Panasonic Develops Estimation Technology using Brain Wave Patterns for Acceptable Maximum Sound Volume of Hearing Aids.
The perception of loudness differs from person to person and the acceptable sound volume limit depends on each person. Hearing aids must meet with such different needs and desires. The maximum sound volume is an important key factor for hearing aid fitting. The conventional method for adjusting volumes in the hearing aid fitting process uses the minimum volume hearing threshold level to calculate the maximum sound level. Because the results contain a large margin of error without factoring in individual differences, users need to go through an uncomfortable loudness test, causing them psychological stress and fatigue. Repeated listening to test tones can also be confusing to them. Therefore, it is difficult to precisely adjust the volume parameter of hearing aids to the true hearing ability for each user.
Using the new method, the maximum volume level for each user can be estimated objectively based on the EEG response to auditory stimuli, normal volume sound, in a short time and with a high degree of accuracy. This method enables to set the hearing aid more accurately in the maximum volume and use more comfortably.
This technology has the following features.
- Highly accurate estimation (a margin of error is +/-5 dB) of the acceptable maximum volume level is made based on the EEG pattern analyzing technology to auditory stimuli (pure tones) developed by Panasonic.
- Hearing examination can be finished in a short time, within five minutes or so.
- This method avoids the habituation to the auditory stimuli, so that the results are more objective without subjective response of the user.
- This method enables to reduce physical strain on the users, because the auditory stimuli use normal sounds heard in everyday life.
On this development, Panasonic holds 18 domestic patents and eight overseas patents, including pending applications.
A clinical evaluation of this technology started in cooperation with the Faculty of Medical Sciences, the University of Fukui, in November 2011.
A part of this technology was presented in the 41st Annual meeting of Japanese Society of Clinical Neurophysiology, held in Shizuoka Prefecture, on November 11, 2011.
Panasonic Corporation is a worldwide leader in the development and manufacture of electronic products for a wide range of consumer, business, and industrial needs. Based in Osaka, Japan, the company recorded consolidated net sales of 8.69 trillion yen (US$105 billion) for the year ended March 31, 2011. The company's shares are listed on the Tokyo, Osaka, Nagoya and New York (NYSE: PC) stock exchanges. For more information on the company and the Panasonic brand, visit the company's website at http://panasonic.net.
Global Public Relations Office Panasonic Corporation Tel: 03-6403-3040 Fax: 03-3436-6766
Copyright 2011 JCN Newswire. All rights reserved. www.japancorp.net
|Printer friendly Cite/link Email Feedback|
|Date:||Nov 28, 2011|
|Previous Article:||Mitsubishi Motors Announces Production, Sales and Export Figures for October 2011.|
|Next Article:||Mazda Releases Special Edition Verisa CLASSY STYLE in Japan.|