Patent application number | Description | Published |
20100183177 | USER-ADAPTABLE HEARING AID COMPRISING AN INITIALIZATION MODULE - The invention relates to a hearing aid to be arranged at and/or in an ear, comprising a microphone for converting acoustic signals into electrical signals, a hearing module for providing the electrical signals, a loudspeaker for converting the electrical signals outputted from the hearing module into acoustic signals. The hearing module comprises a means for noise suppression effecting a noise estimation to determine a signal-dependent filter and to provide a noise-reduced output signal. | 07-22-2010 |
20100222675 | DEVICE AND METHOD FOR DETERMINING THE STATE OF ANCHORING OF AN IMPLANTED ENDOPROSTHESIS - In a device ( | 09-02-2010 |
20110064232 | METHOD AND DEVICE FOR ANALYSING AND ADJUSTING ACOUSTIC PROPERTIES OF A MOTOR VEHICLE HANDS-FREE DEVICE - Method and device for analysing and adjusting acoustic properties of a hands-free device of a motor vehicle, including at least one hands-free microphone, at least one vehicle loudspeaker and a first radio interface, using a calibrated measuring microphone and a calibrated test loudspeaker and a data processing device which is connected to the measuring microphone and test loudspeaker and includes a second radio interface. | 03-17-2011 |
20110200206 | METHOD AND DEVICE FOR PHASE-SENSITIVE PROCESSING OF SOUND SIGNALS - A method and device for phase-sensitive processing of sound signals of at least one sound source may include arranging two microphones at a distance d from each other, capturing sound signals with both microphones, generating associated microphone signals, and processing the sound signals of the microphones. During a calibration mode, a calibration-position-specific, frequency-dependent phase difference vector φ | 08-18-2011 |
20130094664 | METHOD AND DEVICE FOR PHASE-SENSITIVE PROCESSING OF SOUND SIGNALS - A method and device for phase-sensitive processing of sound signals of at least one sound source may include arranging two microphones at a distance d from each other, capturing sound signals with both microphones, generating associated microphone signals, and processing the sound signals of the microphones. During a calibration mode, a calibration-position-specific, frequency-dependent phase difference vector φ0(f) between the associated calibration microphone signals may be calculated from their frequency spectra for the calibration position. Then, during an operating mode, a signal spectrum S of a signal to be output is calculated by multiplication of at least one of the two frequency spectra of the current microphone signals with a spectral filter function F. | 04-18-2013 |
20130117016 | METHOD AND AN APPARATUS FOR GENERATING A NOISE REDUCED AUDIO SIGNAL - A method and apparatus are provided for generating a noise reduced output signal from sound received by a first microphone. The method includes transforming the sound received by the first microphone into a first input signal and transforming sound received by a second microphone into a second input signal. The method includes calculating, for each of a plurality of frequency components, an energy transfer function value as a real-valued quotient by dividing a temporally averaged product of an amplitude of the first input signal and the second input signal by a temporally averaged absolute square of the second input signal, calculating a gain value as a function of the calculated energy transfer function value, and generating the noise reduced output signal based on the product of the first input signal and the calculated gain value at each of the plurality of frequency components. | 05-09-2013 |
20140193000 | METHOD AND APPARATUS FOR GENERATING A NOISE REDUCED AUDIO SIGNAL USING A MICROPHONE ARRAY - A method and apparatus for generating a noise reduced output signal from sound received by a first and second microphone arranged as a microphone array. The method includes transforming sound received by the first microphone into a first input signal and sound received by a second microphone into a second input signal and calculating, for each of the frequency components, a weighted sum of at least two intermediate signals calculated from the input signals by means of complex valued transfer functions and real valued Equalizer functions. The method includes a weighing function with range between zero and one, with quotients of signal energies of the intermediate functions as arguments of the weighing function, and generating the noise reduced output signal based on the weighted sum of the intermediate functions and based on the weighted sum of the first and second intermediate function at each of the frequency components. | 07-10-2014 |