PatentDOI
Directional/omnidirectional hearing aid microphone with support
TLDR
In this paper, a hearing aid is described which comprises an outer front opening and an outer rear opening which are connectable to the respective sides of a membrane in a microphone within the housing of the hearing aid for directional use, and mechanical means for closing the outer rear open for omnidirectional use, in which said closing means is formed and arranged so as in the closing position thereof to establish a narrow acoustically dimensioned sound passageway from the outer opening not closed to the side of the membrane corresponding to the closed outer opening.Abstract:
A hearing aid is described which comprises an outer front opening and an outer rear opening which are connectable to the respective sides of a membrane in a microphone within the housing of the hearing aid for directional use, and mechanical means for closing the outer rear opening for omnidirectional use, in which said closing means is formed and arranged so as in the closing position thereof to establish a narrow acoustically dimensioned sound passageway from the outer opening not closed to the side of the membrane corresponding to the closed outer opening. According to one embodiment, the mechanical closing means is a slide displaceable along the housing wall in which the opening to be closed is formed, and in which the narrow acoustically dimensioned passageway is an elongated recess in the displaceable slide.read more
Citations
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PatentDOI
Hearing aid device incorporating signal processing techniques
TL;DR: In this paper, a hearing compensation system for the hearing impaired comprises a plurality of bandpass filters having an input connected to an input transducer and each bandpass filter having an output connected to the input of one of a multiplicative AGC circuits.
Patent
Wireless communication with probing bandwith
TL;DR: In this article, the first and second devices are configured to switch to another wireless communication channel based at least in part on the signal strength of the probe signal for each of a plurality of potential wireless communication channels.
PatentDOI
In-the-ear hearing aid with directional microphone system
TL;DR: In this paper, an in-the-ear hearing aid with a shell and a face plate is presented, where the shell is molded to custom fit a hearing aid user's ear and a switch mechanism is included having an operator extending through the housing for switching the hearing aid between a non-directional mode and a directional mode.
PatentDOI
A directional hearing system
Michael A. Lehr,Bernard Widrow +1 more
TL;DR: In this article, a directional acoustic receiving system is constructed in the form of a necklace including an array of two or more microphones mounted on a housing supported on the chest of a user by a conducting loop encircling the user's neck.
PatentDOI
High fidelity earphone and hearing aid
TL;DR: A high fidelity earphone or hearing aid utilizes an acoustic path from a location near where the sound is delivered to the ear, to a position near the backside of the sound-producing diaphragm as mentioned in this paper.
References
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PatentDOI
Hearing aid having adjustable directivity
TL;DR: In this paper, a hearing aid with a two-port microphone for adjustable directivity is described, where the microphone front port is connected to a front port in the casing by a soft resilient rubber tube and the microphone rear port was connected by another soft resilient tube to an outlet in the top of the casing, which outlet is covered by a slider.
PatentDOI
Microphone with different directional modes
Aoki Toshio,Suzuki Tomohide +1 more
TL;DR: In this article, a built-in microphone for a tape recorder, comprising a diaphragm responsive to sound waves and sensing means behind it in the microphone case, has at least one opening to admit the sound waves to impinge on the inner surface of the diaphrasm so as to counteract the effect of the sound wave impinging on the outer surface.
Patent
Directionally variable hearing aid
TL;DR: In this paper, a hearing aid employs a differential transducer having two sound receiving ports and operative to convert sound information into an electrical output and to which sound energy can be directed in one of two modes.