Patent SG-11201808684T-A (SG)
Title: Audio encoder for encoding an audio signal, method for encoding an audio signal and computer program under consideration of a detected peak spectral region in an upper frequency band
Inventor: MULTRUS MARKUS
IPC: G10L19/26
Filed: 2017-04-06
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER (19) World Intellectual Property —, Organization 111111110111101110101011111 International Bureau ... .... ..Y1 2d (43) International Publication Date ........../ 19 October 2017(19.10.2017) WIPO I PCT THE PATENT COOPERATION TREATY (PCT) HO 111110111010 HE 111110010111110111110 1111 MI (10) International Publication Number WO 2017/178329 Al (51) (21) (22) (25) Filing Language: (26) Publication Language: (30) (71) Applicant: FRAUNHOFER-GESELLSCHAFT (72) International Patent Classification: (81) Designated States (unless otherwise indicated, for every G1OL 19/26 (2013.01) kind of national protection available): AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, International Application Number: BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, PCT/EP2017/058238 DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, International Filing Date: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, 6 April 2017 (06.04.2017) KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, English NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, English 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, Priority Data: ZA, ZM, ZW. 16164951.2 12 April 2016 (12.04.2016) EP (84) Designated States (unless otherwise indicated, for every ZUR kind of regional protection available): ARIPO (BW, GH, FORDERUNG DER ANGEWANDTEN FORSCHUNG GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, E.V. [DE/DE]; HansastraBe 27c, 80686 Miinchen (DE). TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, Inventors: MULTRUS, Markus; Etzlaubweg 7, 90469 TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, Nurnberg (DE). NEUKAM, Christian; WeiBgasse 24, 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, 90562 Kalchreuth (DE). SCHNELL, Markus; Labenwolf- SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, str. 15, 90409 Nfirnberg (DE). SCHUBERT, Benjamin; GW, KM, ML, MR, NE, SN, TD, TG). Zickstrasse 6, 90429 Nurnberg (DE). Agents: ZINKLER, Franz et al.; Schoppe, Zimmermann, Published: Stockeler, Zinkler, Schenk & Partner mbB, Radlkoferstr. 2, — with international search report (Art. 21(3)) 81373 Mfinchen (DE). = (74) = — Title: AUDIO 103 COMPUTER QUENCY BAND audio ENCODER FOR ENCODING PROGRAM UNDER I I e.g. 1 -1 1 1 LPC Itral CONSIDERATION ana l yz er signal band, AN I 1-----808 I shaping information for low band 812 AUDIO SIGNAL, METHOD FOR ENCODING AN AUDIO SIGNAL AND OF A DETECTED (57) nal 804 a and 8 806 14 shaper shaping upper information configured tected lower quency PEAK SPECTRAL REGION IN AN UPPER FRE- : An audio encoder for encoding an audio sig- having a lower frequency band and an upper frequency comprises: a detector (802) for detecting a peak spec- region in the upper frequency band of the audio signal; a (804) for shaping the lower frequency band using information for the lower band and for shaping the frequency band using at least a portion of the shaping for the lower band, wherein the shaper (804) is to additionally attenuate spectral values in the de- peak spectral region in the upper frequency band; and quantizer and coder stage (806) for quantizing a shaped frequency band and a shaped upper frequency band for entropy coding quantized spectral values from the lower frequency band and the shaped upper fre- band. (54) = = = = = 810 = detects detector peak spectral region in high band shaper shapes: - low band - high band - peak spectral region region = peak spectral 802 O shaped ------805 = 1-1 01 ei M GO IN 1-1 IN ,-1 © ei guantizer and coder stage encoded audio signal dig. 8 O