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Hearing device and corresponding method for ownvoices detection

A hearing aid device and sound technology, applied to hearing aids, electrical components, etc., can solve problems such as interference with effective signal extraction, and achieve the effect of avoiding false images and erroneous control.

Active Publication Date: 2007-01-17
シバントスゲゼルシャフトミットベシュレンクテルハフツング
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  • Abstract
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AI Technical Summary

Problems solved by technology

Here too, the self-sound cannot be recognized as a separate sound source, which interferes with the extraction of the actual useful signal, which is mostly also a speech signal

Method used

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  • Hearing device and corresponding method for ownvoices detection

Examples

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Embodiment Construction

[0021] The examples described in detail below represent preferred embodiments of the invention.

[0022] According to the invention, the problems that arise with AGC, BSS and intelligent directional microphones when the hearing aid wearer speaks by himself are solved by the detection of the own voice by means of a separate ear canal microphone or internal ear canal microphone MI. according to figure 1 , the microphone is located in the ear canal GG like the headset of the hearing aid selected here. In this example, two external microphones ME 1 and ME 2 are located outside the ear canal GG for receiving ambient sound from the environment of the user or hearing aid wearer.

[0023] The basis for the detection of the own voice is a continuous comparison of the signals received by the external hearing aid microphones ME 1 and ME 2 and the internal ear canal microphone MI. For this purpose, a level analysis PA is performed on the microphone signal in this case. The self-sound d...

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Abstract

The present invention relates to hearing apparatus and a method for own-voice detection. A hearing aid wearer's own voice frequently leads to artifacts and response errors in various hearing aid algorithms. It is provided that the user's own voice to be detected by a special analysis device, and the hearing aid algorithms can be controlled as a function of detection. This can be achieved by providing a microphone (MI) in the auditory channel (GG) whose signal level is compared with that of an external microphone (ME1, ME2). This allows some form of control, e.g., the automatic gain control (AGC) of a hearing aid to be 'frozen', in the presence of the hearing aid wearer's own voice.

Description

technical field [0001] The invention relates to a hearing device, in particular a hearing aid, with a microphone for receiving ambient sound from the user's environment. Furthermore, the invention relates to a corresponding method for operating the hearing aid. Background technique [0002] In conventional hearing aids it is not possible to distinguish the hearing aid wearer's own voice from external sound sources. This can lead to artifacts and erroneous responses in different hearing aid algorithms, for example: [0003] a) Automatic gain reduction at high sound levels in automatic gain control (AGC). If the sound level changes sequentially multiple times, the gain also changes strongly accordingly. This means that, for example, ambient or microphone noise is amplified differently depending on the effective sound level, which is perceived by the hearing aid wearer as a pump effect. To avoid this excitation effect, the decay time of the AGC (ie the time or time constant...

Claims

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Application Information

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IPC IPC(8): H04R25/00
CPCH04R25/453H04R25/405
Inventor 沃尔克马·哈马彻
Owner シバントスゲゼルシャフトミットベシュレンクテルハフツング
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