Abstract
This paper proposes 2N_BILBP feature extraction method based on spectro-temporal features for sound event classification. Spectro-temporal features have a similar pattern to texture features in image processing. So, the concept of texture features is used in this digital signal processing field. Two-neighbour bidirectional local binary pattern (2N_BILBP) is used in this paper for feature extraction. 2N_BILBP is also compared with the previous method called bidirectional local binary pattern. Firstly, the input audio is converted into spectrogram using short-time Fourier transform and then gamma tone is used. The resulting gamma-tone-like spectrogram is then used to extract features. These features are used as feature features. Finally, the input audio is labelled using this feature vector. Evaluation is tested on three datasets called ESC-10 dataset, ESC-50 dataset and UrbanSound8K datasets called benchmark datasets.
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