Electrical Stimulation of the Acoustic Nerve with Coherent Fine Structure
First Claim
1. A method of enhancing temporal cues in a cochlear implant system, the cochlear implant system including an electrode array in which each electrode is stimulated based on a stimulation sequence of pulses;
- the method comprising;
deriving signal c(t) from an acoustic representative electrical signal, the signal c(t) including low frequency temporal information;
deriving an estimate of spectral energy e(t) from the acoustic representative electrical signal, the signal e(t) including spectral information with substantially no pitch related temporal information; and
creating the stimulation sequence for at least one electrode in the array as a function of c(t) and e(t).
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Abstract
A method of enhancing temporal cues in a cochlear implant system is presented. The cochlear implant system includes an electrode array in which each electrode is stimulated based on a stimulation sequence of pulses. The method includes deriving signal c(t) from an acoustic representative electrical signal, the signal c(t) including low frequency temporal information. An estimate of spectral energy e(t) is derived from the acoustic representative electrical signal, the signal e(t) including spectral information with substantially no pitch related temporal information. The stimulation sequence is created for at least one electrode in the array as a function of c(t) and e(t).
42 Citations
26 Claims
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1. A method of enhancing temporal cues in a cochlear implant system, the cochlear implant system including an electrode array in which each electrode is stimulated based on a stimulation sequence of pulses;
- the method comprising;
deriving signal c(t) from an acoustic representative electrical signal, the signal c(t) including low frequency temporal information; deriving an estimate of spectral energy e(t) from the acoustic representative electrical signal, the signal e(t) including spectral information with substantially no pitch related temporal information; and creating the stimulation sequence for at least one electrode in the array as a function of c(t) and e(t). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- the method comprising;
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14. A system for enhancing temporal cues in a cochlear implant system, the cochlear implant system including:
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an electrode array in which each electrode is stimulated based on a stimulation sequence of pulses; a first module for deriving signal c(t) from an acoustic representative electrical signal, the signal c(t) including low frequency temporal information; a second module for estimating spectral energy e(t) from the acoustic representative electrical signal, the signal e(t) including spectral information with substantially no pitch related temporal information; and a third module for creating the stimulation sequence for at least one electrode in the array as a function of c(t) and e(t). - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A computer program product for enhancing temporal cues in a cochlear implant system, the cochlear implant system including an electrode array in which each electrode is stimulated based on a stimulation sequence of pulses the computer program product comprising a computer usable medium having computer readable program code thereon, the computer readable program code comprising:
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program code for deriving signal c(t) from an acoustic representative electrical signal, the signal c(t) including low frequency temporal information; program code for deriving an estimate of spectral energy e(t) from the acoustic representative electrical signal, the signal e(t) including spectral information with substantially no pitch related temporal information; and program code for creating the stimulation sequence for at least one electrode in the array as a function of c(t) and e(t).
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Specification