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Electrical Audio Signal Processing Systems And Devices > Hearing Aids, Electrical > Noise Compensation Circuit > Feedback Suppression Feedback SuppressionFeedback Suppression patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/22/07 - 20070269068 - Method for suppressing feedback and for spectral extension in hearing devices Feedback whistle in hearing devices is intended to be able to be suppressed without loss of output of the useful signal. To this end, it is provided to establish or predetermine a frequency range which is susceptible to feedback. From an input signal which has a spectral component in the ... 09/27/07 - 20070223755 - Output phase modulation entrainment containment for digital filters Method and apparatus for entrainment containment in digital filters using output phase modulation. Phase change is gradually introduced into the acoustic feedback canceller loop to avoid entrainment of the feedback canceller filter. Various embodiments employing different output phase modulation approaches are set forth and time and frequency domain examples are ... 07/19/07 - 20070165893 - 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 input sound signal after giving a gain thereto. If the level of a sound ... 02/08/07 - 20070030990 - 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 fitting piece, and at least two ... 12/28/06 - 20060291681 - Hearing aid comprising adaptive feedback suppression system A hearing aid comprises an input transducer (2), a subtraction node for subtracting a feedback cancellation signal from the electrical input signal thereby generating a processor input signal, a signal processor (3), an output transducer (4), a pair of equalization filters (7a, 7b) for selecting from the processor input and ... 12/21/06 - 20060285709 - Hearing aid device with means for feedback compensation With a hearing aid device, filter parameters of filters are to be adjusted for feedback suppression. It is hereby proposed that test signals are emitted via an earpiece in order to estimate the transmission behavior of the feedback path, and response signals to these test signals are recorded by a ... 10/05/06 - 20060222195 - 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 unit (302) connected to the microphone (202) and generating a processed electric ... 12/01/05 - 20050265568 - 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 hearing assistance system adjustable for continuous bulk delay adjustments. The hearing assistance system ... 10/27/05 - 20050238191 - Acoustic testing devices and methods An acoustic testing device and method. The acoustic testing device tests acoustics of a speaker of an electrical device, and includes a first member and a second member. The speaker is disposed in the first member. The second member is combined with the first member, and includes a sound case ... 10/13/05 - 20050226447 - 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 shifting only the phase ... 09/15/05 - 20050201579 - 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. The first electric signal is processed and a resulting signal is applied ... 07/07/05 - 20050147266 - Hearing aid with noise suppression, and operating method therefor Concurrent signal paths going pass a hearing aid bring about interferences in the auditory canal. These interferences are compensated by estimating an interfering signal from the input signal disturbed by interference from a microphone and applying to the interfering signal a transfer function, with which the concurrent acoustic signal path ... 06/23/05 - 20050135646 - Feedback compensation device and method, and hearing aid device employing same A feedback compensator for a hearing aid device has a filter arrangement that splits a signal path, to implement an adaptive feedback compensation with only one buffer memory, two splitting nodes, and two addition nodes. The feedback compensation ensues only in the feedback-susceptible frequency range of the input signal. In ... ### FreshPatents.com Support |