| 摘要 |
<p>In a signal processing system, a signal coming from a microphone (2) is applied to a loudspeaker (6) via a signal processing system (4). Since the transfer function of the loudspeaker (6) to the listeners substantially corresponds to the transfer function from the loudspeaker (6) to the microphone (2), the signal processing system is arranged to include estimating means for estimating the transfer function from the loudspeaker (6) to the microphone (2). For equalizing the transfer function from the microphone (2) to the listeners, the equalizer is set to a transfer function that is reciprocal to the transfer function from the loudspeaker (6) to the microphone. Preferably, the estimating means for estimating the transfer function from the loudspeaker (6) to the microphone (2) are formed by an adaptive filter (16) which has a transfer function that approaches the transfer function from the loudspeaker (6) to the microphone (2).</p> |
