Patent AU-2010219353-B2 (AU)
Title: Apparatus and method for determining a plurality of local center of gravity frequencies of a spectrum of an audio signal
Inventor: SASCHA DISCH
IPC: G10L25/90
Filed: 2010-03-18
Granted: 2011-10-06
Abstract: (12) INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property Organization IN International Bureau (43) International Publication Date H(10) International Publication Number 7 October 2010 (07.10.2010) PCT W O 2010/112348 Al (51) International Patent Classification: (72) Inventors; and GiL 11/00 (2006.01) G1OL 19/02 (2006.01) (75) Inventors/Applicants (for US only): DISCH, Sascha GiL 11/04 (2006.01) [DE/DE]; Tumstrasse 7, 90763 Firth (DE). POPP, Har (21) International Application Number: ald [DE/DE]; Obermichelbacher Straf3e 18, 90587 PCT/EP2010/053574 Tuchenbach (DE). (22) International Filing Date: (74) Agents: ZINKLER, Franz et al.; P.O. Box 246, 82043 18 March 2010 (18.03.2010) Pullach (DE). (25) Filing Language: English (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (26) Publication Language: English AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, (30) Priority Data: DZ, EC, EE, EG, ES, Fl, GB, GD, GE, GH, GM, GT, 61/166,562 3 April 2009 (03.04.2009) US HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, 09011091.7 28 August 2009 (28.08.2009) EP KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, (71) Applicant (for all designated States except US): ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, FRAUNHOFER-GESELLSCHAFT ZUR NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, FORDERUNG DER ANGEWANDTEN SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, FORSCHUNG E.V. [DE/DE]; Hansastraf3e 27c, 80686 TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW. Miinchen (DE). (84) Designated States (unless otherwise indicated, for every kind of regional protection available): ARIPO (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, [Continued on next page] (54) Title: APPARATUS AND METHOD FOR DETERMINING A PLURALITY OF LOCAL CENTER OF GRAVITY FRE QUENCIES OF A SPECTRUM OF AN AUDIO SIGNAL (57) Abstract: An apparatus for determining a plurality of local center of gravity fre 100 quencies of a spectrum of an audio signal comprises an offset determiner, a frequency determiner and an iteration controller. The offset determiner determines an offset fre quency for each iteration start frequency of a plurality of iteration start frequencies based on the spectrum of the audio signal, wherein a number of discrete sample values 102 of the spectrum is larger than a number of iteration start frequencies. The frequency de terminer determines a new plurality of iteration start frequencies by increasing or reduc ffset ing each iteration start frequency of the plurality of iteration start frequencies by the cor 110 det responding determined offset frequency. The iteration controller provides the new plu F deemrality of iteration start frequencies to the offset determiner for further iteration or pro vides the plurality of local center of gravity frequencies, if a predefined termination con 112 dition is fulfilled. The plurality of local center of gravity frequencies can be utilized as a basis for generating a new plurality of iteration start frequencies. frequency 120 determiner iteration 130 controller W O 2 0 10 /1 1 2 3 4 8 A 1l llll|||11ll|||1lllllllllll 1 D l ID|||||||||||||||||||I||||||||||| ID||||||||||||||||||| ZW), Eurasian (AM, AZ, BY, KG, KZ, MD, RU, TJ, Published: TM), European (AT, BE, BG, CH, CY, CZ, DE, DK, EE' - with international search report (Art. 21(3)) ES, Fl, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).