SG11201806256SA - Apparatus and method for mdct m/s stereo with global ild with improved mid/side decision - Google Patents

Apparatus and method for mdct m/s stereo with global ild with improved mid/side decision

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Publication number
SG11201806256SA
SG11201806256SA SG11201806256SA SG11201806256SA SG11201806256SA SG 11201806256S A SG11201806256S A SG 11201806256SA SG 11201806256S A SG11201806256S A SG 11201806256SA SG 11201806256S A SG11201806256S A SG 11201806256SA SG 11201806256S A SG11201806256S A SG 11201806256SA
Authority
SG
Singapore
Prior art keywords
channel
audio signal
signal
normalized
spectral band
Prior art date
Application number
SG11201806256SA
Inventor
Emmanuel Ravelli
Markus Schnell
Stefan Döhla
Wolfgang Jägers
Martin Dietz
Christian Helmrich
Goran Markovic
Eleni Fotopoulou
Markus Multrus
Stefan Bayer
Guillaume Fuchs
Jürgen Herre
Original Assignee
Fraunhofer Ges Forschung
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fraunhofer Ges Forschung filed Critical Fraunhofer Ges Forschung
Publication of SG11201806256SA publication Critical patent/SG11201806256SA/en

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/03—Spectral prediction for preventing pre-echo; Temporary noise shaping [TNS], e.g. in MPEG2 or MPEG4
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/032—Quantisation or dequantisation of spectral components
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0204—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 using subband decomposition
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/0212—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 using orthogonal transformation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; 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
    • G10L19/16—Vocoder architecture
    • G10L19/18—Vocoders using multiple modes
    • G10L19/22—Mode decision, i.e. based on audio signal content versus external parameters

Abstract

120 first channel and second channel of audio input signal 11. encoding unit normalizer normalized audio signal encoded audio signal Fig. - 11 W O 20 17 / 1255 44 Al (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (10) International Publication Number (43) International Publication Date WO 2017/125544 Al 27 July 2017 (27.07.2017) WIPO I PCT 111111111111110111011111111111010111110111011101111111111111111111111111111111110111111 (51) International Patent Classification: GlOL 19/008 (2013.01) G1 0L 19/02 (2013.01) G1 0L 19/22 (2013.01) (21) International Application Number: PCT/EP2017/051177 (22) International Filing Date: 20 January 2017 (20.01.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16152457.4 22 January 2016 (22.01.2016) EP 16152454.1 22 January 2016 (22.01.2016) EP 16199895.0 21 November 2016 (21.11.2016) EP (71) Applicants: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE/DE]; HansastraBe 27c, 80686 Miinchen (DE). FRIEDRICH-ALEXANDER-UNIVERSITAET ER- LANGEN-NUERNBERG [DE/DE] ; Schlossplatz 4, 91054 Erlangen (DE). (72) Inventors: RAVELLI, Emmanuel; Donato-Polli-Str. 58, 91056 Erlangen (DE). SCHNELL, Markus; Labenwolfstr. 15, 90409 Niimberg (DE). DOHLA, Stefan; Saidelsteig 61, 91058 Erlangen (DE). JAGERS, Wolfgang; Kul- mbacher StraBe 47, 91056 Erlangen (DE). DIETZ, Mar- tin; DeutschherrnstraBe 37, 90429 Niimberg (DE). HELMRICH, Christian; Fraunhoferstr. 21, 10587 Berlin (DE). MARKOVIC, Goran; Aachener StraBe 19, 90425 Niimberg (DE). FOTOPOULOU, Eleni; Berckhauserstr. 33, 90409 Niimberg (DE). MULTRUS, Markus; Etzlaub- weg 7, 90469 Niirnberg (DE). BAYER, Stefan; Dortmun- der Strasse 14, 90425 Niimberg (DE). FUCHS, Guil- laume; Joseph-Otto-Kolb-Str. 31, 91088 Bubenreuth (DE). HERRE, Jurgen; Rathsberger Str. 10a, 91054 Erlangen (DE). (74) Agents: SCHAIRER, Oliver et al.; Schoppe, Zimmer- maim, 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, 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). [Continued on next page] (54) Title: APPARATUS AND METHOD FOR MDCT M/S STEREO WITH GLOBAL ILD WITH IMPROVED MID/SIDE DE- CISION (57) : Fig. illustrates an apparatus for encoding a first channel and a second channel of an audio input signal comprising two or more channels to obtain an encoded audio signal according to an embodiment. The apparatus comprises a normalizer (110) configured to determine a normalization value for the audio input signal depending on the first channel of the audio input signal and depending on the second channel of the audio input signal, wherein the normalizer (110) is configured to determine a first channel and a second channel of a normalized audio signal by modifying, depending on the normalization value, at least one of the first channel and the second channel of the audio input signal. Moreover, the apparatus comprises an encoding unit (120) being con- figured to generate a processed audio signal having a first channel and a second channel, such that one or more spectral bands of the first channel of the processed audio signal are one or more spectral bands of the first channel of the normalized audio signal, such that one or more spectral bands of the second channel of the processed audio signal are one or more spectral bands of the second channel of the normalized audio signal, such that at least one spectral band of the first channel of the processed audio signal is a spectral band of a mid signal depending on a spectral band of the first channel of the normalized audio signal and depending on a spectral band of the second channel of the normalized audio signal, and such that at least one spectral band of the second channel of the processed audio signal is a spectral band of a side signal depending on a spectral band of the first channel of the normalized au - dio signal and depending on a spectral band of the second channel of the normalized audio signal. The encoding unit (120) is con- figured to encode the processed audio signal to obtain the encoded audio signal. WO 2017/125544 Al 1#11101M011010112010EMOMOHOVEM10011111111111110110111111 Published: — before the expiration of the time limit for amending the — with international search report (Art. 21(3)) claims and to be republished in the event of receipt of amendments (Rule 48.2(h))
SG11201806256SA 2016-01-22 2017-01-20 Apparatus and method for mdct m/s stereo with global ild with improved mid/side decision SG11201806256SA (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
EP16152457 2016-01-22
EP16152454 2016-01-22
EP16199895 2016-11-21
PCT/EP2017/051177 WO2017125544A1 (en) 2016-01-22 2017-01-20 Apparatus and method for mdct m/s stereo with global ild with improved mid/side decision

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US (2) US11842742B2 (en)
EP (2) EP3405950B1 (en)
JP (3) JP6864378B2 (en)
KR (1) KR102230668B1 (en)
CN (2) CN109074812B (en)
AU (1) AU2017208561B2 (en)
BR (1) BR112018014813A2 (en)
CA (1) CA3011883C (en)
ES (1) ES2932053T3 (en)
FI (1) FI3405950T3 (en)
MX (1) MX2018008886A (en)
MY (1) MY188905A (en)
PL (1) PL3405950T3 (en)
RU (1) RU2713613C1 (en)
SG (1) SG11201806256SA (en)
TW (1) TWI669704B (en)
WO (1) WO2017125544A1 (en)
ZA (1) ZA201804866B (en)

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CN117542365A (en) 2024-02-09
EP4123645A1 (en) 2023-01-25
TWI669704B (en) 2019-08-21
JP6864378B2 (en) 2021-04-28
MX2018008886A (en) 2018-11-09
JP2019506633A (en) 2019-03-07
CN109074812B (en) 2023-11-17
US20240071395A1 (en) 2024-02-29
MY188905A (en) 2022-01-13
US20180330740A1 (en) 2018-11-15
TW201732780A (en) 2017-09-16
KR102230668B1 (en) 2021-03-22
KR20180103102A (en) 2018-09-18
RU2713613C1 (en) 2020-02-05
AU2017208561B2 (en) 2020-04-16
JP2023109851A (en) 2023-08-08
AU2017208561A1 (en) 2018-08-09
JP2021119383A (en) 2021-08-12
US11842742B2 (en) 2023-12-12
JP7280306B2 (en) 2023-05-23
EP3405950B1 (en) 2022-09-28
ES2932053T3 (en) 2023-01-09
CN109074812A (en) 2018-12-21
CA3011883C (en) 2020-10-27
ZA201804866B (en) 2019-04-24
FI3405950T3 (en) 2022-12-15
CA3011883A1 (en) 2017-07-27
BR112018014813A2 (en) 2018-12-18
EP3405950A1 (en) 2018-11-28
WO2017125544A1 (en) 2017-07-27
PL3405950T3 (en) 2023-01-30

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