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TS-RIR: Translated synthetic room impulse responses for speech augmentation

2021-03-31 04:45:35
Anton Ratnarajah, Zhenyu Tang, Dinesh Manocha

Abstract

We propose a method for improving the quality of synthetic room impulse responses generated using acoustic simulators for far-field speech recognition tasks. We bridge the gap between the synthetic room impulse responses and the real room impulse responses using our novel, one-dimensional CycleGAN architecture. We pass a synthetic room impulse response in the form of raw-waveform audio to our one-dimensional CycleGAN and translate it into a real room impulse response. We also perform sub-band room equalization to the translated room impulse response to further improve the quality of the room impulse response. We artificially create far-field speech by convolving the LibriSpeech clean speech dataset [1] with room impulse response and adding background noise. We show that far-field speech simulated with the improved room impulse response using our approach reduces the word error rate by up to 19.9% compared to the unmodified room impulse response in Kaldi LibriSpeech far-field automatic speech recognition benchmark [2].

Abstract (translated)

URL

https://arxiv.org/abs/2103.16804

PDF

https://arxiv.org/pdf/2103.16804.pdf


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