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Estimation of Harmonic Frequencies for Hearing Implant Sound Coding Using Active Contour Models
专利权人:
MED-EL Elektromedizinische Geraete GmbH
发明人:
Florian Frühauf
申请号:
US15765746
公开号:
US20180287590A1
申请日:
2016.10.07
申请国别(地区):
US
年份:
2018
代理人:
摘要:
A signal processing arrangement generates electrical stimulation signals to electrode contacts in an implanted cochlear implant array. An input sound signal is processed to generate band pass signals that each represent an associated band of audio frequencies. A spectrogram representative of frequency spectrum present in the input sound signal is generated. A characteristic envelope signal is produced for each band pass signal based on its amplitude. An active contour model is applied to estimate dominant frequencies present in the spectrogram, and the estimate is used to generate stimulation timing signals for the input sound signal. The electrode stimulation signals are produced for each electrode contact based on the envelope signals and the stimulation timing signals.
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