Patents by Inventor Ernst Dalhoff
Ernst Dalhoff 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: 11786149Abstract: The present invention concerns a method for the detection of distortion products of otoacoustic emissions (DPOAE), comprising the steps: (a) output of at least one first pair of primary tones each consisting of a first primary tone with frequency f1,1 and sound pressure level L1,1 and a second primary tone with frequency f2,1 and sound pressure level L2,1 with f2,1>f1,1, and (b) detecting evoked distortion products of otoacoustic emissions (DPOAE), characterized in that the first primary tone {f1,1, L1,1} is output with a time delay tlag after the second primary tone {f2,1, L2,1}.Type: GrantFiled: June 15, 2018Date of Patent: October 17, 2023Assignee: Eberhard Karls University TübingenInventors: Ernst Dalhoff, Dennis Zelle
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Patent number: 11024421Abstract: The automated determination of an individual function of a DPOAE level map with pdp,I=f(L1, L2) of human or animal hearing. The method may include reading into a main memory a model function with model parameters of a DPOAE level map, based upon a number of N DPOAE measurements of a stimulation frequency pair with respectively different level pairs in a population (p) of a population of normally hearing subjects, automatically presenting n different level pairs of a stimulation frequency pair via tone output means to an individual and detecting the corresponding DPOAE's of the individual via tone recording means, wherein at least the first level pair is predefined, iteratively adapting the model function to the measured n DPOAE's until an individual function is obtained with individual parameters of a DPOAE level map of the individual, outputting the individual function and/or its individual parameters.Type: GrantFiled: March 14, 2017Date of Patent: June 1, 2021Assignee: EBERHARD-KARLS-UNIVERSITÄT TÜBINGENInventors: Ernst Dalhoff, Dennis Zelle
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Publication number: 20200268288Abstract: The present invention concerns a method for the detection of distortion products of otoacoustic emissions (DPOAE), comprising the steps: (a) output of at least one first pair of primary tones each consisting of a first primary tone with frequency f1,1 and sound pressure level L1,1 and a second primary tone with frequency f2,1 and sound pressure level L2,1 with f2,1>f1,1, and (b) detecting evoked distortion products of otoacoustic emissions (DPOAE), characterized in that the first primary tone {f1,1, L1,1} is output with a time delay tlag after the second primary tone {f2,1, L2,1}.Type: ApplicationFiled: June 15, 2018Publication date: August 27, 2020Inventors: Ernst Dalhoff, Dennis Zelle
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Patent number: 10616699Abstract: In a hearing aid (26) that can be inserted into the ear canal (12) of a patient, comprising an actuator (31) effecting a mechanical stimulation of the tympanic membrane (14), the actuator (31) comprises an inner surface (32) associated with the tympanic membrane (14) and an outer surface (42) associated with the ear canal (12) and is configured as an areal disk actuator, whose deformation stimulates the tympanic membrane (14) by areal deformation. On the actuator (31) at a distance from the outer surface (42) a cover plate (43) is arranged which together with the outer surface (42) delimits a preferably lenticular cavity (48).Type: GrantFiled: January 17, 2019Date of Patent: April 7, 2020Assignee: EBERHARD KARLS UNIVERSITAET TUEBINGEN MEDIZINISCHE FAKULTAET GESCHWISTER-SCHOLL-PLATZInventors: Ernst Dalhoff, Hans-Peter Zenner
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Patent number: 10561347Abstract: In a method for examining the faculty of hearing for at least one ear of a mammal, in which growth curves are determined on the basis of the measurement of DPOAE's evoked by pairs of excitation signals (f1, f2) for different excitation frequencies f2, the ear is presented with first excitation signals with a first excitation frequency f1 and a first noise level L1 and secondary excitation signals with a second excitation frequency f2 and a second noise level L2. Pulse pairs with a first pulse of the first excitation signal and a second pulse of the second excitation signal are presented in the ear, and the DPOAE's evoked thereby are captured and evaluated. A set of at least two different pulse pairs with different second excitation frequencies f2 is presented in one block that is repeated several times during a measuring period.Type: GrantFiled: June 19, 2015Date of Patent: February 18, 2020Assignee: Eberhard Karls Universitat TubingenInventors: Ernst Dalhoff, Dennis Zelle
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Publication number: 20190158966Abstract: In a hearing aid (26) that can be inserted into the ear canal (12) of a patient, comprising an actuator (31) effecting a mechanical stimulation of the tympanic membrane (14), the actuator (31) comprises an inner surface (32) associated with the tympanic membrane (14) and an outer surface (42) associated with the ear canal (12) and is configured as an areal disk actuator, whose deformation stimulates the tympanic membrane (14) by areal deformation. On the actuator (31) at a distance from the outer surface (42) a cover plate (43) is arranged which together with the outer surface (42) delimits a preferably lenticular cavity (48).Type: ApplicationFiled: January 17, 2019Publication date: May 23, 2019Applicant: EBERHARD KARLS UNIVERSITAT TUBINGEN MEDIZINISCHE FAKULTATInventors: Ernst DALHOFF, Hans-Peter ZENNER
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Patent number: 10219087Abstract: In a hearing aid (26) that can be inserted into the ear canal (12) of a patient, comprising an actuator (31) effecting a mechanical stimulation of the tympanic membrane (14), the actuator (31) comprises an inner surface (32) associated with the tympanic membrane (14) and an outer surface (42) associated with the ear canal (12) and is configured as an areal disk actuator, whose deformation stimulates the tympanic membrane (14) by areal deformation. On the actuator (31) at a distance from the outer surface (42) a cover plate (43) is arranged which together with the outer surface (42) delimits a preferably lenticular cavity (48).Type: GrantFiled: December 18, 2014Date of Patent: February 26, 2019Assignee: Eberhard Karls Universitat Tubingen Medizinische FakultatInventors: Ernst Dalhoff, Hans-Peter Zenner
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Publication number: 20170332977Abstract: The automated determination of an individual function of a DPOAE level map with pdp,I=f(L1, L2) of human or animal hearing. The method may include reading into a main memory a model function with model parameters of a DPOAE level map, based upon a number of N DPOAE measurements of a stimulation frequency pair with respectively different level pairs in a population (p) of a population of normally hearing subjects, automatically presenting n different level pairs of a stimulation frequency pair via tone output means to an individual and detecting the corresponding DPOAE's of the individual via tone recording means, wherein at least the first level pair is predefined, iteratively adapting the model function to the measured n DPOAE's until an individual function is obtained with individual parameters of a DPOAE level map of the individual, outputting the individual function and/or its individual parameters.Type: ApplicationFiled: March 14, 2017Publication date: November 23, 2017Inventors: Ernst Dalhoff, Dennis Zelle
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Publication number: 20170150909Abstract: In a method for examining the faculty of hearing for at least one ear of a mammal, in which growth curves are determined on the basis of the measurement of DPOAE's evoked by pairs of excitation signals (f1, f2) for different excitation frequencies f2, the ear is presented with first excitation signals with a first excitation frequency f1 and a first noise level L1 and secondary excitation signals with a second excitation frequency f2 and a second noise level L2. Pulse pairs with a first pulse of the first excitation signal and a second pulse of the second excitation signal are presented in the ear, and the DPOAE's evoked thereby are captured and evaluated. A set of at least two different pulse pairs with different second excitation frequencies f2 is presented in one block that is repeated several times during a measuring period.Type: ApplicationFiled: June 19, 2015Publication date: June 1, 2017Applicant: EBERHALD KARLS UNIVERSITAT TUBINGENInventors: Ernst Dalhoff, Dennis Zelle
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Patent number: 9497556Abstract: The invention relates to a sound transducer for producing sound vibrations, which can be inserted in an ear and can be used in particular for an implantable hearing aid. The sound transducer has at least one carrier layer and at least one piezoelectric layer, as a result of which a deflection via a bimorph principle is achieved, or a deflection can be detected by picking up a voltage.Type: GrantFiled: February 24, 2011Date of Patent: November 15, 2016Assignee: Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.Inventors: Dominik Kaltenbacher, Armin Schäfer, Jonathan Schächtele, Hans Zenner, Erich Goll, Ernst Dalhoff, Paul Muralt, Janine Conde
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Publication number: 20160323680Abstract: In a hearing aid (26) that can be inserted into the ear canal (12) of a patient, comprising an actuator (31) effecting a mechanical stimulation of the tympanic membrane (14), the actuator (31) comprises an inner surface (32) associated with the tympanic membrane (14) and an outer surface (42) associated with the ear canal (12) and is configured as an areal disk actuator, whose deformation stimulates the tympanic membrane (14) by areal deformation. On the actuator (31) at a distance from the outer surface (42) a cover plate (43) is arranged which together with the outer surface (42) delimits a preferably lenticular cavity (48).Type: ApplicationFiled: December 18, 2014Publication date: November 3, 2016Applicant: EBERHARD KARLS UNIVERSITAT TUBINGEN MEDIZINISCHE F AKULTATInventors: Ernst DALHOFF, Hans-Peter ZENNER
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Patent number: 9078073Abstract: In a hearing aid having a microphone to be arranged at a body of a user for capturing ambient sound, a loudspeaker for outputting the ambient sound after having been amplified on a frequency-dependent basis, and a signal processor, the signal processor is configured to amplify the sound such that the amplified sound is audible to the user, and to automatically re-adjust the gain by the following steps: selecting a tone having a specific frequency; outputting the tone and the amplified ambient sound via the loudspeaker as an output sound; capturing via said microphone an analysis sound composed of ambient sound and of a reflection of said output sound; extracting a reflection of the tone from the captured analysis sound; and determining a reflection component for the specific frequency of the tone; adjusting the gain in frequency-specific manner and based on the determined reflection component.Type: GrantFiled: July 4, 2012Date of Patent: July 7, 2015Assignee: Eberhard-Karls-Universitaet Tuebingen UniversitaetsklinikumInventors: Erich Goll, Ernst Dalhoff, Hans-Peter Zenner
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Publication number: 20140193010Abstract: In a hearing aid having a microphone to be arranged at a body of a user for capturing ambient sound, a loudspeaker for outputting the ambient sound after having been amplified on a frequency-dependent basis, and a signal processor, the signal processor is configured to amplify the sound such that the amplified sound is audible to the user, and to automatically re-adjust the gain by the following steps: selecting a tone having a specific frequency; outputting the tone and the amplified ambient sound via the loudspeaker as an output sound; capturing via said microphone an analysis sound composed of ambient sound and of a reflection of said output sound; extracting a reflection of the tone from the captured analysis sound; and determining a reflection component for the specific frequency of the tone; adjusting the gain in frequency-specific manner and based on the determined reflection component.Type: ApplicationFiled: July 4, 2012Publication date: July 10, 2014Applicant: Eberhard-Karls-Universitaet Tuebingen UniversitaetsklinikumInventors: Erich Goll, Ernst Dalhoff, Hans-Peter Zenner
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Publication number: 20120053393Abstract: The invention relates to a sound transducer for producing sound vibrations, which can be inserted in an ear and can be used in particular for an implantable hearing aid. The sound transducer has at least one carrier layer and at least one piezoelectric layer, as a result of which a deflection via a bimorph principle is achieved, or a deflection can be detected by picking up a voltage.Type: ApplicationFiled: February 24, 2011Publication date: March 1, 2012Applicant: Fraunhofer-Gesellschaft zur Forderung der Angewandten Forschung E.V.Inventors: Dominik Kaltenbacher, Armin Schäfer, Jonathan Schächtele, Hans Zenner, Erich Goll, Ernst Dalhoff, Paul Muralt, Janine Conde
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Patent number: 6844936Abstract: A device for the non-contacting measurement of an object to be measured, particularly for distance and/or vibration measurement, has at least one laser light source, optical devices for splitting the light into object light (4) and reference light (5) for interacting with the object to be measured and for superimposing object light and reference light following the interaction of the object light with the object to be measured, preferably a frequency shift device in the form of a Bragg cell for producing a frequency shift between the object light and the reference light and a detecting device (15) for converting reference light and object light into electrical signals suitable for further processing. The detecting device has at least two series-connected optoelectronic transducers in the form of photodiodes (30, 31). Between the transducers is located a tap (32) for tapping a difference signal which, for further processing, is supplied to a transimpedance circuit (33) associated with one of the transducers.Type: GrantFiled: May 29, 2002Date of Patent: January 18, 2005Assignee: Hans-Peter ZennerInventor: Ernst Dalhoff
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Publication number: 20030011780Abstract: A device for the non-contacting measurement of an object to be measured, particularly for distance and/or vibration measurement, has at least one laser light source, optical devices for splitting the light into object light (4) and reference light (5) for interacting with the object to be measured and for superimposing object light and reference light following the interaction of the object light with the object to be measured, preferably a frequency shift device in the form of a Bragg cell for producing a frequency shift between the object light and the reference light and a detecting device (15) for converting reference light and object light into electrical signals suitable for further processing. The detecting device has at least two series-connected optoelectronic transducers in the form of photodiodes (30, 31). Between the transducers is located a tap (32) for tapping a difference signal which, for further processing, is supplied to a transimpedance circuit (33) associated with one of the transducers.Type: ApplicationFiled: May 29, 2002Publication date: January 16, 2003Inventor: Ernst Dalhoff