Method for Enhancing Noisy Speech using Features from an Automatic Speech Recognition System
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsHakan Erdogan, John Hershey, Shinji Watanabe, Jonathan Le Roux
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Abstract
A method transforms a noisy speech signal to an enhanced speech signal, by first acquiring the noisy speech signal from an environment. The noisy speech signal is processed by an automatic speech recognition system (ASR) to produce ASR features. The the ASR features and noisy speech spectral features are processed using an enhancement network having network parameters to produce a mask. Then, the mask is applied to the noisy speech signal to obtain the enhanced speech signal.
Claims8
A method for transforming a noisy speech signal to an enhanced speech signal, comprising steps:
- acquiring the noisy speech signal from an environment;
- processing the noisy speech signal by an automatic speech recognition system (ASR) to produce ASR features;
- processing the ASR features and noisy speech spectral features using an enhancement network having network parameters to produce a mask;
- and
- applying the mask to the noisy speech signal to obtain the enhanced speech signal, wherein the steps are performed in a processor.
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