US 12,089,032 B1
Estimating room acoustic material properties
Prateek Murgai, Palo Alto, CA (US); and Jonathan D. Sheaffer, San Jose, CA (US)
Assigned to Apple Inc., Cupertino, CA (US)
Filed by Apple Inc., Cupertino, CA (US)
Filed on May 5, 2021, as Appl. No. 17/308,778.
Claims priority of provisional application 63/059,751, filed on Jul. 31, 2020.
Int. Cl. G01H 7/00 (2006.01); G10L 21/0216 (2013.01); H04R 3/00 (2006.01); H04S 7/00 (2006.01)
CPC H04S 7/305 (2013.01) [G01H 7/00 (2013.01); G10L 21/0216 (2013.01); H04R 3/005 (2013.01); G10L 2021/02166 (2013.01); H04R 2203/12 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method, comprising:
forming, from a plurality of microphone signals, a directional sound beam in a physical environment;
determining directional decay of acoustic energy measured through the directional sound beam; and
determining at least one room surface acoustic property of the physical environment based on mapping the directional decay of the acoustic energy to the physical environment, wherein the at least one room surface acoustic property is to be applied to a virtual sound source to render the virtual sound source to be perceived to be emanating in the physical environment.