An analysis of content-based classification of audio signals using a fuzzy c-means algorithm |
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Authors: | Mohammad A. Haque Jong-Myon Kim |
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Affiliation: | 1. School of Electrical Engineering, University of Ulsan, Ulsan, 680-749, South Korea
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Abstract: | Content-based audio signal classification into broad categories such as speech, music, or speech with noise is the first step before any further processing such as speech recognition, content-based indexing, or surveillance systems. In this paper, we propose an efficient content-based audio classification approach to classify audio signals into broad genres using a fuzzy c-means (FCM) algorithm. We analyze different characteristic features of audio signals in time, frequency, and coefficient domains and select the optimal feature vector by employing a noble analytical scoring method to each feature. We utilize an FCM-based classification scheme and apply it on the extracted normalized optimal feature vector to achieve an efficient classification result. Experimental results demonstrate that the proposed approach outperforms the existing state-of-the-art audio classification systems by more than 11% in classification performance. |
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