Hearing aid having two receivers each amplifying a different frequency range
US8170249B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2007 |
| Grant date | May 1, 2012 |
| Priority date | — |
| Expiry date | Feb 22, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R25/48
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A hearing aid having two physically separate receivers, one for outputting low frequency (LF) acoustic sounds and another for outputting high frequency (HF) acoustic sounds. The LF receiver's output port is connected to a tube in which the HF receiver is inserted. The LF acoustic sounds either flow around the HF receiver, which include standoffs to space the HF receiver away from the inner tube wall, or through a channel in the HF receiver. At the output of the HF receiver, the LF and HF acoustic sounds are combined to form an acoustic signal that is transmitted to the ear canal. The LF receiver can be optimized for compliance, distortion, resonance frequency, and output. Its orientation is selected for reducing the overall size of the hearing aid. The HF receiver is smaller and placed far away from any microphone(s), reducing feedback effects, and may have a cylindrical or rectangular shape.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.