deep_waveform_dnn implementation SPEECH ACOUSTIC MODELING FROM RAW MULTICHANNEL WAVEFORMS http://www.cs.huji.ac.il/~ydidh/waveform.pdf train time domain filter coefficient (beamformer) from waveform CNN layer's weights are regarded as beamformer scripts for training and plot beampattern and brainogram we can see 1 null(around 90 degree) in beampattern