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1. (WO2019050689) SPEAKER DISTORION REDUCTION
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Pub. No.: WO/2019/050689 International Application No.: PCT/US2018/047664
Publication Date: 14.03.2019 International Filing Date: 23.08.2018
IPC:
H03G 5/02 (2006.01) ,H03G 9/02 (2006.01) ,H04R 3/04 (2006.01) ,H03G 5/16 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
5
Tone control or bandwidth control in amplifiers
02
Manually-operated control
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
9
Combinations of two or more types of control, e.g. gain control and tone control
02
in untuned amplifiers
H ELECTRICITY
04
ELECTRIC COMMUNICATION TECHNIQUE
R
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3
Circuits for transducers
04
for correcting frequency response
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
5
Tone control or bandwidth control in amplifiers
16
Automatic control
Applicants:
LINDEMANN, Eric [US/US]; US (US)
HATAB, Ziad, Ramez [US/US]; US (US)
CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR LTD. [GB/GB]; 7b Nightingale Way Quartermile Edinburgh EH3 9EG, GB (AllExceptUS)
Inventors:
LINDEMANN, Eric; US
HATAB, Ziad, Ramez; US
Agent:
SMITH, Darren; US
PRATI, Danny; US
DARREN, Mclellan; US
MCLELLAN, Peter; US
LIN, Steven; US
Priority Data:
15/698,14207.09.2017US
Title (EN) SPEAKER DISTORION REDUCTION
(FR) RÉDUCTION DE DISTORSION DE HAUT-PARLEUR
Abstract:
(EN) A spectral tilt of an audio signal is used to determine whether a speaker will introduce perceptible distortion during playback of the audio signal. The spectral tilt may be indicated by determining a ratio between energy in a distortion-producing frequency band and energy in a distortion-masking frequency band. Based on the determined spectral tilt, the distortion-producing frequency band may be attenuated to reduce the distortion introduced by the speaker. Additionally, the distortion-masking frequency band may be amplified to reduce perceptibility of the distortion produced by the speaker.
(FR) Selon la présente invention, une inclinaison spectrale d'un signal audio est utilisée pour déterminer si un haut-parleur introduira une distorsion perceptible pendant la lecture du signal audio. L'inclinaison spectrale peut être indiquée par la détermination d'un rapport entre l'énergie dans une bande de fréquences productrice de distorsion et l'énergie dans une bande de fréquences de masquage de distorsion. Sur la base de l'inclinaison spectrale déterminée, la bande de fréquences productrice de distorsion peut être atténuée pour réduire la distorsion introduite par le haut-parleur. De plus, la bande de fréquences de masquage de distorsion peut être amplifiée pour réduire la perceptibilité de la distorsion produite par le haut-parleur.
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Designated States: 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, 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
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (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)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)