US 9,813,833 B1
Method and apparatus for output signal equalization between microphones
Sampo Vesa, Helsinki (FI)
Assigned to Nokia Technologies Oy, Espoo (FI)
Filed by Nokia Technologies Oy, Espoo (FI)
Filed on Oct. 14, 2016, as Appl. No. 15/294,304.
Int. Cl. H04R 3/04 (2006.01); H04R 29/00 (2006.01)
CPC H04R 29/006 (2013.01) [H04R 3/04 (2013.01); H04R 2430/03 (2013.01)] 20 Claims
OG exemplary drawing
 
9. An apparatus comprising at least one processor and at least one memory comprising computer program code, the at least one memory and the computer program code configured to, with the at least one processor, cause the apparatus to:
analyze respective signals captured by each of the first and second microphones;
determine one or more quality measures based on the analysis;
in an instance in which the one or more quality measures satisfy a predefined condition, determine frequency responses of the signals captured by the first and second microphones;
determine a difference between the frequency responses of the signals captured by the first and second microphones; and
process the signal captured by the first microphone with a filter to correspondingly filter the signal captured by the first microphone relative to the signal captured by the second microphone based upon the difference.