Patents
Sitemap › H04 - Electric communication technique › H04R - Loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers; Deaf-aid sets; Public address systems › H04R 29 - Monitoring arrangements; Testing arrangements
Patents for H04R 29 - Monitoring arrangements; Testing arrangements (4,957)
06/1999
06/24/1999WO1999031937A1 Automatic system for optimizing hearing aid adjustments
06/22/1999US5915029 Automated testing apparatus for electronic component
05/1999
05/27/1999WO1999026453A1 Feedback cancellation apparatus and methods
05/20/1999DE19814832A1 Quarz controlled loudspeaker amplifier system
05/12/1999EP0915639A1 Method for binaural adjusting of hearing aids
04/1999
04/28/1999EP0912075A1 Method for testing the sound attenuation of hearing protecting means mounted in helmets
04/28/1999EP0910849A1 Feedback capable earphones and a computerized audiometer which contains them
04/14/1999EP0909114A2 Method and apparatus for indicating speaker faults
04/08/1999CA2304822A1 Public alarm apparatus and method for cochlear implants
04/06/1999CA2149687C Long-time balancing of omni microphones
03/1999
03/30/1999US5889210 Apparatus for detecting semiconductor bonding defects
03/16/1999US5883961 Sound system
03/11/1999WO1999012388A1 Method of measuring and preventing unstable feedback in hearing aids
02/1999
02/24/1999EP0898364A2 Compensating filters
02/09/1999US5870483 Sound insulating cap for sound level meters
02/09/1999US5870481 For determining an interaural level difference present in a test subject
01/1999
01/28/1999DE19725436A1 Measuring and displaying transmission characteristics of digital hearing aid containing speech processor
01/20/1999EP0891685A1 Triggering a measurement process for evaluating the quality of audio and/or speech signals
01/12/1999CA2143227C Noise-canceling differential microphone assembly
12/1998
12/23/1998EP0886456A2 Method and apparatus for operating a sound system
12/16/1998EP0884926A1 Method and device for optimized processing of an interfering signal when recording sound
12/02/1998CN1041042C Noise cancellation apparatus, and telephone set having same
12/01/1998US5844994 Automatic microphone calibration for video teleconferencing
11/1998
11/25/1998EP0879502A1 A method for implementing a sound reproduction system for a large space, and a sound reproduction system
11/19/1998WO1998052382A1 Improved artificial ear and auditory canal system and means of manufacturing the same
11/19/1998CA2287164A1 Improved artificial ear and auditory canal system and means of manufacturing the same
11/10/1998US5835611 Method for adapting the transmission characteristic of a hearing aid to the hearing impairment of the wearer
10/1998
10/28/1998EP0873667A1 Sound system
10/28/1998EP0815707B1 Signal quality determining device and method
10/22/1998DE19580412C1 Compensating for mutual interference between loudspeakers and acoustic distortion of room
10/20/1998US5825897 Noise cancellation apparatus
10/20/1998US5825894 Spatialization for hearing evaluation
10/14/1998EP0870298A2 Noise cancellation and noise reduction apparatus
10/13/1998US5822718 Device and method for performing diagnostics on a microphone
10/13/1998CA2145699C Voice actuated switching system
10/07/1998EP0868830A1 Virtual electroacoustic audiometry for unaided, simulated aided, and aided hearing evaluation
09/1998
09/30/1998EP0824845B1 Process for controlling a programmable or program-controlled hearing aid for its in-situ fitting adjustment
09/30/1998EP0815705B1 Signal quality determining device and method
09/29/1998US5815584 Automatic detection of shorted loudspeakers in automotive audio systems
09/29/1998US5815580 Compensating filters
09/24/1998WO1998041973A1 Feedback capable earphones and a computerized audiometer which contains them
09/24/1998CA2283650A1 Feedback capable earphones and a computerized audiometer which contains them
09/23/1998EP0700622A4 An integrated video and audio signal distribution system for use on commercial aircraft and other vehicles
09/16/1998CN2291769Y Broadcasting volume controller for passenger train
07/1998
07/16/1998WO1998031191A1 Apparatus and method for simulating a human mastoid
07/08/1998EP0792568A4 Noise cancellation apparatus
07/08/1998EP0792567A4 Noise cancellation headset for use with stand or worn on ear
07/02/1998DE19647399C1 Gehörangepaßte Qualitätsbeurteilung von Audiotestsignalen Hearing Adapted quality assessment of audio test signals
06/1998
06/23/1998US5771298 Apparatus and method for simulating a human mastoid
06/18/1998WO1998026633A1 Device and method for signal quality determination
06/17/1998EP0848573A2 In-the-ear hearing aid with directional microphone system
06/04/1998DE19649595A1 Microphone transmission factor measurement method
06/03/1998CN1183885A Signal quality determining device and method
06/03/1998CN1183884A Signal quality determining device and method
06/03/1998CN1183883A Signal quality determining device and method
06/03/1998CN1183832A Adaptive noise cancelling arrangement, noise reduction system and transceiver
06/02/1998US5761295 Telephone instrument and method for altering audible characteristics
05/1998
05/28/1998WO1998023130A1 Hearing-adapted quality assessment of audio signals
05/27/1998EP0826140A4 Intensity acoustic calibrator
05/27/1998CN1183018A Transmitter capable of reducing background noise
05/26/1998US5757933 In-the-ear hearing aid with directional microphone system
05/26/1998US5757930 Apparatus and method for testing attenuation of in-use insert hearing protectors
05/13/1998EP0841570A2 Automatic detection of shorted loudspeakers in automotive audio systems
05/12/1998US5751819 Level meter for digitally-encoded audio
05/08/1998CA2220386A1 Automatic detection of shorted loudspeakers in automotive audio systems
04/1998
04/30/1998WO1998018295A1 Triggering a measurement process for evaluating the quality of audio and/or speech signals
04/23/1998DE19730716A1 Triggerung eines Meßverfahrens zur Qualitätsbeurteilung von Audio- und/oder Sprachsignalen Triggering a measurement method for assessing the quality of audio and / or voice signals
04/21/1998US5742689 Method and device for processing a multichannel signal for use with a headphone
04/14/1998US5740256 Adaptive noise cancelling arrangement, a noise reduction system and a transceiver
04/14/1998US5740255 High fidelity audio cable comparator and method therefor
04/07/1998US5737428 For detecting the highest relative signal of input signals
03/1998
03/31/1998US5734715 Process and device for adaptive identification and adaptive echo canceller relating thereto
03/24/1998US5732143 Noise cancellation apparatus
03/17/1998US5729658 Evaluating intelligibility of speech reproduction and transmission across multiple listening conditions
03/17/1998US5729612 Method and apparatus for measuring head-related transfer functions
03/04/1998EP0826140A1 Intensity acoustic calibrator
02/1998
02/25/1998EP0824845A1 Process for controlling a programmable or program-controlled hearing aid for its in-situ fitting adjustment
02/04/1998CN1172573A Noise cancellation headset for use with stand or worn on ear
02/04/1998CN1172422A Noise cancellation apparatus
02/03/1998US5715321 Noise cancellation headset for use with stand or worn on ear
01/1998
01/15/1998WO1997025790A3 Noise cancellation and noise reduction apparatus
01/07/1998EP0815707A1 Signal quality determining device and method
01/07/1998EP0815706A1 Signal quality determining device and method
01/07/1998EP0815705A1 Signal quality determining device and method
12/1997
12/30/1997US5703797 Method and apparatus for testing acoustical devices, including hearing aids and the like
12/17/1997EP0813350A2 Device for measuring the characteristics of a microphone
12/16/1997US5699435 Microphone probe tubing
12/09/1997US5696832 Apparatus for limiting and displaying electrical fader level signals
12/03/1997EP0809900A2 An adaptive noise cancelling arrangement, a noise reduction system and a transceiver
11/1997
11/12/1997EP0806092A1 A directional acoustic signal processor and method therefor
11/06/1997DE19618019A1 Transmission parameter adjustment arrangement for acoustic hearing arrangement
11/06/1997DE19618017A1 Acoustic hearing arrangement for simulating human hearing defects
11/06/1997DE19618016A1 Realistic acoustic hearing arrangement for selection of hearing aid
10/1997
10/16/1997DE19623715C1 Equipment for measurement of free-field characteristic of e.g. directional microphone
09/1997
09/30/1997US5673325 Noise cancellation apparatus
09/18/1997WO1997025834A3 Method and device for processing a multi-channel signal for use with a headphone
09/03/1997EP0792568A1 Noise cancellation apparatus
09/03/1997EP0792567A1 Noise cancellation headset for use with stand or worn on ear
08/1997
08/14/1997WO1997023068A3 An adaptive noise cancelling arrangement, a noise reduction system and a transceiver
07/1997
07/31/1997WO1997027724A1 Sound system
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