| 摘要 |
<p>The invention relates to a hearing instrument comprising: an earpiece (32) to be worn at least in part in a user's ear canal and comprising a shell (34), a loudspeaker (16) arranged within the shell for directing sound via a sound outlet channel (20) into a residual volume (18) of the ear canal, and an ear canal microphone (22) for capturing an ear canal audio signal from sound within the residual volume of the ear canal via a cavity (24) of the shell comprising at least one opening (40, 50) towards the residual volume of the ear canal; means (12) for generating an input audio signal; a compensator unit (26, 28, 30) for adding a compensation audio signal derived from the ear canal audio signal to the input audio signal in order to generate an output audio signal supplied to the loudspeaker in a manner so as to reduce or avoid an ear canal occlusion effect, with the loudspeaker, the ear canal microphone and the compensator unit forming an active control loop, wherein the cavity, including the at least one opening, is designed so as to act as an acoustic low pass filter having a cut-off frequency in the range from 0.2 kHz to 6 kHz.</p> |
