US 9,813,830 B2
Automated equalization of microphones
Przemyslaw P. Maziewski, Gdansk (PL)
Assigned to Intel Corporation, Santa Clara, CA (US)
Appl. No. 15/125,666
Filed by Intel Corporation, Santa Clara, CA (US)
PCT Filed Jun. 3, 2014, PCT No. PCT/PL2014/050034
§ 371(c)(1), (2) Date Sep. 13, 2016,
PCT Pub. No. WO2015/187042, PCT Pub. Date Dec. 10, 2015.
Prior Publication US 2017/0006399 A1, Jan. 5, 2017
Int. Cl. H04R 3/04 (2006.01); H04R 29/00 (2006.01); H03G 5/16 (2006.01)
CPC H04R 29/004 (2013.01) [H04R 3/04 (2013.01); H03G 5/165 (2013.01); H04R 2430/03 (2013.01)] 27 Claims
OG exemplary drawing
 
9. One or more non-transitory computer readable media storing instructions executed by a processor to perform a sequence comprising:
measuring a frequency response of a microphone in a device under test;
measuring a frequency response of a reference microphone;
subtracting the frequency responses to derive a delta;
calculating a delta correction based on the frequency response of the reference microphone;
correcting the microphone under test using a filter designed based on the delta correction; and
adding the delta corrections of the reference microphone and microphone in the device under test to determine a delta correction for the filter.