Hearing Aids with marked directional characteristics cannnot be tested in ordinary test chambers because the sound field in those chambers is more or less diffuse. So far these measurements deshalb in had to be performed in an anechoic chamber. The TWS  system can substitute the anechoic chamber for most tests. 

The special speaker developed by  TWS  has a small emission surface and a special shape preventing mostly reflections at  the speakters casing. It is placed on the floor of the lab. The hearing aid is  placed ca. 50 cm above the speaker.

The software separates the direct sound from the reflected sound using mathematical methods. This procedure works quite good in the frequency range covered by hearing aids.

Should you have questions about this system, please send a Email to Contact Address or call us.

You find the telephone numbers on our Contact page.