Patent ID: 7864971

Claim:
A hearing-aid system for determining directionality of a sound comprising a first hearing aid audio device to be placed on one side of a user's head and having a first microphone unit to convert said sound to a first electric signal, a second hearing aid audio device to be placed on the other side of the user's head and having a second microphone unit to convert said sound to a second electric signal, said second electric signal representing a low-frequency sound signal, a transceiver unit to interconnect said first and second audio device and communicate said second electric signal to said first audio device, where said first audio device further includes: a first comparator to compare said first and second electric signals and a first directionality signal from said comparison, a first signal processing unit to process said first electric signal in accordance with said first directionality signal, and a first speaker unit to convert said processed first electric signal to a first processed sound.