An audio processing device, comprising: - an input terminal configured to receive an audio input signal from an audio source, - an equalizing circuit having an input, an output and a control terminal, wherein the input is coupled to the input terminal and the equalizing circuit is configured to execute frequency characteristic correction processing for a signal received at the input, - an output circuit (8, 9, 3) coupled to the output of the equalizing circuit and configured to supply an audio output signal to a speaker for audio output from the speaker, - a signal analyzing circuit (11, 12) coupled to receive the audio input signal and configured to analyze a frequency characteristic of the audio input signal for detecting the presence of a signal power of the audio input signal at at least one frequency (F1, F2) of a room mode, - wherein the signal analyzing circuit (11, 12) stores a table (21, 22) containing multiple frequencies (F1, F2, F3) of respective room modes, wherein the table associates a respective predetermined onset time and a respective predetermined decay time of the room modes with a corresponding one of the multiple frequencies, - wherein the signal analyzing circuit (11, 12) is coupled to the control terminal of the equalizing circuit for dynamically adapting the frequency characteristic correction processing of the equalizing circuit at one or more frequencies (F1, F2) of the multiple frequencies (F1, F2, F3) of respective room modes over time when the presence of the signal power of the audio input signal at the one or more frequencies (F1, F2) of a room mode is detected, wherein the frequency characteristic correction processing is activated for the one or more frequencies of a room mode if the detection of the presence of the signal power lasts longer than a time threshold for the respective frequency of a room mode. - an input terminal configured to receive an audio input signal from an audio source, - an equalizing circuit having an input, an output and a control terminal, wherein the input is coupled to the input terminal and the equalizing circuit is configured to execute frequency characteristic correction processing for a signal received at the input, - an output circuit (8, 9, 3) coupled to the output of the equalizing circuit and configured to supply an audio output signal to a speaker for audio output from the speaker, - a signal analyzing circuit (11, 12) coupled to receive the audio input signal and configured to analyze a frequency characteristic of the audio input signal for detecting the presence of a signal power of the audio input signal at at least one frequency (F1, F2) of a room mode, - wherein the signal analyzing circuit (11, 12) stores a table (21, 22) containing multiple frequencies (F1, F2, F3) of respective room modes, wherein the table associates a respective predetermined onset time and a respective predetermined decay time of the room modes with a corresponding one of the multiple frequencies, - wherein the signal analyzing circuit (11, 12) is coupled to the control terminal of the equalizing circuit for dynamically adapting the frequency characteristic correction processing of the equalizing circuit at one or more frequencies (F1, F2) of the multiple frequencies (F1, F2, F3) of respective room modes over time when the presence of the signal power of the audio input signal at the one or more frequencies (F1, F2) of a room mode is detected, wherein the frequency characteristic correction processing is activated for the one or more frequencies of a room mode if the detection of the presence of the signal power lasts longer than a time threshold for the respective frequency of a room mode.