
BPM detection... the old way! Luckily, for the iOS DJ there are better tools to use nowadays that go a lot further than counting beats with a hand clicker.
While I was loading tracks into various iOS DJing apps last week, I started wondering if there were apps that could help DJs work out the key and BPM of any music, not just digital files. Why would this be useful? Well, say you’re playing after a CD or vinyl DJ. Wouldn’t it be good to whip out your iPhone and quickly detect the BPM (and even the key) of the last track played, then effortlessly blend your next track in, perfectly harmonically matched and on the beat, as you take over digitally?
Or, if you’re a DJ who plays some music from digital, but you also use CDs and vinyl, wouldn’t it be nice to quickly “key” and BPM an old vinyl tune for easy mixing into your set, without having to rip it and run it through laptop key and BPM/DJ software? Turns out all of this is possible. Let’s look at some of your options:
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