Separable Temporal Convolution plus Temporally Pooled Attention for Lightweight High-performance Keyword Spotting
Abstract
Keyword spotting (KWS) on mobile devices generally requires a small memory footprint. However, most current models still maintain a large number of parameters in order to ensure good performance. In this paper, we propose a temporally pooled attention module which can capture global features better than the AveragePool. Besides, we design a separable temporal convolution network which leverages depthwise separable and temporal convolution to reduce the number of parameter and calculations. Finally, taking advantage of separable temporal convolution and temporally pooled attention, a efficient neural network (ST-AttNet) is designed for KWS system. We evaluate the models on the publicly available Google speech commands data sets V1. The number of parameters of proposed model (48K) is 1/6 of state-of-the-art TC-ResNet14-1.5 model (305K). The proposed model achieves a 96.6% accuracy, which is comparable to the TC-ResNet14-1.5 model (96.6%).
Cite
@article{arxiv.2108.12146,
title = {Separable Temporal Convolution plus Temporally Pooled Attention for Lightweight High-performance Keyword Spotting},
author = {Shenghua Hu and Jing Wang and Yujun Wang and Wenjing Yang},
journal= {arXiv preprint arXiv:2108.12146},
year = {2021}
}