Patents by Inventor Dirk Meister

Dirk Meister 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).

  • Patent number: 9919155
    Abstract: A method is described for delivering stimulation signals in an implantable multichannel neuro-stimulating device such as a cochlear implant. A stimulation channel is selected for delivering a data stimulation signal. One or more desensitization channels spatially adjacent to the stimulation channel are also selected. One or more non-data desensitization signals are delivered on the desensitization channels during a desensitization period before delivery of the data stimulation signal, and then the data stimulation signal is delivered on the stimulation channel. The stimulation channel may be blanked to prevent stimulation signals during a sensitization period before delivering the data stimulation signal.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: March 20, 2018
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventor: Dirk Meister
  • Patent number: 9895537
    Abstract: A signal processing system is described for a hearing implant system. A band pass filter bank processes an audio input signal to generate band pass signals. An implant signal processor processes the band pass signals to generate electrode stimulation signals. The processing includes: i. monitoring a key feature characteristic of the audio input signal, ii. using an original coding strategy to generate the electrode stimulation signals when the key feature is less than or equal to an initial value, and iii. using a different new coding strategy to generate the electrode stimulation signals when the key feature is greater than or equal to a coding change value. The implant signal processor automatically transitions from the original coding strategy to the new coding strategy over a transition period of time by adaptively changing the original coding strategy to become the new coding strategy.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: February 20, 2018
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Thomas Schwarzenbeck
  • Patent number: 9878157
    Abstract: An input sound signal is processed to generate band pass signals that each represent an associated band of audio frequencies. Stimulation timing signals are generated for each band pass signal, including for one or more selected band pass signals using a timing function defined to determine a mapped instantaneous frequency by adjusting instantaneous frequency based on a frequency relation factor representing a relationship between: (1) the range of audio frequencies for the band pass channel, and (2) a patient-specific, channel-specific range of stimulation rates defined based on patient-specific pitch perception measurements to enhance patient pitch perception within the range of audio frequencies for the band pass channel, and iii. generate the stimulation timing signal for the selected band pass signal at the mapped instantaneous frequency of the selected band pass signal.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: January 30, 2018
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventor: Dirk Meister
  • Publication number: 20180001089
    Abstract: A bilateral hearing implant system has a left side and a right side. There is an interaural time delay (ITD) processing module on each side that adjusts ITD characteristics of the stimulation signals based on defined groups of stimulation channels that include: i. an apical channel group on each side corresponding to a lowest range of audio frequencies up to a common apical channel group upper frequency limit, wherein a common number of one or more stimulation channels is assigned to each apical channel group, and wherein corresponding apical channel group stimulation channels on each side have matching bands of audio frequencies, and ii. one or more basal channel groups on each side corresponding to higher range audio frequencies above the apical channel group upper frequency limit.
    Type: Application
    Filed: December 17, 2015
    Publication date: January 4, 2018
    Inventors: Dirk Meister, Peter Schleich, Mathias Kals
  • Patent number: 9808624
    Abstract: A signal processing arrangement is described for signal processing in a bilateral hearing implant system having left side and right side hearing implants. An interaural coherence analysis module analyzes system input signals to produce an interaural coherence signal output characterizing reverberation-related similarity of the input signals.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: November 7, 2017
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Peter Schleich
  • Patent number: 9775997
    Abstract: Arrangements are described for generating electrode stimulation signals for an implanted electrode array having multiple stimulation contacts. An audio input preprocessor receives an input audio signal and generates band pass signals that represent associated bands of audio frequencies. A band pass signal analyzer analyzes each band pass signal to detect when one of the band pass signal components reaches a defined transition event state. A stimulation signal generator generates a set of electrode stimulation signals for the stimulation contacts from the band pass signals such that the electrode stimulation signals to a given stimulation contact: i. use a transition event stimulation pattern whenever a transition event is detected in a band pass signal associated with the given stimulation contact, and ii. use a different non-transition stimulation pattern after the transition event stimulation pattern until a next subsequent transition event is detected.
    Type: Grant
    Filed: October 6, 2015
    Date of Patent: October 3, 2017
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Peter Schleich
  • Patent number: 9776001
    Abstract: A signal processing system is described for a bilateral hearing implant system having left side and right side hearing implants. An interaural coherence analysis module receives input signals from each hearing implant including sensing microphone signals and band pass signals, and analyzes the input signals to produce an interaural coherence signal output characterizing reverberation-related similarity of the input signals. A pulse timing and coding module for each hearing implant then processes the band pass signals to develop stimulation timing signals, wherein for one or more selected band pass signals, wherein the processing includes using an envelope gating function developed from the interaural coherence signal.
    Type: Grant
    Filed: December 5, 2016
    Date of Patent: October 3, 2017
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Peter Schleich
  • Patent number: 9770590
    Abstract: An input sound signal is processed to generate band pass signals. Band pass envelope signals are extracted that reflect time varying amplitude of the band pass signals. Stimulation timing signals are generated that reflect the temporal fine structure features of the band pass signals. A key feature value present in the input sound signal or the band pass signals is monitored. For one or more selected band pass signals, a stimulation coding strategy is selected from multiple possible stimulation coding strategies based on the key feature value. The multiple possible stimulation coding strategies including an envelope-based stimulation coding strategy based on the band pass envelope signals, and an event-based stimulation coding strategy based on the stimulation timing signals. The selected stimulation coding strategy is used to produce the electrode stimulation signals for the electrode contacts.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: September 26, 2017
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Thomas Schwarzenbeck
  • Patent number: 9693155
    Abstract: Arrangements are described for generating electrode stimulation signals for stimulation contacts in implanted electrode arrays of a bilateral hearing implant system having electrode arrays on both the left- and right-sides. Left-side and right-side audio input signals are processed to generate corresponding left-side and right-side band pass signals, which each represent an associated band of audio frequencies in the audio input signal. Frequency-specific interaural time delays (ITDs) are estimated for the band pass signals, and the estimated ITDs are used to adjust interaural level differences (ILDs) in the band pass signals. The adjusted band pass signals then are used to generate left-side and right-side electrode stimulation signals for the stimulation contacts in the corresponding left-side and right-side electrode arrays.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: June 27, 2017
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Peter Schleich
  • Publication number: 20170080229
    Abstract: A signal processing system is described for a bilateral hearing implant system having left side and right side hearing implants. An interaural coherence analysis module receives input signals from each hearing implant including sensing microphone signals and band pass signals, and analyzes the input signals to produce an interaural coherence signal output characterizing reverberation-related similarity of the input signals. A pulse timing and coding module for each hearing implant then processes the band pass signals to develop stimulation timing signals, wherein for one or more selected band pass signals, wherein the processing includes using an envelope gating function developed from the interaural coherence signal.
    Type: Application
    Filed: December 5, 2016
    Publication date: March 23, 2017
    Inventors: Dirk Meister, Peter Schleich
  • Publication number: 20170080228
    Abstract: A signal processing arrangement is described for signal processing in a bilateral hearing implant system having left side and right side hearing implants. An interaural coherence analysis module analyzes system input signals to produce an interaural coherence signal output characterizing reverberation-related similarity of the input signals.
    Type: Application
    Filed: December 5, 2016
    Publication date: March 23, 2017
    Inventors: Dirk Meister, Peter Schleich
  • Publication number: 20170056657
    Abstract: An input sound signal is processed to generate band pass signals that each represent an associated band of audio frequencies. Stimulation timing signals are generated for each band pass signal, including for one or more selected band pass signals using a timing function defined to determine a mapped instantaneous frequency by adjusting instantaneous frequency based on a frequency relation factor representing a relationship between: (1) the range of audio frequencies for the band pass channel, and (2) a patient-specific, channel-specific range of stimulation rates defined based on patient-specific pitch perception measurements to enhance patient pitch perception within the range of audio frequencies for the band pass channel, and iii. generate the stimulation timing signal for the selected band pass signal at the mapped instantaneous frequency of the selected band pass signal.
    Type: Application
    Filed: August 30, 2016
    Publication date: March 2, 2017
    Inventor: Dirk Meister
  • Publication number: 20170001006
    Abstract: A signal processing system is described for a hearing implant system. A band pass filter bank processes an audio input signal to generate band pass signals. An implant signal processor processes the band pass signals to generate electrode stimulation signals. The processing includes: i. monitoring a key feature characteristic of the audio input signal, ii. using an original coding strategy to generate the electrode stimulation signals when the key feature is less than or equal to an initial value, and iii. using a different new coding strategy to generate the electrode stimulation signals when the key feature is greater than or equal to a coding change value. The implant signal processor automatically transitions from the original coding strategy to the new coding strategy over a transition period of time by adaptively changing the original coding strategy to become the new coding strategy.
    Type: Application
    Filed: June 10, 2016
    Publication date: January 5, 2017
    Inventors: Dirk Meister, Thomas Schwarzenbeck
  • Publication number: 20170001007
    Abstract: An input sound signal is processed to generate band pass signals. Band pass envelope signals are extracted that reflect time varying amplitude of the band pass signals. Stimulation timing signals are generated that reflect the temporal fine structure features of the band pass signals. A key feature value present in the input sound signal or the band pass signals is monitored. For one or more selected band pass signals, a stimulation coding strategy is selected from multiple possible stimulation coding strategies based on the key feature value. The multiple possible stimulation coding strategies including an envelope-based stimulation coding strategy based on the band pass envelope signals, and an event-based stimulation coding strategy based on the stimulation timing signals. The selected stimulation coding strategy is used to produce the electrode stimulation signals for the electrode contacts.
    Type: Application
    Filed: June 10, 2016
    Publication date: January 5, 2017
    Inventors: Dirk Meister, Thomas Schwarzenbeck
  • Publication number: 20160375244
    Abstract: A signal processing arrangement generates electrode stimulation signals to stimulation contacts in a cochlear implant electrode array. A signal filter bank transforms an input sound signal into band pass signals, which each represent an associated frequency band of audio frequencies. A signal processing module processes the band pass signals in a sequence of sampling time frames, wherein for each time frame, the processing includes performing a spectral feature analysis of the band pass signals, and dynamically assigning a stimulation focus pattern to one or more of the band pass signals based on the spectral feature analysis. A stimulation coding module is configured to code the processed band pass signals for each time frame to produce the electrode stimulation signals for delivery by the stimulation contacts to a region of adjacent auditory neural tissues.
    Type: Application
    Filed: June 28, 2016
    Publication date: December 29, 2016
    Inventors: Peter Schleich, Dirk Meister
  • Publication number: 20160279413
    Abstract: A signal processing arrangement generates electrical stimulation signals to electrode contacts in an implanted cochlear implant array. An input sound signal is analyzed to determine characteristic frequency components. One or more stimulation events are requested based on the timing and amplitude of the frequency component. A frequency-specific stimulation sequence (FSSS) is generated for stimulation of a plurality of adjacent electrode contacts. The FSSS starts with a stimulation pulse to the highest-frequency, most-basal electrode contact of the adjacent electrode contacts, ends with a stimulation pulse to the lowest-frequency, most-apical electrode contact of the adjacent electrode contacts, and reaches a maximum stimulation amplitude at a frequency-specific location within the cochlea corresponding to a natural traveling wave maximum. The electrode stimulation signals are then generated from the FSSS for delivery by the electrode contacts to adjacent auditory neural tissue.
    Type: Application
    Filed: March 24, 2016
    Publication date: September 29, 2016
    Inventors: Peter Schleich, Dirk Meister, Reinhold Schatzer
  • Publication number: 20160279412
    Abstract: A hearing signal processor processes an input sound signal and generates an electrical communications signal for an upper range of sound frequencies, and an acoustic communications signal for a lower range of sound frequencies. An implanted electrical stimulation subsystem includes an electrode array with one or more electrode contacts in an acoustically perceivable cochlear region retaining residual natural hearing. The electrical stimulation subsystem receives the electrical communications signal and delivers corresponding electrical stimulation signals to the electrode contacts for electrical stimulation of adjacent neural tissue. An external acoustic stimulation subsystem receives the acoustic communications signal and delivers corresponding amplified acoustic stimulation signals to the ear canal of the patient.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 29, 2016
    Inventors: Marek Polak, Peter Schleich, Dirk Meister, Reinhold Schatzer
  • Patent number: 9393413
    Abstract: A system and method are described for generating electrode stimulation signals for electrode contacts in a cochlear implant electrode array. An input audio signal is processed to generate band pass channel signals that each represent an associated band of audio frequencies. From each channel signal channel, audio information is extracted including a channel signal envelope reflecting channel signal energy. Initial electrode stimulation pulses are then generated based on the band pass signal envelopes. A gating function is applied to the initial electrode stimulation pulses based on a gating feedback signal characterizing preceding stimulation signals to produce gated electrode stimulation pulses. The gated electrode stimulation pulses are set to the initial electrode stimulation signals when the band pass signal envelopes are greater than the gating feedback signal, and otherwise are set to zero.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: July 19, 2016
    Assignee: MED-EL Elektromedizinische Geraete GmbH
    Inventors: Dirk Meister, Peter Schleich, Thomas Schwarzenbeck
  • Publication number: 20160165363
    Abstract: Arrangements are described for generating electrode stimulation signals for stimulation contacts in implanted electrode arrays of a bilateral hearing implant system having electrode arrays on both the left- and right-sides. Left-side and right-side audio input signals are processed to generate corresponding left-side and right-side band pass signals, which each represent an associated band of audio frequencies in the audio input signal. Frequency-specific interaural time delays (ITDs) are estimated for the band pass signals, and the estimated ITDs are used to adjust interaural level differences (ILDs) in the band pass signals. The adjusted band pass signals then are used to generate left-side and right-side electrode stimulation signals for the stimulation contacts in the corresponding left-side and right-side electrode arrays.
    Type: Application
    Filed: December 2, 2015
    Publication date: June 9, 2016
    Inventors: Dirk Meister, Peter Schleich
  • Publication number: 20160101285
    Abstract: Arrangements are described for generating electrode stimulation signals for an implanted electrode array having multiple stimulation contacts. An audio input preprocessor receives an input audio signal and generates band pass signals that represent associated bands of audio frequencies. A band pass signal analyzer analyzes each band pass signal to detect when one of the band pass signal components reaches a defined transition event state. A stimulation signal generator generates a set of electrode stimulation signals for the stimulation contacts from the band pass signals such that the electrode stimulation signals to a given stimulation contact: i. use a transition event stimulation pattern whenever a transition event is detected in a band pass signal associated with the given stimulation contact, and ii. use a different non-transition stimulation pattern after the transition event stimulation pattern until a next subsequent transition event is detected.
    Type: Application
    Filed: October 6, 2015
    Publication date: April 14, 2016
    Inventors: Dirk Meister, Peter Schleich