Acoustic Scene Classification with Squeeze-Excitation Residual Networks

• URL: http://arxiv.org/abs/2003.09284v3
• Date: Fri, 26 Jun 2020 09:10:47 GMT
• Title: Acoustic Scene Classification with Squeeze-Excitation Residual Networks
• Authors: Javier Naranjo-Alcazar, Sergi Perez-Castanos, Pedro Zuccarello and Maximo Cobos
• Abstract summary: We propose two novel squeeze-excitation blocks to improve the accuracy of a CNN-based ASC framework based on residual learning. The behavior of the block that implements such operators and, therefore, the entire neural network, can be modified depending on the input to the block.
• Score: 4.591851728010269
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Acoustic scene classification (ASC) is a problem related to the field of machine listening whose objective is to classify/tag an audio clip in a predefined label describing a scene location (e. g. park, airport, etc.). Many state-of-the-art solutions to ASC incorporate data augmentation techniques and model ensembles. However, considerable improvements can also be achieved only by modifying the architecture of convolutional neural networks (CNNs). In this work we propose two novel squeeze-excitation blocks to improve the accuracy of a CNN-based ASC framework based on residual learning. The main idea of squeeze-excitation blocks is to learn spatial and channel-wise feature maps independently instead of jointly as standard CNNs do. This is usually achieved by some global grouping operators, linear operators and a final calibration between the input of the block and its obtained relationships. The behavior of the block that implements such operators and, therefore, the entire neural network, can be modified depending on the input to the block, the established residual configurations and the selected non-linear activations. The analysis has been carried out using the TAU Urban Acoustic Scenes 2019 dataset (https://zenodo.org/record/2589280) presented in the 2019 edition of the DCASE challenge. All configurations discussed in this document exceed the performance of the baseline proposed by the DCASE organization by 13\% percentage points. In turn, the novel configurations proposed in this paper outperform the residual configurations proposed in previous works.

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