Patent SG-11201909415T-A (SG)
Title: Apparatus for processing an input audio signal and corresponding method
Inventor: MABANDE EDWIN
IPC: H03G7/00
Filed: 2018-04-10
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization International Bureau (43) International Publication Date 18 October 2018 (18.10.2018) WIPO I PCT IiiimmolioloiollmonolomolimunomomovoimIE (10) International Publication Number WO 2018/188812 Al (51) International Patent Classification: H03G 7/00 (2006.01) (21) International Application Number: PCT/EP2018/025106 (22) International Filing Date: 10 April 2018 (10.04.2018) (25) Filing Language: English (26) Publication Language: English (30) Priority Data: 17166448.5 13 April 2017 (13.04.2017) EP (71) Applicant: FRAUNHOFER-GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG E.V. [DE/DE]; HansastraBe 27c, 80686 Mfinchen (DE). (72) Inventors: MABANDE, Edwin; WiesenstraBe 9, 91091 GroBenseebach (DE). KUCH, Fabian; Schfitzenweg 13, 91054 Erlangen (DE). KRATSCHMER, Michael; Er- langer Str. 60a, 91096 Mohrendorf (DE). MEIER, Michael; Abt-Hermann-Weg 4, 91086 Aurachtal (DE). NEUGEBAUER, Bernhard; EisenstraBe 31, 91054 Buck- enhof (DE). (74) Agent: STOCKELER, Ferdinand et al.; Schoppe, Zim- mermann, Stockeler, Zinkler, Schenk &, Partner mbB, Radlkoferstr. 2, 81373 Mfinchen (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, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, (54) Title: APPARATUS FOR PROCESSING AN INPUT AUDIO SIGNAL AND CORRESPONDING METHOD Fig. 3 (57) : An apparatus (1) for processing an input audio signal (100) comprises an evaluator (10) for evaluating a loudness of the input audio signal (100) to determine a loudness range (LRAin) and an actual loudness value. A calculator (11) determines a compressor transfer function based on the determined loudness range (LRAin), based on a target loudness range (LRAdes) and based on the determined actual loudness value. The calculator (11) further determines at least one loudness range control gain based on the determined compressor transfer function. An adjuster (12) provides an output audio signal (101) based on the input audio signal (100) and based on the at least one determined loudness range control gain. The calculator (11) is configured to determine the compressor transfer function such that a difference between a mean loudness (.L out ) of the output audio signal (101) [Continued on next page] WO 2018/188812 Al O II 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)) and a mean loudness of the input audio signal (100) is minimized A corresponding method is also provided.