Spatial Diffuseness Features for DNN-Based Speech Recognition in Noisy and Reverberant Environments

9 Oct 2014Andreas SchwarzChristian HuemmerRoland MaasWalter Kellermann

We propose a spatial diffuseness feature for deep neural network (DNN)-based automatic speech recognition to improve recognition accuracy in reverberant and noisy environments. The feature is computed in real-time from multiple microphone signals without requiring knowledge or estimation of the direction of arrival, and represents the relative amount of diffuse noise in each time and frequency bin... (read more)

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