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1. WO2020205090 - DYNAMIC SPEAKER EQUALIZATION FOR ADAPTATION TO ROOM RESPONSE

Publication Number WO/2020/205090
Publication Date 08.10.2020
International Application No. PCT/US2020/019567
International Filing Date 25.02.2020
IPC
H04R 3/04 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
04for correcting frequency response
H04S 7/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS
7Indicating arrangements; Control arrangements, e.g. balance control
CPC
G10L 2021/02082
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0208Noise filtering
02082the noise being echo, reverberation of the speech
G10L 2021/02163
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0208Noise filtering
0216characterised by the method used for estimating noise
02161Number of inputs available containing the signal or the noise to be suppressed
02163Only one microphone
G10L 21/0232
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
21Processing of the speech or voice signal to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
02Speech enhancement, e.g. noise reduction or echo cancellation
0208Noise filtering
0216characterised by the method used for estimating noise
0232Processing in the frequency domain
H04R 3/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers ; , loudspeakers or microphones
04for correcting frequency response
H04S 7/301
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
7Indicating arrangements; Control arrangements, e.g. balance control
30Control circuits for electronic adaptation of the sound field
301Automatic calibration of stereophonic sound system, e.g. with test microphone
H04S 7/305
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
SSTEREOPHONIC SYSTEMS 
7Indicating arrangements; Control arrangements, e.g. balance control
30Control circuits for electronic adaptation of the sound field
305Electronic adaptation of stereophonic audio signals to reverberation of the listening space
Applicants
  • MICROSOFT TECHNOLOGY LICENSING, LLC [US]/[US]
Inventors
  • FORRESTER, Christopher Michael
  • JOYA, Omar
  • EKIN, Bradley Robert
Agents
  • MINHAS, Sandip S.
  • ADJEMIAN, Monica
  • BARKER, Doug
  • CHATTERJEE, Aaron C.
  • CHEN, Wei-Chen Nicholas
  • CHOI, Daniel
  • CHURNA, Timothy
  • DINH, Phong
  • EVANS, Patrick
  • GABRYJELSKI, Henry
  • GUPTA, Anand
  • HINOJOSA-SMITH, Brianna L.
  • HWANG, William C.
  • JARDINE, John S.
  • LEE, Sunah
  • LEMMON, Marcus
  • MARQUIS, Thomas
  • MEYERS, Jessica
  • ROPER, Brandon
  • SPELLMAN, Steven
  • SULLIVAN, Kevin
  • SWAIN, Cassandra T.
  • WALKER, Matt
  • WIGHT, Stephen A.
  • WISDOM, Gregg
  • WONG, Ellen
  • WONG, Thomas S.
  • ZHANG, Hannah
  • TRAN, Kimberly
Priority Data
16/375,79404.04.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) DYNAMIC SPEAKER EQUALIZATION FOR ADAPTATION TO ROOM RESPONSE
(FR) ÉGALISATION DYNAMIQUE DE HAUT-PARLEUR POUR S'ADAPTER À UNE RÉPONSE DE PIÈCE
Abstract
(EN)
Dynamic device speaker tuning for echo control includes detecting audio rendering from a speaker on a device; based at least on detecting the audio rendering, capturing, with a microphone on the device, an echo of the rendered audio; performing a Fourier Transform on the echo and the rendered audio; determining a real-time transfer function for at least one signature band; determining a difference between the real-time transfer function and a reference transfer function; and tuning the speaker for audio rendering, based at least on the difference between the real-time transfer function and the reference transfer function, by adjusting an audio amplifier equalization. For some examples, the signature band represents a wall echo or an alternative mounting option. For some examples, the echo is collected during intervals while the audio rendering is ongoing.
(FR)
L'invention concerne un accord de haut-parleur de dispositif dynamique pour une commande d'écho consistant : à détecter un rendu audio à partir d'un haut-parleur sur un dispositif ; sur la base au moins de la détection du rendu audio, à capturer, à l'aide d'un microphone sur le dispositif, un écho de l'audio rendu ; à réaliser une transformée de Fourier sur l'écho et l'audio rendu ; à déterminer une fonction de transfert en temps réel pour au moins une bande de signature ; à déterminer une différence entre la fonction de transfert en temps réel et une fonction de transfert de référence ; et à accorder le haut-parleur pour un rendu audio, sur la base au moins de la différence entre la fonction de transfert en temps réel et la fonction de transfert de référence, en réglant une égalisation d'amplificateur audio. Pour certains exemples, la bande de signature représente un écho de paroi ou une autre option de montage. Pour certains exemples, l'écho est collecté pendant des intervalles pendant que le rendu audio est en cours.
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