Adaptation of a classification of an audio signal in a hearing aid

摘要

A method determines the classification of an audio signal in dependence on a comparison of two difference sums of audio features over time periods of different length. Thus, an adequately exact yet quickly reacting adaptation of the classification in changing hearing situations is ensured. The method is advantageously used in a hearing aid. The audio signal is processed in different ways on the basis of the classification.

主权项

1. A method for adapting a classification of an audio signal, which comprises the steps of:
providing the audio signal; generating a temporal sequence of values of an audio feature of the audio signal; forming a temporal sequence of differences of consecutive values; summing the temporal sequence of differences to give a first sum over a first time period; summing the temporal sequence of differences to give a second sum over a second time period, being longer than the first time period; comparing the first sum with the second sum; and performing a change of the classification of the audio signal in dependence on the comparing step.