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1. WO2022047361 - PLAYBACK TRANSITIONS

Publication Number WO/2022/047361
Publication Date 03.03.2022
International Application No. PCT/US2021/048380
International Filing Date 31.08.2021
IPC
H04R 27/00 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
27Public address systems
H04R 3/12 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
3Circuits for transducers
12for distributing signals to two or more loudspeakers
CPC
G01S 7/527
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
52of systems according to group G01S15/00
523Details of pulse systems
526Receivers
527Extracting wanted echo signals
G01S 7/539
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
52of systems according to group G01S15/00
539using analysis of echo signal for target characterisation; Target signature; Target cross-section
G10L 19/008
GPHYSICS
10MUSICAL INSTRUMENTS; ACOUSTICS
LSPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
19Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
008Multichannel audio signal coding or decoding using interchannel correlation to reduce redundancy, e.g. joint-stereo, intensity-coding or matrixing
H04R 2227/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
2227Details of public address [PA] systems covered by H04R27/00 but not provided for in any of its subgroups
005Audio distribution systems for home, i.e. multi-room use
H04R 2420/01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
2420Details of connection covered by H04R, not provided for in its groups
01Input selection or mixing for amplifiers or loudspeakers
H04R 2420/07
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
2420Details of connection covered by H04R, not provided for in its groups
07Applications of wireless loudspeakers or wireless microphones
Applicants
  • SONOS, INC. [US]/[US]
Inventors
  • JONES, Daniel
  • BANNON, Richard
  • HARWOOD, Jake
  • HERBST, Jonathan
  • SIA, Henry
Agents
  • URBAN, Benjamin M.
Priority Data
17/460,70830.08.2021US
63/072,88831.08.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) PLAYBACK TRANSITIONS
(FR) TRANSITIONS DE LECTURE
Abstract
(EN) An example involves detecting, during a time period by a receiving device, an audio signal comprising a superposition of a plurality of audio signals transmitted by a plurality of respective playback devices. The example further comprises determining a time-frequency representation of the audio signal and obtaining data associating playback devices with respective reference audio signals, each reference audio signal having a predefined time-frequency representation. The example further comprises, based on the time-frequency representation of the audio signal and the data, determining that the audio signal comprises a superposition of a first audio signal transmitted by a first playback device and a second audio signal transmitted by a second playback device.
(FR) Un exemple de la présente invention consiste en la détection, pendant une période de temps par un dispositif de réception, d'un signal audio comprenant une superposition d'une pluralité de signaux audio transmis par une pluralité de dispositifs de lecture respectifs. L'exemple comprend en outre la détermination d'une représentation temps-fréquence du signal audio et l'obtention de données associant des dispositifs de lecture à des signaux audio de référence respectifs, chaque signal audio de référence ayant une représentation temps-fréquence prédéfinie. L'exemple comprend en outre, sur la base de la représentation temps-fréquence du signal audio et des données, la détermination du fait que le signal audio comprend une superposition d'un premier signal audio transmis par un premier dispositif de lecture et d'un second signal audio transmis par un second dispositif de lecture.
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