US 12,407,985 B2
Method for determining a direction of propagation of a sound source by creating sinusoidal signals from sound signals received by microphones
Olivier Thumerel, Nantes (FR); Yohann Simon, Saint Jean de Boiseau (FR); and Thierry Heeb, Sainte-Croix (CH)
Assigned to IMMERSIVE AUDIO TECHNOLOGIES FRANCE, Saint Herblain (FR)
Appl. No. 18/548,408
Filed by IMMERSIVE AUDIO TECHNOLOGIES FRANCE, Saint Herblain (FR)
PCT Filed Mar. 2, 2022, PCT No. PCT/EP2022/055329
§ 371(c)(1), (2) Date Aug. 30, 2023,
PCT Pub. No. WO2022/184800, PCT Pub. Date Sep. 9, 2022.
Claims priority of application No. 2102105 (FR), filed on Mar. 4, 2021.
Prior Publication US 2024/0137702 A1, Apr. 25, 2024
Prior Publication US 2024/0236573 A9, Jul. 11, 2024
Int. Cl. H04R 5/04 (2006.01); H04B 17/364 (2015.01); H04R 3/00 (2006.01)
CPC H04R 5/04 (2013.01) [H04B 17/364 (2015.01); H04R 3/005 (2013.01); H04R 2430/20 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method comprising:
determining a direction of at least one sound source using an audio system capturing by an array of microphones sound emitted by the at least one sound source, the determining comprising:
emitting the sound by way of the at least one sound source and recording sound signals received by the array of microphones,
performing with at least one processing device:
executing cross-correlations between the received sound signals in order to deduce relative times of arrival therefrom,
creating a sinusoidal function of time having a determined frequency and a phase offset dependent on the relative times of arrival,
computing to determine a direction value of the at least one sound source in a spatial reference frame defined by the array of microphones, using values computed from the sinusoidal function of time at input, and
presenting the direction value.