Error while recording audio signal using WAV sink block in GNU radio

Asked Jan 23 '19 at 06:22

Active Nov 03 '19 at 11:20

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I am tring to get the audio file in wav format of a received FM signal grc used to receiver and record FM signal. But I am not able to read the file using python code.

import soundfile as sf
data, fs = sf.read('/home/dstlab2/Downloads/fm_record_RSM_v2_22_01_2019_txt_2.wav')

'data' shows 'array([], dtype=float64)'

edited Jan 25 '19 at 08:34

Marcus Müller

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asked Jan 23 '19 at 06:22

MSR

that should be an edit to your question, not a comment. – Marcus Müller Jan 23 '19 at 09:22
have you verified with anything but Python that the sound is not actually in there? – Marcus Müller Jan 23 '19 at 09:22
i can hear it in audio player like VLC – MSR Jan 25 '19 at 04:50
so, in that case, this doesn't seem to be a GNU Radio, but a Python `soundfile` problem. I simply wouldn't use that nonstandard library (where is it from? never heard of it). Why not simply use the built-in [`wave`](https://docs.python.org/2/library/wave.html) library, or `scipy.io.wavfile`? – Marcus Müller Jan 25 '19 at 08:33
Fine @MarcusMüller – MSR Feb 13 '19 at 09:34

Error while recording audio signal using WAV sink block in GNU radio

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