Abstract: An audio processing device for suppressing noise in an audio signal includes a receiving unit to receive an input audio signal, a transform unit to generate an input spectrogram based on the input audio and process the input spectrogram to normalize spectral energies across one or more frequency ranges of the input spectrogram to generate a modified input spectrogram, a noise suppression network to process the modified input spectrogram to generate an output spectrogram, and an inverse transform unit to generate an output audio signal based on the output spectrogram. The noise suppression network includes an encoder module including a plurality of complex convolutional layers, a gated recurrent unit, GRU, network including a plurality of GRU cells, and a decoder module including a plurality of complex deconvolutional layers.

Abstract: An audio processing device for suppressing noise in an audio signal includes a receiving unit to receive an input audio signal, a transform unit to generate an input spectrogram based on the input audio, a noise suppression network to process the input spectrogram and an inverse transform unit to generate an output audio signal based on an output spectrogram from the noise suppression network. The noise suppression network includes an encoder module including a plurality of complex convolutional layers, a gated recurrent unit, GRU, network including a plurality of GRU cells, and a decoder module including a plurality of complex deconvolutional layers.