> I'm trying to convert an audio file into a spectrogram to do some > subsequent audio analysis. Is there anything on the C level to help > with this? > > The only thing I've found is the showspectrum filter, but this outputs > a picture. However I'd just like to read out the spectrum data, I'm > not interested in the visuals. > > How should I approach this?
A fair amount of audio analysis has to be done to generate a spectrogram though. And it represents a fraction of the information that is used to generate it. I’d suggest reading up on the Fourier transform and start at libavcodec/fft.h. _______________________________________________ ffmpeg-user mailing list [email protected] https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email [email protected] with subject "unsubscribe".
