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Posted to commits@mxnet.apache.org by GitBox <gi...@apache.org> on 2018/01/04 06:40:21 UTC

[GitHub] DabiaoMa opened a new issue #9302: nd.contrib.fft issue

DabiaoMa opened a new issue #9302: nd.contrib.fft issue
URL: https://github.com/apache/incubator-mxnet/issues/9302
 
 
   Hi,
   
   I am currently using nd.contrib.fft to compute STFT(short time Fourier transform) of audio wavs to implement the distilled WaveNet. 
   I noticed that even I set the weight of STFT loss to 0 (0 * STFT_loss), there are still gradients backward from STFT_loss to parameters, and this behavior causes the gradient to be NaN if the weight is not 0 (1 * STFT_loss)
   I have triple checked my implemented and this is the only possible place that may raise an error.
   
   Best,
   

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