Show HN: Small C Program to Convert Photos to Audio

Re:Show HN: Small C Program to Convert Photos to Audio by wrigby on Tuesday June 09, 2015 @12:12PM (#9686727)

I would expect to see the frequency response of the speaker + mic combination show up as darker and lighter horizontal bands in the image (since these spectrograms are plotted with frequency on the y axis). It might look really cool!

Edit: depending on the time alignment / phase response of the speakers, you might see the low frequency parts of the image get distorted to the right.

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Re:Show HN: Small C Program to Convert Photos to Audio by kylophone on Tuesday June 09, 2015 @12:18PM (#9686766)

Give it a try! The output file contains both very low frequencies and also frequencies up to Nyquist, in this case 24kHz.

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Re:Show HN: Small C Program to Convert Photos to Audio by wrigby on Tuesday June 09, 2015 @12:43PM (#9686910)

I'll try to give it a shot! What are you using to generate the spectrograms?

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Re:Show HN: Small C Program to Convert Photos to Audio by kylophone on Tuesday June 09, 2015 @12:47PM (#9686951)

  sox -c 1 -r 48000 -b 32 -e float -t raw out.raw -n spectrogram

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Re:Show HN: Small C Program to Convert Photos to Audio by _lce0 on Tuesday June 09, 2015 @04:11PM (#9688253)

please post your results!

science is fun

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