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This looks very cool, but it's not clear what it means.

I wonder if it is captivating simply because it syncs cool graphics to audio, like those Winamp visualization filters in the old days.

I can’t say for certain but I’m nearly positive I’ve seen ads for this on Facebook or Insta or something like that.

Looking lovely. This looks like converting mel spectrograms to 3D

Absolutely gorgeous as an art piece.

site has so little information there doesn't seem to be much to discuss

There seems to be some additional information in a video on the creator's YouTube page:

https://www.youtube.com/watch?v=cPFmcVtGnh0

edit: There appears to be more information in a variety of the creator's videos, but it looks like the projection from birdsong-to-3D is (probably simplified) taking the Mel spectrogram (40 features from this, unclear as to what they are) and passing it to PCA to get 3D vectors.

The creator discusses a real-time version here: https://www.youtube.com/watch?v=prhQqpAxrm8

Seeing Birdsong