Evaluating the harmonic quality of pitch adaptation methods for use in cochlear implants | IEEE Conference Publication | IEEE Xplore

Evaluating the harmonic quality of pitch adaptation methods for use in cochlear implants


Abstract:

Some cochlear implant patients still cannot use their devices to a full extent. A limited insertion depth of the electrode array decreases the available frequency range, ...Show More

Abstract:

Some cochlear implant patients still cannot use their devices to a full extent. A limited insertion depth of the electrode array decreases the available frequency range, making speech incomprehensible. A recently proposed pitch modification method for cochlear implants aims alleviate the emerging deficiencies by modifying the pitch of an incoming signal. The pitch of the signal will be set to a fixed comfort pitch, which is the pitch of best comprehension for a given patient resulting in better speech recognition. Two approaches have been implemented to achieve this: The adaptive pitch transposition and a speech synthesis algorithm based on linear predictive coding (LPC). This paper compares the two approaches for their harmonic quality and runtime. As a result, the LPC-based approach seems better suited for cochlear implant use due to a much lower runtime as well as better harmonic quality.
Date of Conference: 05-07 July 2017
Date Added to IEEE Xplore: 23 October 2017
ISBN Information:
Conference Location: Barcelona, Spain

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