Patent ID: 8270643

Claim:
A hearing-aid system for determining directionality of a sound comprising: a first 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 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 third electric signal to said first audio device; where said first microphone unit includes a first microphone generating a first electric sound signal and a second microphone generating a second electric sound signal; where said first audio device further includes a first comparator to make a low frequency directionality determination by comparing said first and second electric signals; and generate a first directionality signal representing said low frequency directionality determination; and where said first comparator is further configured to make a high frequency directionality determination by comparing said first and second electric sound signals; and generate a second directionality signal representing said high frequency directionality determination.