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Audio Spectrograms

Audio Spectrograms. Physics of Music, Spring 2014. Frequency Spectra are Cool…. Frequency Spectra are Cool…. But spectrograms are cooler. Another view. Another view. And again…just for clarity. Reading/Interpreting Spectrograms. What would this sound like?.

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Audio Spectrograms

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  1. Audio Spectrograms Physics of Music, Spring 2014

  2. Frequency Spectra are Cool…

  3. Frequency Spectra are Cool…

  4. But spectrograms are cooler

  5. Another view

  6. Another view

  7. And again…just for clarity

  8. Reading/Interpreting Spectrograms

  9. What would this sound like?

  10. What’s a Spectrogram? I want one! Number of samples That overlap between Successive snapshots Track Number Number of samples in one time slice (box) Frequencies at which spectrogram is computed >> S = drawSpectrogram('jamSess3.wav', 1, 512, 100, [0:1:2000]);

  11. Slide Whistle Jam Band

  12. Same thing, different coloring

  13. Same, but logarithmic color scale • Easier to see relatively quiet sounds (desirable) • But now you can see some “noise” too (undesirable)

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