| 摘要 |
Each of the two hearing devices (12, 14) of a binaural hearing system (10) comprises an environment sound input (16, 16') generating an environment sound signal (26; 26'), a link unit (18, 18') exchanging the environment sound signals (26; 26') between the two hearing devices (12; 14), and electric circuitry (20, 20') comprising a filter bank (32) processing the environment sound signal (26; 26') and the transmitted environment sound signal (26'; 26) thereby generating processed environment sound signals (42; 42') and processed transmitted environment sound signals (42'; 42) for a plurality of frequency channels. Each of the electric circuitries (20, 20') is configured to €¢ use the processed environment sound signals (26; 26') of the respective hearing device (12; 14) and the processed transmitted environment sound signals (26'; 26) from the other hearing device (14; 12) to estimate a respective time delay between the both;
€¢ apply the respective time delay to the transmitted environment sound signal (26'; 26) to generate a time delayed transmitted environment sound signal (48'; 48);
€¢ scale the time delayed transmitted environment sound signal (48'; 48) by a respective interaural level difference to generate an equalized transmitted environment sound signal (52'; 52);
€¢ subtract the equalized transmitted environment sound signal (52'; 52) from the environment sound signal (26; 26') to receive an equalized-cancelled environment sound signal (56; 56'); and
€¢ use the equalized-cancelled environment sound signal (56; 56') to generate an output sound signal (30; 30'). |
