Spatialization for hearing evaluation
US5825894A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 20, 1995 |
| Grant date | Oct 20, 1998 |
| Priority date | — |
| Expiry date | Dec 20, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04R29/001
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A hearing evaluation and hearing aid fitting system provides a fully immersive three-dimensional acoustic environment to evaluate unaided, simulated aided, and aided hearing function of an individual. Digital filtering of one or more signal sources representing speech and other audiologically significant stimuli according to selected models and digitally controlled signal processing parameters, including audio sources, spatializing coordinates, acoustic boundaries, signals representing one or more simulated hearing aids, and individualized body/external ear transfer functions synthesizes a simulated acoustic condition for presentation to a hearing-impaired person for objective and subjective hearing evaluation via an intra-canal prosthesis that is positioned in the ear canal, and that incorporates a microphone probe to measure in-the-ear-canal responses at a common reference point near the tympanic membrane during unaided, simulated aided, and aided hearing evaluation, thus providing measurements that are directly correlated across all phases of hearing assessment during the fitting process of a hearing aid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.