Apparatus and method for suppressing a feedback

An apparatus for suppressing feedback in an environment where a microphone and a loudspeaker are located, comprising means for embedding a test signal into a loudspeaker signal, a microphone signal or a modified microphone signal preferably using a psychoacoustic marking threshold using a pseudo noise test signal, means for determining a characteristic of a transmission channel in the environment between the loudspeaker and the microphone using the embedded test signal and the microphone signal, a filter for filtering the loudspeaker signal to obtain a filtered loudspeaker signal, wherein the filter is adjustable with respect to its filter characteristics to be adjusted by the means for determining the characteristic of the transmission channel, and means for subtracting the filtered loudspeaker signal from the microphone signal to the modifier to obtain th microphone signal, in which a feedback is reduced due to the loudspeaker signal. The feedback suppression concept creates an effective feedback suppression, is not affected by the particularly also an artist in his artistic presentation without audio quality loss.