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- W2963881567 abstract "Robust and far-field speech recognition is critical to enable true hands-free communication. In far-field conditions, signals are attenuated due to distance. To improve robustness to loudness variation, we introduce a novel frontend called per-channel energy normalization (PCEN). The key ingredient of PCEN is the use of an automatic gain control based dynamic compression to replace the widely used static (such as log or root) compression. We evaluate PCEN on the keyword spotting task. On our large rerecorded noisy and far-field eval sets, we show that PCEN significantly improves recognition performance. Furthermore, we model PCEN as neural network layers and optimize high-dimensional PCEN parameters jointly with the keyword spotting acoustic model. The trained PCEN frontend demonstrates significant further improvements without increasing model complexity or inference-time cost." @default.
- W2963881567 created "2019-07-30" @default.
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- W2963881567 date "2017-03-01" @default.
- W2963881567 modified "2023-10-16" @default.
- W2963881567 title "Trainable frontend for robust and far-field keyword spotting" @default.
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- W2963881567 doi "https://doi.org/10.1109/icassp.2017.7953242" @default.
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