I recently picked up an Arduino Uno starter kit and am looking forward to getting to play around with some musical applications. Arduino is an open source embedded platform which is ideal for beginners and hobbyists as it is cheap and relatively easy to use hardware and software. Arduino can sense the environment by receiving
Continue reading »Category Archives: "DSP"
Digital Room Equalization
Those of us that have set up a PA system for a gig (or watched on as another engineer did the same) are probably familiar with the principle of equalizing the room. The basic principle is to use a graphic equalizer to adjust the output of the PA to counteract the notches and boosts in
Continue reading »Going ‘under the hood’ of FIR filters
Here’s a useful article from EETimes.com on FIR filter design which uses some basic factorization to demonstrate how the filter works . The article’s author Kendall Castor-Perry takes us through a worked example of a 50Hz/60Hz hum (the bane of studio musician’s everywhere) rejection filter. You can also find Part 2 here.
Continue reading »Autocorrelation for Tempo Estimation
Automatic tempo estimation is a useful tool for musicians for the purposes of transcription and also for audio researchers as we can use the tempo of a piece of music to inform other types of analysis such as pitch detection or chord detection. Since musically significant events such as chord changes tend to occur on
Continue reading »Bringing Out The Centre
Following on from the previous post I wanted to take a look at how you can isolate the various tracks from stereo audio. Without having the official a cappella studio tracks in the first place, it is possible to recover these from the stereo audio. For the cleanest results unfortunately you’ll need the official instrumental
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