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1. WO2020197737 - SYSTEMS, DEVICES, AND METHODS FOR SYNCHRONIZING AUDIO

Publication Number WO/2020/197737
Publication Date 01.10.2020
International Application No. PCT/US2020/021228
International Filing Date 05.03.2020
IPC
G11B 20/10 2006.01
GPHYSICS
11INFORMATION STORAGE
BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
20Signal processing not specific to the method of recording or reproducing; Circuits therefor
10Digital recording or reproducing
H04N 5/073 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
5Details of television systems
04Synchronising
06Generation of synchronising signals
067Arrangements or circuits at the transmitter end
073for mutually locking plural sources of synchronising signals, e.g. studios or relay stations
H04N 21/233 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
233Processing of audio elementary streams
H04N 21/242 2011.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
21Selective content distribution, e.g. interactive television or video on demand
20Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
23Processing of content or additional data; Elementary server operations; Server middleware
242Synchronization processes, e.g. processing of PCR
CPC
G10L 21/055
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
04Time compression or expansion
055for synchronising with other signals, e.g. video signals
H04L 65/601
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
65Network arrangements or protocols for real-time communications
60Media handling, encoding, streaming or conversion
601Media manipulation, adaptation or conversion
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
H04R 5/04
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
5Stereophonic arrangements
04Circuit arrangements, ; e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments
Applicants
  • CLEAR PEAKS LLC [US]/[US]
Inventors
  • GOSSARD, Stone
  • BUNDLIE, Mike
  • TESANOVIC, Vladimir
  • LEVINE, David R.
Agents
  • RICHTER, Cole B.
Priority Data
16/362,22022.03.2019US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) SYSTEMS, DEVICES, AND METHODS FOR SYNCHRONIZING AUDIO
(FR) SYSTÈMES, DISPOSITIFS, ET PROCÉDÉS POUR SYNCHRONISER DE L'AUDIO
Abstract
(EN)
Disclosed herein are new techniques carried out by a computing system for determining delays of various components of an audio system to allow for accurate correction of these delays, which may improve the audio quality of live performances for listeners who hear audio reproduced by loudspeakers at live performance venues. In one implementation the computing system, which may comprise a transmitter device and one or more receiver devices, may be configured to perform functions, including receiving a first audio signal, receiving, via an audio input interface of the receiver, a second audio signal, and determining, based on the first audio signal and the second audio signal, an audio delay that is associated with the second audio signal. The computing system may be configured to perform further functions, including based on a determined cross-correlation between a downsampled audio signal and a filtered second audio signal, determining the audio signal delay.
(FR)
L'invention concerne de nouvelles techniques mises en œuvre par un système informatique permettant de déterminer des retards de divers composants d'un système audio afin de permettre une correction précise de ces retards, ce qui peut améliorer la qualité audio des représentations en direct pour des auditeurs qui entendent des sons reproduits par des haut-parleurs au niveau de lieux de représentations en direct. Dans un mode de réalisation, le système informatique, qui peut comprendre un dispositif émetteur et un ou plusieurs dispositifs récepteurs, peut être configuré pour exécuter des fonctions, comprenant la réception d'un premier signal audio, la réception, par l'intermédiaire d'une interface d'entrée audio du récepteur, d'un second signal audio, et la détermination, sur la base du premier signal audio et du second signal audio, d'un retard audio qui est associé au second signal audio. Le système informatique peut être configuré pour effectuer d'autres fonctions, comprenant, sur la base d'une corrélation croisée déterminée entre un signal audio sous-échantillonné et un second signal audio filtré, la détermination du retard de signal audio.
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