Patent ID: 8019429

Claim:
A method of generating electrode stimulation signals for an implanted electrode array, the method comprising: processing an acoustic audio signal to generate a plurality of band pass signals, wherein each band pass signal includes a fine structure carrier signal and a modulator envelope signal; for each band pass signal: i. extracting fine time structure information from the carrier signal to determine a sequence of stimulation event signals, ii. for one or more low frequency band pass signals, sampling the modulator envelope signal synchronously with the carrier signal to create envelope weighted stimulation event signals, iii. for one or more higher frequency band pass signals, (1) if and only if the modulator envelope signal exceeds a sampling threshold value, then (2) sampling the modulator envelope signal synchronously with the carrier signal to create envelope weighted stimulation event signals, processing the envelope weighted stimulation event signals to produce electrode stimulation signals for the implanted electrode array.