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Learning the speech front-end with raw waveform CLDNNs

Sainath, Tara N., Weiss, Ron J., Senior, Andrew, Wilson, Kevin W., Vinyals, Oriol·2015·Interspeech 2015

Abstract

Learning an acoustic model directly from the raw waveform has been an active area of research. However, waveform-based models have not yet matched the performance of log-mel trained neural networks. We will show that raw wave-form features match the performance of log-mel filterbank ener-gies when used with a state-of-the-art CLDNN acoustic model trained on over 2,000 hours of speech. Specifically, we will show the benefit of the CLDNN, namely the time convolution layer in reducing temporal variations, the frequency convolution layer for preserving locality and reducing frequency variations, as well as the LSTM layers for temporal modeling. In addition, by stacking raw waveform features with log-mel features, we achieve a 3 % relative reduction in word error rate. 1.

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Metadata

Authors
Sainath, T. N., Weiss, R. J., Senior, A., Wilson, K. W., & Vinyals, O.
Venue
Interspeech 2015
Publisher
ISCA
Published
2015-09-06
Pages
1-5
ISSN
2308-457X (ISSN-L)
OpenAlex
W2398826216
Cited by
430
References
4
FWCI
26.51
Type
conference paper
Language
en
Open access
closed

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CoChat. (2026). Citation check: Learning the speech front-end with raw waveform CLDNNs. https://app.cochat.ai/papers/10.21437/interspeech.2015-1
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Sainath, T. N., Weiss, R. J., Senior, A., Wilson, K. W., & Vinyals, O. (2015). Learning the speech front-end with raw waveform CLDNNs. Interspeech 2015. https://doi.org/10.21437/interspeech.2015-1

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