QA SG 11201806241Q A SG11201806241Q A SG 11201806241QA
- Authority
- SG
- Singapore
- Prior art keywords
- cross
- niirnberg
- channel signal
- spectrum
- international
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000001228 spectrum Methods 0.000 abstract 9
- 238000009499 grossing Methods 0.000 abstract 3
- 230000003595 spectral effect Effects 0.000 abstract 2
- 230000008520 organization Effects 0.000 abstract 1
Classifications
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/008—Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
- G10L19/022—Blocking, i.e. grouping of samples in time; Choice of analysis windows; Overlap factoring
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
- G10L19/04—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using predictive techniques
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
- G10L25/18—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters the extracted parameters being spectral information of each sub-band
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S3/00—Systems employing more than two channels, e.g. quadraphonic
- H04S3/008—Systems employing more than two channels, e.g. quadraphonic in which the audio signals are in digital form, i.e. employing more than two discrete digital channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/01—Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2400/00—Details of stereophonic systems covered by H04S but not provided for in its groups
- H04S2400/03—Aspects of down-mixing multi-channel audio to configurations with lower numbers of playback channels, e.g. 7.1 -> 5.1
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04S—STEREOPHONIC SYSTEMS
- H04S2420/00—Techniques used stereophonic systems covered by H04S but not provided for in its groups
- H04S2420/03—Application of parametric coding in stereophonic audio systems
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Multimedia (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Computational Linguistics (AREA)
- Health & Medical Sciences (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Human Computer Interaction (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
- Stereophonic System (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Control Of Eletrric Generators (AREA)
- Emergency Protection Circuit Devices (AREA)
- Financial Or Insurance-Related Operations Such As Payment And Settlement (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Stereo-Broadcasting Methods (AREA)
- Mobile Radio Communication Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 27 July 2017 (27.07.2017) WIPO I PCT (10) International Publication Number WO 2017/125563 Al 1111111111111101110111111111110101111101110111011111111111111011011111111111110111111 left/first channel signal second/right channel signal (51) International Patent Classification: G10L 19/008 (2013.01) GlOL 19/02 (2013.01) (21) International Application Number: PCT/EP2017/051214 (22) International Filing Date: 20 January 2017 (20.01.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16152453.3 22 January 2016 (22.01.2016) EP 16152450.9 22 January 2016 (22.01.2016) EP (71) Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE/DE]; HansastraBe 27c, 80686 Miinchen (DE). (72) Inventors: BAYER, Stefan; Dortmunder Str. 14, 90425 Niirnberg (DE). FOTOPOULOU, Eleni; Berckhauserstr. 33, 90409 Niirnberg (DE). MULTRUS, Markus; Etzlaub- weg 7, 90469 Niirnberg (DE). FUCHS, Guillaume; Joseph-Otto-Kolb-Str. 31, 91088 Bubenreuth (DE). RAV- ELLI, Emmanuel; Gerhart-Hauptmann-Str. 1, 91058 Er- langen (DE). SCHNELL, Markus; Labenwolfstr. 15, 90409 Niirnberg (DE). DOHLA, Stefan; Saidelsteig 61, 91058 Erlangen (DE). JAGERS, Wolfgang; Kulmbacher Str. 47, 91056 Erlangen (DE). DIETZ, Martin; Deutsch- herrnstr. 37, 90429 Niirnberg (DE). MARKOVIC, Goran; Aachener Str. 19, 90425 Niirnberg (DE). (74) Agents: ZINKLER, Franz et al.; Schoppe, Zimmermann, Stockeler, Zinkler, Schenk & Partner mbB, Radlkoferstr.2, 81373 Miinchen (DE). (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, [Continued on next page] (54) Title: APPARATUS AND METHOD FOR ESTIMATING AN INTER-CHANNEL TIME DIFFERENCE (57) : An apparatus for estimating an inter-channel time difference between a first channel signal and a second channel sig - nal, comprises: a calculator (1020) for calculating a cross- correla- tion spectrum for a time block from the first channel signal in the time block and the second channel signal in the time block; a spec time-spectral converter 150 (451) tral characteristic estimator (1010) for estimating a characteristic of a spectrum of the first channel signal or the second channel signal for the time block; a smoothing filter (1030) for smoothing the cross-correlation spectrum over time using the spectral character- istic to obtain a smoothed cross- correlation spectrum; and a pro- cessor (1040) for processing the smoothed cross- correlation spec- trum to obtain the inter-channel time difference. spectral character'stic estimator (noisiness/ onality/...) cross-correlation spectrum calculator 1020 (452) -- --- W O 20 17 / 1255 63 Al 030 cross-correlation 1010 (455) e. g. SFM spectrum (453, of current block 454) cross-correlation spectrum of last block smoothing filter smoothed cross-correlation spectrum 1040-- processor (456-459) I inter-channel time difference Fig. 10a WO 2017/125563 Al MIDEDIMOMOIDEIR010130HOMMOODEVOIS KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). Published: with international search report (Art. 21(3))
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP16152453 | 2016-01-22 | ||
| EP16152450 | 2016-01-22 | ||
| PCT/EP2017/051214 WO2017125563A1 (en) | 2016-01-22 | 2017-01-20 | Apparatus and method for estimating an inter-channel time difference |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SG11201806241QA true SG11201806241QA (en) | 2018-08-30 |
Family
ID=57838406
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG11201806216YA SG11201806216YA (en) | 2016-01-22 | 2017-01-20 | Apparatus and method for encoding or decoding a multi-channel signal using a broadband alignment parameter and a plurality of narrowband alignment parameters |
| SG11201806241QA SG11201806241QA (en) | 2016-01-22 | 2017-01-20 | Apparatus and method for estimating an inter-channel time difference |
| SG11201806246UA SG11201806246UA (en) | 2016-01-22 | 2017-01-20 | Apparatuses and methods for encoding or decoding a multi-channel audio signal using frame control synchronization |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG11201806216YA SG11201806216YA (en) | 2016-01-22 | 2017-01-20 | Apparatus and method for encoding or decoding a multi-channel signal using a broadband alignment parameter and a plurality of narrowband alignment parameters |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SG11201806246UA SG11201806246UA (en) | 2016-01-22 | 2017-01-20 | Apparatuses and methods for encoding or decoding a multi-channel audio signal using frame control synchronization |
Country Status (20)
| Country | Link |
|---|---|
| US (7) | US10535356B2 (en) |
| EP (5) | EP3503097B1 (en) |
| JP (10) | JP6626581B2 (en) |
| KR (4) | KR102083200B1 (en) |
| CN (6) | CN108885879B (en) |
| AU (5) | AU2017208575B2 (en) |
| BR (4) | BR112018014689A2 (en) |
| CA (4) | CA3011915C (en) |
| ES (5) | ES2965487T3 (en) |
| HK (1) | HK1244584B (en) |
| MX (4) | MX2018008887A (en) |
| MY (4) | MY189223A (en) |
| PL (4) | PL3405949T3 (en) |
| PT (3) | PT3405951T (en) |
| RU (4) | RU2711513C1 (en) |
| SG (3) | SG11201806216YA (en) |
| TR (1) | TR201906475T4 (en) |
| TW (4) | TWI629681B (en) |
| WO (4) | WO2017125563A1 (en) |
| ZA (3) | ZA201804625B (en) |
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| CN110459205B (en) * | 2019-09-24 | 2022-04-12 | 京东科技控股股份有限公司 | Speech recognition method and device, computer storage medium |
| CN110740416B (en) * | 2019-09-27 | 2021-04-06 | 广州励丰文化科技股份有限公司 | Audio signal processing method and device |
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| EP4226367A2 (en) | 2020-10-09 | 2023-08-16 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Apparatus, method, or computer program for processing an encoded audio scene using a parameter smoothing |
| TWI803998B (en) | 2020-10-09 | 2023-06-01 | 弗勞恩霍夫爾協會 | Apparatus, method, or computer program for processing an encoded audio scene using a parameter conversion |
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