Enhancing fine time structure transmission for hearing implant system
First Claim
1. A method of signal processing for a hearing implant, the hearing implant including at least one electrode, each electrode associated with a channel specific sampling sequence, the method comprising:
- processing an acoustic audio signal to generate for each electrode a band pass signal representing an associated band of audio frequency;
determining for each electrode a sequence signal as a function of the electrode'"'"'s associated band pass signal and channel specific sampling sequence;
determining an envelope of each band pass signal;
filtering the envelope of each band pass signal to reduce modulations resulting from unresolved harmonics, creating for each electrode an associated filtered envelope signal; and
weighting each electrode'"'"'s sequence signal based, at least in part, on the electrode'"'"'s associated filtered envelope signal.
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Abstract
A system and method of signal processing for a hearing implant. The hearing implant includes at least one electrode, each electrode associated with a channel specific sampling sequence. An acoustic audio signal is processed to generate for each electrode a band pass signal representing an associated band of audio frequency. For each electrode, a sequence signal is determined as a function of the electrode'"'"'s associated band pass signal and channel specific sampling sequence. An envelope of each band pass signal is determined. The envelope of each band pass signal is filtered to reduce modulations resulting from unresolved harmonics, creating for each electrode an associated filtered envelope signal. Each electrode'"'"'s sequence signal is weighted based, at least in part, on the electrode'"'"'s associated filtered envelope signal.
27 Citations
22 Claims
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1. A method of signal processing for a hearing implant, the hearing implant including at least one electrode, each electrode associated with a channel specific sampling sequence, the method comprising:
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processing an acoustic audio signal to generate for each electrode a band pass signal representing an associated band of audio frequency; determining for each electrode a sequence signal as a function of the electrode'"'"'s associated band pass signal and channel specific sampling sequence; determining an envelope of each band pass signal; filtering the envelope of each band pass signal to reduce modulations resulting from unresolved harmonics, creating for each electrode an associated filtered envelope signal; and weighting each electrode'"'"'s sequence signal based, at least in part, on the electrode'"'"'s associated filtered envelope signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A hearing system comprising:
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at least one electrode, each electrode associated with a channel specific sampling sequence; a signal processor configured to; process an acoustic audio signal to generate for each electrode a band pass signal representing an associated band of audio frequency; determining for each electrode a sequence signal as a function of the electrode'"'"'s associated band pass signal and channel specific sampling sequence; determine an envelope of each band pass signal; filter the envelope of each band pass signal to reduce modulations resulting from unresolved harmonics, creating for each electrode an associated filtered envelope signal; and weight each electrode'"'"'s sequence signal based, at least in part, on the electrode'"'"'s associated filtered envelope signal. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A computer program product for processing signals associated with a hearing implant, the hearing implant including at least one electrode, each electrode associated with a channel specific sampling sequence, the computer program product comprising a non-transitory computer readable medium having computer readable program code thereon, the computer readable program code comprising:
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program code for generating a band pass signal for each electrode representing an associated band of audio frequency based at least in part, on an acoustic audio signal; program code for determining for each electrode a sequence signal as a function of the electrode'"'"'s associated band pass signal and channel specific sampling sequence; program code for determining an envelope of each band pass signal; program code for filtering the envelope of each band pass signal to reduce modulations resulting from unresolved harmonics, creating for each electrode an associated filtered envelope signal; and program code for weighting each electrode'"'"'s sequence signal based, at least in part, on the electrode'"'"'s associated filtered envelope signal.
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Specification