Patent ID: 8204741
Filing Date: 2012-06-19
Classification: H04R

Abstract:
1. A method for selecting signal channels from a plurality of channels in a speech processor of a hearing prosthesis for processing signals of the selected channels and using the signals of the selected channels to electrically stimulate auditory nerve, comprising: sampling a plurality of the channels and obtaining a binary representation of a plurality of the samples; arranging the binary representations of the plurality of samples into a series of bit planes from a most significant bit plane containing the most significant bit of a respective binary representation, to a least significant bit plane containing the least significant bit of a respective binary representation; determining with a processor which of the series of bit planes include a maxima value; and summing bits, through calculation, of a first determined bit plane corresponding to a determined bit plane that is a most significant bit plane of the series of bit planes including a maxima value; selecting channels having maxima values in the first determined bit plane when the calculated summation of bits of the first determined bit plane is less than or equal to a predetermined quantity of target channels; processing respective signals of the selected channels after the channels are selected; and using the signals of the selected channels to electrically stimulate an auditory nerve.