Metadata for Audio
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Poster CD5-2
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How Efficient Is MPEG-7 for General Sound
Recognition?
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Hyoung-Gook Kim, Juan Jos�
Burred, Thomas Sikora
Technical University Berlin,
Berlin, Germany
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| Our challenge is to analyze/classify video sound track content for indexing purposes. To this end we compare the performance of MPEG-7 Audio Spectrum Projection (ASP) features based on several basis decomposition algorithms vs. Mel-scale Frequency Cepstrum Coefficients (MFCC). For basis decomposition in the feature extraction we evaluate three approaches: Principal Component Analysis (PCA), Independent Component Analysis (ICA), and Non-negative Matrix Factorization (NMF). Audio features are computed from these reduced vectors and are fed into a hidden Markov model (HMM) classifier. Our conclusion is that established MFCC features yield better performance compared to MPEG-7 ASP in general sound recognition under practical constraints. |
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