qiuqiangkong
commented
5 years ago Hi,
if the mode is set as 'magnitude', then the x obtained from [f, t, x] = signal.spectral.spectrogram is np.float64, not complex type. Then the x = x.astype(np.float32) is only used to reduce the disk usage to save the features.Best wishes,
Qiuqiang
From: hangtingchen notifications@github.com Sent: 10 December 2018 11:36:26 To: yongxuUSTC/sednn Cc: Subscribed Subject: [yongxuUSTC/sednn] Problem with "magnitude" mode (#21)
Hi Yong Xu, I have read your code and meet some problem of the "magnitude" mode in func calc_sp
The operation "astype" just throws away the imag part of a complex, which i have tested under numpy 1.13.3. Use np.abs to take magnitude. Is this a bug or something else ?
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hangtingchen
Hi Yong Xu, I have read your code and meet some problem of the "magnitude" mode in func calc_sp
https://github.com/yongxuUSTC/sednn/blob/c7efa60200f53f7b6653abb7051f6b39cbbc413b/mixture2clean_dnn/prepare_data.py#L261
The operation "astype" just throws away the imag part of a complex, which i have tested under numpy 1.13.3. Use np.abs to take magnitude. Is this a bug or something else ?