Paper Review : Effect of Low Pass Filtering of Digital Frequencies in Quantized Signals

 Effect of Low Pass Filtering of Digital Frequencies in Quantized Signals

A linear array of electrodes was used to represent the discrete digital frequencies in the processed signal. A specific electrode in the array would be activated according to the number of quantizing intervals in a given high portion of the quantized waveform. This corresponds to performing a frequency-to-distance mapping of speech similar to what is done by the basilar membrane of the cochlea. If certain frequencies are not displayed, then this reduces the number of electrodes needed and corresponds to a filtering operation. The effect of reducing the number of electrodes needed by high-pass filtering the processed signal has already been studied. The current research addresses the
trying to reduce the number of electrodes low-pass filtering the processed speech.This was
measured using the normal aural channel.


Paper Title: The Effect of Low-pass Filtering of the Digital Frequencies in Quantized Speech.
Authors: Edward M. O'Brien and David J. Pogue
Published at: IEEE ENGINEERING IN MEDICINE & BIOLOGY SOCIETY 10TH ANNUAL INTERNATIONAL CONFERENCE--I107
Publisher: IEEE