US 12,294,844 B2
Sound collection system, sound collection method, and non-transitory storage medium
Keishi Matsunaga, Tokyo (JP)
Assigned to Audio-Technica Corporation, Tokyo (JP)
Filed by AUDIO-TECHNICA CORPORATION, Tokyo (JP)
Filed on Mar. 22, 2023, as Appl. No. 18/187,914.
Application 18/187,914 is a continuation of application No. PCT/JP2021/037733, filed on Oct. 12, 2021.
Claims priority of application No. 2020-187841 (JP), filed on Nov. 11, 2020.
Prior Publication US 2023/0247361 A1, Aug. 3, 2023
Int. Cl. H04R 5/04 (2006.01); H04R 3/00 (2006.01)
CPC H04R 5/04 (2013.01) [H04R 3/005 (2013.01); H04R 2430/20 (2013.01)] 13 Claims
OG exemplary drawing
 
12. A sound collection method comprising the steps of:
outputting a first signal obtained by emphasizing a sound signal based on sound coming from a direction within a first range, among a plurality of sound signals based on sound arriving at a plurality of microphones, more than sound signals based on sound coming from other directions;
detecting a direction of a sound source generating sound arriving at the plurality of microphones; and
outputting a second signal obtained by emphasizing a sound signal based on sound coming from a direction within a second range, among the plurality of sound signals more than sound signals, based on sound coming from other directions, if it is determined that a change angle per unit time of the direction of the sound source is equal to or greater than a threshold while the first signal is being output.