Music, Illustrated

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art, analysis, audio
Signal processing meets music theory.

spectrograms

Gallery.


I specialize in high resolution audio images.

With semitone resolution, mapping the color wheel to the octave reveals tonal relationships.

Wynton Marsalis: detail
Wynton Marsalis, 'Blues' (detail)


The bass register can be difficult to resolve.

whale song detail
whale song (detail)


Characteristic shapes recur, here's an intro.


analysis

Spectral post-processing.


Calculating the spectral auto-correlation matrix (following this paper [fxpal.com]) benefits from sharp spectrograms.

auto-correlation
Beatles, 'Here comes the Sun', auto-correlation matrix. Easy to spot the break.


More processing can produce a multi-resolution edge-detector:
edge detection
Beatles, 'All my Loving', spectrogram with auto-correlation matrix and edge detection.


Which can be used for note and chord finding:
multichart




theory

Observations.



Black and white sets each are a pentatonic scale. Grey keys complete either set to a diatonic scale.

frequency range
Frequency range chart


Available intervals by bandwidth
Available intervals by bandwidth




visualization

Music visualization videos can reveal subtle elements, and are fun to watch.

Some examples.
© 2000-2018   N. Resnikoff