Comment by elteto

A more interesting story is behind the blog post linked in the article to someone else's implementation (which I also think contains a bit more detail than this one):

[0] https://www.royvanrijn.com/blog/2010/06/creating-shazam-in-j...

[1] https://www.royvanrijn.com/blog/2010/06/music-matching-part-...

Turns out he was contacted and threatened by some patent lawyers from Shazam for writing the above blog posts:

[2] https://www.royvanrijn.com/blog/2010/07/patent-infringement/

[3] https://www.royvanrijn.com/blog/2010/07/patent-publicity/

[4] https://www.royvanrijn.com/blog/2010/11/patent-infrigement-p...

And of course, the original HN post:

[5] https://news.ycombinator.com/item?id=1496683

It seems he eventually just told them to go pound sound (!!). Good for him!