tokens: To understand better whether it is possible to perform audio stylization in the time domain , we investigate a variety of networks which take a time domain audio signal as input to their network : using the real and imaginary components of a Discrete Fourier Transform ( DFT ) ; using the magnitude and unwrapped phase differential components of a DFT ; using combinations of real , imaginary , magnitude , and phase components ; using the activations of a pre - trained WaveNet decoder ; and using the activations of a pre - trained NSynth encoder .