Patents by Inventor Graeme M. Clark
Graeme M. Clark has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9084892Abstract: The sound processor and method uses a model of basilar membrane motion to select stimuli, based upon the predicted motion which the acoustic signal presented would produce in an acoustically excited normally hearing cochlea. The filter; used, in contrast to single channel per electrode approaches, cover multiple channels and overlap with each other. Consequently the stimuli presented produce a neural excitation pattern which approximates the spatio-temporal travelling wave observed on the basilar membrane in an acoustically excited normally hearing cochlea. Preferably, the predicted electrode stimuli are based upon the instantaneous predicted amplitude of the electrode location.Type: GrantFiled: June 15, 2006Date of Patent: July 21, 2015Assignee: Cochlear LimitedInventors: Peter J. Blamey, Brett A. Swanson, Hugh McDermott, James F. Patrick, Graeme M. Clark
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Patent number: 8296154Abstract: A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity sort-duration speech features in said signal.Type: GrantFiled: October 28, 2008Date of Patent: October 23, 2012Assignee: Hearworks Pty LimitedInventors: Andrew E. Vandali, Graeme M. Clark
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Publication number: 20090076806Abstract: A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity sort-duration speech features in said signal.Type: ApplicationFiled: October 28, 2008Publication date: March 19, 2009Inventors: Andrew E. Vandali, Graeme M. Clark
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Patent number: 7444280Abstract: A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity sort-duration speech features in said signal.Type: GrantFiled: January 18, 2007Date of Patent: October 28, 2008Assignee: Cochlear LimitedInventors: Andrew Vandali, Graeme M. Clark
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Patent number: 7219065Abstract: A sound processor including a microphone (1), a pre-amplifier (2), a bank of N parallel filters (3), means for detecting short-duration transitions in the envelope signal of each filter channel, and means for applying gain to the outputs of these filter channels in which the gain is related to a function of the second-order derivative of the slow-varying envelope signal in each filter channel, to assist in perception of low-intensity short-duration speech features in said signal.Type: GrantFiled: October 25, 2000Date of Patent: May 15, 2007Inventors: Andrew E. Vandali, Graeme M. Clark
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Patent number: 4982432Abstract: An electrotactile vocoder for persons having impaired hearing in which electrical stimulation is applied to a multiplicity of electrodes in contact with either side of each finger so as to electrically stimulate the digital nerves of the user under the control of stimulator circuitry which is in turn controlled by processing circuitry for a speech signal received by a directional microphone worn on the ear of the user. The speech processor is suitably of the type described in U.S. Pat. No. 4,441,202 Tong et al. modified to cause stimulation of the digital nerves via the eight finger electrodes and a common electrode held in contact with the wrist of the user.Type: GrantFiled: November 29, 1989Date of Patent: January 1, 1991Assignee: University of MelbourneInventors: Graeme M. Clark, Peter J. Blamey
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Patent number: 4515158Abstract: Signal processing system for converting a speech signal into a data signal for controlling a hearing prosthesis having an implanted electrode array adapted to stimulate the auditory nerve fibers of a patient by the application of electrical currents to selected electrodes in the array. The system generates an input signal current corresponding to a received speech signal. The amplitude and frequency of the fundamental voicing component of the speech signal is approximated as are the amplitude and frequency of at least one formant of the speech signal. A programmable microprocessor produces instructions which cause the application of electrical currents to selected groups of electrodes in the array with or without delays between the stimulation of each electrode in the groups.Type: GrantFiled: December 11, 1981Date of Patent: May 7, 1985Assignee: The Commonwealth of Australia Secretary of Industry and CommerceInventors: James F. Patrick, Peter Seligman, Yit C. Tong, Graeme M. Clark
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Patent number: 4441202Abstract: A system for converting a speech signal into a data signal for controlling an implantable stimulation electrode array hearing prosthesis. An input speech signal is passed through three circuit arms, comprising filter circuits, zero crossing counter circuits and RMS measuring circuits (3-13), for producing signals representing amplitude and frequency of the fundamental voicing component and the first three formants of the speech signal. Computer (14) is programmed with a patient's psychophysical data, and determines the manner of stimulation of the electrodes by ranking the sharpness of the electrodes and assigning sub-bands of the second formant frequency range to particular electrodes. Also, the voiced or unvoiced nature of the signal is determined by comparing the fundamental and second formant components. The output signal passed through a data formatter (15) and transmitter (16) has both formant and prosodic information whereby the production of confusing percepts is avoided.Type: GrantFiled: January 27, 1981Date of Patent: April 3, 1984Assignee: The University of MelbourneInventors: Yit C. Tong, Peter M. Seligman, Graeme M. Clark, James F. Patrick, John B. Millar
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Patent number: 4267410Abstract: A prosthesis and specifically an aural prosthesis which includes an implantable component which is in connection with means which can selectively stimulate neural endings the component being arranged to receive a signal from an extension component which converts a parameter into a transmittable form and which includes a transmitter, the signal from the transmitter received by the implanted component which resolves the signal into groups of two components which can selectively stimulate the neural endings, the stimulation to each ending being independent to stimulation of each other neural ending in both intensity and phase.Type: GrantFiled: November 1, 1978Date of Patent: May 12, 1981Assignee: The University of MelbourneInventors: Ian C. Forster, James F. Patrick, Yit C. Tong, Raymond C. Black, Graeme M. Clark