CPC G01H 11/00 (2013.01) [G01H 1/06 (2013.01); G01H 11/02 (2013.01); G01S 3/802 (2013.01); H03H 9/02 (2013.01); H03H 17/02 (2013.01); H03H 17/0233 (2013.01); H04R 1/20 (2013.01); H04R 1/406 (2013.01); H04R 2410/01 (2013.01); H04R 2430/20 (2013.01)] | 20 Claims |
1. An acoustic sensor assembly comprising:
a non-directional acoustic sensor having a first directional pattern;
a plurality of directional acoustic sensors surrounding the non-directional acoustic sensor and comprising a plurality of resonators having different resonance frequencies from each other, each of the plurality of directional acoustic sensors having a second directional pattern; and
a processor configured to:
obtain output signals from the non-directional acoustic sensor and the plurality of directional acoustic sensors;
calculate an acoustic signal having directivity by combining each of the obtained output signals based on ratios of a signal level output by the non-directional acoustic sensor and signal levels output by each of the plurality of directional acoustic sensors; and
obtain sound surrounding the acoustic sensor assembly in multiple directions, using the calculated acoustic signal.
|