Method and device for frequency-selective processing of an audio signal with low latency

A device for processing an input audio signal or an input audio signal in a hearing aid, the device comprising:

• a first analytical filter bank configured to divide the input audio signal into a plurality of first frequency bands in a first frequency splitting process;
• at least one further analytical filter bank disposed downstream of said first analytical filter bank and configured to divide the first frequency bands of a first subgroup of the first frequency bands into a plurality of frequency subbands in at least one further frequency splitting process;
• a signal processing unit for frequency-selective processing or amplification of the input audio signal having been divided into the first frequency bands or the frequency subbands;
• at least one predictor configured to apply a prediction to at least one of the first frequency bands of the first subgroup or the frequency subbands derived from the first frequency bands of the first subgroup, to compensate for latency differences between the first frequency bands and the frequency subbands as a result of at least one of the frequency splitting processes;
• and
• a synthetic filter bank apparatus disposed downstream of said signal processing unit and configured to combine the input audio signal having been divided into the first frequency bands or the frequency subbands and frequency-selectively processed into an output audio signal.