Patent SG-11201806246U-A (SG)
Title: Apparatuses and methods for encoding or decoding a multi-channel audio signal using frame control synchronization
Inventor: FUCHS GUILLAUME
IPC: G10L19/022
Filed: 2017-01-20
Abstract: 1002 1023 - --4 1023 1020 1 S channel (e. g. L) ► g od channel (e. g. R) ► 1022—j ,- -- --- 1 1022 1000 1 1010 1\" segment i,. ? I 2 of blocks time-spectral 2' d segment multi-channel converter of blocks processor result sequence (e. g. M) 1021 1021 op ional (e. g. S ) 1025 resampled sequence (mid signal ) 1030 sp ctral-domain resampler optional (side-signal ) spectral-time converter alternatively: resampling before multi- channel processing 1031-- -1032 optional side-signal 1026 1022 mid-signal W O 20 17 / 1255 6 2 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 2017/125562 Al 27 July 2017 (27.07.2017) WIPO I PCT 11111111111111011101111111111101011111011101110111111111111111111011111111111110111111 core encoder (51) International Patent Classification: G10L 19/022 (2013.01) G10L 19/008 (2013.01) (21) International Application Number: PCT/EP2017/051212 (22) International Filing Date: 20 January 2017 (20.01.2017) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 16152450.9 22 January 2016 (22.01.2016) EP 16152453.3 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: FUCHS, Guillaume; Joseph-Otto-Kolb-Str. 31, 91088 Bubenreuth (DE). RAVELLI, Emmanuel; Ger- hart-Hauptmann-Str. 1, 91058 Erlangen (DE). MUL- TRUS, Markus; Etzlaubweg 7, 90469 Niirnberg (DE). SCHNELL, Markus; Labenwolfstr. 15, 90409 Niirnberg (DE). DOHLA, Stefan; Saidelsteig 61, 91058 Erlangen (DE). DIETZ, Martin; Deutschherrnstr. 37, 90429 Niirn- berg (DE). MARKOVIC, Goran; Aachener Str. 19, 90425 Niirnberg (DE). FOTOPOULOU, Eleni; Berckhauserstr. 33, 90409 Niirnberg (DE). BAYER, Stefan; Dortmunder Str. 14, 90425 Niirnberg (DE). JAGERS, Wolfgang; Kul- mbacher Str. 47, 91056 Erlangen (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, 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. [Continued on next page] (54) Title: APPARATUSES AND METHODS FOR ENCODING OR DECODING A MULTI-CHANNEL AUDIO SIGNAL US- ING FRAME CONTROL SYNCHRONIZATION 1040-- 2' d frame control is synchronized to 1' frame control Fig. 1 (57) : Encoding a multi-channel audio signal using a time-spectral converter for converting sequences of blocks of sampling values into sequences of blocks of spectral values; a multi-channel processor for applying a joint multi-channel processing to blocks of spectral values to obtain at least one result sequence of blocks; a spectral-time converter for converting the result se- quence of blocks of spectral values into a time domain representation comprising an output sequence of blocks of sampling values; and a core encoder for encoding the output sequence of blocks of sampling values to obtain an encoded multi-channel signal, wherein the core encoder operates with a first frame control, and wherein the time-spectral converter or the spectral-time converter operate with a second frame control being synchronized to the first frame control, wherein the start or end frame border is in a prede - termined relation to a start or end instant of an overlapping portion of a window used by the time-spectral converter. WO 2017/125562 All#111011101110101g010130HOHM0IM0IS (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))