For those interested in audio fingerprinting, There was a company called Echo Nest that open sourced a full audio fingerprinting stack (server + client) called Echoprint [1] but it seems they've been bought by Spotify now and there's been no development since on echoprint.<p>I used it back in the day and I recall it working very well.<p>There's also a paper on the technology [2]<p>[1] <a href="https://github.com/search?utf8=%E2%9C%93&q=echoprint&type=" rel="nofollow">https://github.com/search?utf8=%E2%9C%93&q=echoprint&type=</a><p>[2] <a href="http://mediatechnology.leiden.edu/images/uploads/docs/wt2015_echoprint.pdf" rel="nofollow">http://mediatechnology.leiden.edu/images/uploads/docs/wt2015...</a>
Shazam, for me, (maybe Maps is a close second) the most magical app on my phone, the <i>thing from the future</i> that I would never have imagined being real if you told the Me from 20 years ago. It is sometimes so fast, under 5 seconds. Just wonderfully great. It makes me feel superhuman. It really is one of those extra sensory powers that we have recently gained with these universal gadgets in our pockets.
Discussed at the time: <a href="https://news.ycombinator.com/item?id=9870408" rel="nofollow">https://news.ycombinator.com/item?id=9870408</a>.