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Improving Vision-inspired Keyword Spotting Using a Streaming Conformer Encoder With Input-dependent Dynamic Depth Apple Machine Learning Research

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​Using a vision-inspired keyword spotting framework, we propose an architecture with input-dependent dynamic depth capable of processing streaming audio. Specifically, we extend a Conformer encoder with trainable binary gates that allow to dynamically skip network modules according to the input audio. Our approach improves detection and localization accuracy on continuous speech using Librispeech’s 1,000 most frequent words while maintaining a small memory footprint. The inclusion of gates also allows the average amount of processing without affecting the overall performance to be reduced… Using a vision-inspired keyword spotting framework, we propose an architecture with input-dependent dynamic depth capable of processing streaming audio. Specifically, we extend a Conformer encoder with trainable binary gates that allow to dynamically skip network modules according to the input audio. Our approach improves detection and localization accuracy on continuous speech using Librispeech’s 1,000 most frequent words while maintaining a small memory footprint. The inclusion of gates also allows the average amount of processing without affecting the overall performance to be reduced…  Read More  

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