Most hearing aids dispensed to individuals suffering from hearing loss in the US have frequency lowering processing features. Real ear measurement “REM” verification systems are used to verify and validate the performance of hearing aids and their various frequency lowering processing features. Current REM verification systems, however, do not provide a convenient way to visualize the effect that frequency lowering algorithms have on a signal produced by a hearing aid. Moreover, current REM verification systems are only capable of displaying the effect of frequency lowering on a single input frequency at a time. There is a need for a simple, efficient, and intuitive method for audiologists, clinicians, and technicians to visualize changes when assessing the performance of modern hearing instruments.
At the U.S. Army’s Walter Reed Medical Center, Dr. Douglas Brungart has developed a novel method for visualizing the performance of frequency lowering hearing aids. The technique permits intuitive, arrow-based visualization and multi-dimensional graphs to display shifts/changes when assessing the performance of modern hearing instruments.
- Intuitive, color-coded visualization capabilities: easy to use, arrow-based visualization of gain differences at different input levels, thereby providing a more complete and intuitive analysis than conventional REM verification systems
- Single display screen capabilities: unlike a conventional REM display, a single screen display may present all data acquired to intuitively differentiate signal changes including distinguishing between “frequency compression” and “frequency transposition” changes
- Signal distortion tracking: the level of distortion caused by each frequency lowering technique may be tracked to assess signal fidelity, in particular distortions at relevant speech frequencies (4-16 Hz), processing delays and cross-correlations
- US patent 9,807,519 is available for licensing
- Potential for collaboration with Army researchers