| CPC H04R 3/02 (2013.01) [H04R 2460/01 (2013.01)] | 15 Claims |
|
1. An audio device comprising:
an interface for provision of an audio input signal based on one or more audio signals received from an auxiliary device;
a receiver for provision of an output sound into an ear canal of a user based on an audio output signal;
a feed-forward microphone for provision of a feed-forward input signal based on ambient sound;
a distributor for provision of a first feed-forward input signal and a second feed-forward input signal each based on the feed-forward input signal;
a feed-back microphone for provision of a feed-back input signal based on the output sound and a noise sound in or at the ear canal of the user;
a feed-forward filter for provision of a feed-forward output signal based on the first feed-forward input signal, wherein the feed-forward filter is representative of an acoustic signal path from the feed-forward microphone to the ear canal of the user;
an intermediate filter module for provision of an intermediate signal representative of a desired sound to be reproduced by the receiver, wherein the intermediate filter module comprises a hear-through filter for provision of a hear-through signal based on the second feed-forward input signal and wherein the intermediate filter module is configured to provide the intermediate signal based on the hear-through signal and the audio input signal;
a first mixer for provision of an error signal based on the feed-back input signal and the intermediate signal;
a feed-back filter for provision of a feed-back output signal representative of noise sound picked up at the feed-back microphone, the feed-back output signal based on the error signal; and
a second mixer for provision of the audio output signal based on the feed-forward output signal and the feed-back output signal.
|