Hearing device

The innovative design of a hearing device without sound-conducting elements and with an open front volume loudspeaker enclosure, combined with a damping mat and soft magnetic alloy box, addresses feedback and pumping issues, improving high-frequency sensitivity and robustness.

EP4106348B1Active Publication Date: 2026-06-24SIVANTOS PTE LTD
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Patent Information

Application Number
EP2022171850
Authority / Receiving Office
EP · EP
Patent Type
Patents
Current Assignee / Owner
Priority Date
2021-06-14
Filing Date
2022-05-05
Publication Date
2026-06-24
Estimated Expiration
2042-05-05

AI Technical Summary

Technical Problem

Hearing devices with high-performance loudspeakers experience pumping effects and feedback issues due to structure-borne and airborne noise, particularly in the frequency ranges of approximately 1 to 2 kHz and 3 to 5 kHz, which reduce amplification and performance.

Method used

The hearing device design eliminates the use of sound-conducting elements like sound tubes and incorporates an open front volume loudspeaker enclosure with a rigid connection to a damping element, utilizing a damping mat with a fluid-filled chamber and a soft magnetic alloy box to minimize vibrations and feedback.

Benefits of technology

This design effectively prevents pumping effects and reduces feedback, enhancing loudspeaker sensitivity in the high-frequency range, particularly in the speech frequency range, while maintaining robustness against shocks.

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Abstract

The invention relates to a hearing device (1) comprising a loudspeaker (6) with a loudspeaker diaphragm (24) for generating acoustic signals, a drive acting on the loudspeaker diaphragm (24), and a loudspeaker housing in which the drive and the loudspeaker diaphragm (24) are received; a housing (2) enclosing an interior space; and a loudspeaker box (12) arranged in the interior space, in which the loudspeaker (6) is fluid-tightly sealed from the interior space, and which has a sound outlet opening (22) coupled to a sound conductor (18, 20) leading from the housing (2). The loudspeaker (6) is arranged in the loudspeaker box (12) without a sound channel element arranged within the loudspeaker box (12) that couples the loudspeaker (6) to the sound outlet opening (22).
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