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| Number | Title | Issue Date |
| 8116490 | Method for operation of a hearing device system and hearing device system There is described a method for operation of a hearing device system with two microphones arranged spatially separated from one another and with sound-generating output units assigned to these microphones, in which, by comparison of the microphone signals or of sign... | 02/14/2012 |
| 8116489 | Accoustically transparent occlusion reduction system and method A system and method that reduces the perceptual effect resulting from ear occlusion include an electro-acoustic feedback network that produces phase canceling sounds in the ear, where a receiver and a microphone are located. A control mechanism controls the response... | 02/14/2012 |
| 8068629 | Hearing aid and method of utilizing gain limitation in a hearing aid A hearing aid (200) with multiple microphones comprises a first microphone (1) for converting sound into a first audio signal, a second microphone (20) for converting sound into a second audio signal, directional processing means for combining t... | 11/29/2011 |
| 8045737 | Method of obtaining settings of a hearing instrument, and a hearing instrument According to the invention, a real ear acoustic coupling quantity representative of the acoustic coupling of a hearing instrument to the user's ear or an anatomical transfer quantity—for example the Real-Ear-to-Coupler-Difference (RECD), the Microphone Location Ef... | 10/25/2011 |
| 8045738 | System for managing feedback Feedback detection, adaptive notch filtering, and gain adjustment are combined for managing feedback. Feedback detection includes detection of short term and long term spectral peaks and assessing their magnitude, shape, rate of growth, and power concentration ratio... | 10/25/2011 |
| 8005247 | Power direct bone conduction hearing aid system The hearing aid system has a sound-to-vibration conversion circuitry including a microphone system, an electronic amplifier and a vibrator. A housing accommodates the vibrator. The vibrator is connected to an abutment that goes through the skin. The abutment is conn... | 08/23/2011 |
| 7995780 | Hearing aid with feedback cancellation A hearing aid includes a hearing aid housing enclosing a microphone for converting sound into an audio signal, first feedback compensation means for providing a first feedback compensation signal of signals picked up by the microphone by modeling an internal mechani... | 08/09/2011 |
| 7983433 | Earset assembly Disclosed is an earset assembly that has a housing having a microphone port and a speaker port. A microphone is enclosed by the housing and has first and second input ports. The first input port is acoustically coupled to the microphone port to detect air pressure c... | 07/19/2011 |
| 7974428 | Hearing aid with acoustic feedback suppression A hearing aid having an input transducer (2), a signal processor (3), an output transducer (4) and an adaptive filter (5) for generating a feedback cancellation signal (101) further comprises a norm estimator (10) generating... | 07/05/2011 |
| 7965854 | Band-limited adaptive feedback canceller for hearing aids An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellati... | 06/21/2011 |
| 7965853 | Band-limited adaptive feedback canceller for hearing aids An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellati... | 06/21/2011 |
| 7945066 | Method and apparatus for a hearing assistance system with adaptive bulk delay A hearing assistance system having adjustable bulk delay for cancellation of a time varying acoustic feedback path. The hearing assistance system including an FIR filter, coefficient update module, and delay rules module for programmable adaptive filtering. The hear... | 05/17/2011 |
| 7860263 | Hearing device and method for reducing feedback therein In a hearing device with low feedback tendency with simultaneous open feed and utilization of the natural directional effect of the pinna, the hearing device has a tube-shaped ear fitting piece for insertion into an auditory canal and speaker is arranged in the ear ... | 12/28/2010 |
| 7844063 | Hearing and apparatus with compensation of acoustic and electromagnetic feedback signals Hearing aids with microphone and telephone coil are to be made simpler and more convenient. For this purpose it is provided to use an adaptive filter to compensate acoustic and electromagnetic feedback. In order to allow for the propagation delay differences, a dela... | 11/30/2010 |
| 7809150 | Method and apparatus to reduce entrainment-related artifacts for hearing assistance systems A system providing method and apparatus to detect occurrence of an entrainment artifact and address it. The system analyzing a feedback canceller filter for certain characteristics that are associated with an entrained filter. When an entrained filter is detected, t... | 10/05/2010 |
| 7756283 | System and method for measuring vent effects in a hearing aid This invention relates to a system (300) for measuring acoustic properties of a vent (126) in a hearing aid. The system (300) comprises: a microphone (202) converting ambient sound pressure to an electric sound signal; a signal processing... | 07/13/2010 |
| 7609841 | Frequency shifter for use in adaptive feedback cancellers for hearing aids A decorrelation method for improving feedback cancellation utilizes a small frequency shifting ratio, on the order of 0.3 percent. Frequency shifting is applied only to the high frequency portion of the signal, which is shifted alternately upward and downward. ... | 10/27/2009 |
| 7596238 | Howling margin measuring device A howling margin measuring device 20 comprises processing means 28 composed of gain controlling means 21 and a compressor 22 which are connected in series and controlling means 23. The gain controlling means 21 outputs an in... | 09/29/2009 |
| 7536022 | Method to determine a feedback threshold in a hearing device Provided is a hearing device and method for compensating for a hearing loss. To compensate for the hearing loss, the hearing device and method utilize the gain during feedback in the forward path of a compressive system which, after having reached its steady state i... | 05/19/2009 |
| 7529378 | Filter for interfering signals in hearing devices In a process for filtering interfering signals, occurring with largely known constant repetition frequency at the use of hearing devices in or at the hearing device the repetition frequency of the interference signal shall be detected and at recognition of the known... | 05/05/2009 |
| 7522738 | Dual feedback control system for implantable hearing instrument The invention is directed to an implanted microphone having reduced sensitivity to vibration. In this regard, the microphone differentiates between the desirable and undesirable vibration by utilizing at least one motion sensor to produce a motion signal when an imp... | 04/21/2009 |
| 7463745 | Phase based feedback oscillation prevention in hearing aids A method for reducing oscillation of a feedback signal in a hearing aid and hearing aid configured according to the present method is provided. The method includes the steps of determining the phase of the feedback signal over a feedback path of the hearing aid and ... | 12/09/2008 |
| 7400738 | Acoustic module for a hearing aid device An acoustic module for a hearing aid device has at least one microphone and at least one earphone (acoustic output transducer) combined together as a unit, the unit including a signal-processing unit for feedback suppression that is connected with the microphone and... | 07/15/2008 |
| 7386142 | Method and apparatus for a hearing assistance system with adaptive bulk delay A hearing assistance system having adjustable bulk delay for cancellation of a time varying acoustic feedback path. The hearing assistance system including an FIR filter, coefficient update module, and delay rules module for programmable adaptive filtering. The hear... | 06/10/2008 |
| 7363063 | Mobile wireless communications device with reduced interference from the keyboard into the radio receiver A mobile wireless communications device includes a housing and circuit board carried by the housing. Radio frequency (RF) circuitry carried by the circuit board forms a transmitter and receiver. A processor is carried by the circuit board and operative with the RF c... | 04/22/2008 |
| 7340063 | Feedback cancellation with low frequency input The invention relates to a method for canceling feedback in an acoustic system comprising a microphone, a signal path, a speaker and means for detecting presence of feedback between the speaker and the microphone, the method comprising providing a LMS algorithm for ... | 03/04/2008 |
| 7336796 | Hearing assistive apparatus having sound replay capability and spatially separated components Hearing assistive apparatus can be implemented to include sound replay capability, the hearing assistive apparatus enabling operation in a replay mode (in which the hearing assistive apparatus replays sound that occurred prior to the current time), as well as in a c... | 02/26/2008 |
| 7324651 | Feedback suppression Acoustical signals impinging on an input converter are converted into a first electric signal by a controllably variable transfer characteristic. The transfer characteristic is dependent on the angle at which the acoustical signals impinge on the input converter. Th... | 01/29/2008 |
| 7318025 | Method for improving speech quality in speech transmission tasks A method for calculating the amplication factor, which co-determines the volume, for a speech signal transmitted in encoded form includes dividing the speech signal into short temporal signal segments. The individual signal segments are encoded and transmitted separ... | 01/08/2008 |
| 7308107 | Method for activating a hearing device A hearing device is activated by operating the hearing device in an operating mode in a first phase after supplying energy to internal circuitry of the hearing device, by operating the hearing device in a reduced operating mode in a second phase and by operating the... | 12/11/2007 |
| 7302070 | Oscillation detection The invention relates to oscillation detection and, more particularly, concerns a method and apparatus for identifying oscillation in a signal due to feedback, permitting appropriate action to be taken to suppress the oscillation. The method involves using an FFT de... | 11/27/2007 |
| 7292699 | Band-limited adaptive feedback canceller for hearing aids An improved method for adaptively cancelling acoustic feedback in hearing aids and other audio amplification devices. Feedback cancellation is limited to a frequency band that encompasses all unstable frequencies. By limiting the bandwidth of the feedback cancellati... | 11/06/2007 |
| 7289626 | Enhancement of sound quality for computer telephony systems Techniques for enhancing the sound quality of computer telephony systems are provided. In general, digital signals including telephony sounds are converted from the time domain to the frequency domain. If noise is detected in the frequency domain conversion of the d... | 10/30/2007 |
| 7289636 | Electronic earplug for monitoring and reducing wideband noise at the tympanic membrane An electronic earplug for wideband control of pressures at the tympanic membrane is presented. A unique methodology of determining effective component placement inside an earplug that provides acoustic isolation between the ambient noise and tympanic membrane is exp... | 10/30/2007 |
| 7286678 | Hearing device with peripheral identification units Hearing aid fitted with a central processing unit (1) having peripherals (3E, 3A) connected to its input and output. Each peripheral includes an identification unit (5) having an output connected to a first input of a comparator (9... | 10/23/2007 |
| 7280958 | Method and system for suppressing receiver audio regeneration The invention concerns a method (500) and system (100) for suppressing receiver audio regeneration. The method (500) includes the steps of receiving a communication signal (502), at a Radio Frequency (RF) unit (102), demodulating t... | 10/09/2007 |
| 7277554 | Dynamic range compression using digital frequency warping A dynamic range compression system is provided, using either a sample-by-sample or a block processing system. Such a system can be used, for example, in a hearing aid. The system, using a frequency-warped processing system, is comprised of a cascade of all-pass filt... | 10/02/2007 |
| 7254245 | Circuit and method for adaptation of hearing device microphones The microphones used in hearing devices normally possess different characteristic lines that are to be adapted to one another. For this purpose, the amplitude of an output signal of a first microphone and the amplitude of an output signal of a second microphone are ... | 08/07/2007 |
| 7254199 | Location-estimating, null steering (LENS) algorithm for adaptive array processing An adaptive multiple-tap frequency domain digital filter processes an input signal vector X from an plurality of spatially separated transducers that detect energy from a plurality of sources including a target energy source and at least one non-target energy source... | 08/07/2007 |
| 7248710 | Embedded internet for hearing aids A method is described to operate a hearing device with an input transducer (1), a signal processing unit (2) and an output transducer (4). The method comprises the steps of converting an acoustic input signal into a converted input signal, proce... | 07/24/2007 |
