AudioSourceRE (pronounced 'audio sorcery') are a company set up to commercialise the work of Irish academic Dr Derry Fitzgerald, who has spent nearly two decades studying the problem of source separation.

However, last November's AES Show in New York introduced a rival technology. Up to now, the market leaders in this field until have been Audionamix, who offer a range of tools targeting serious professionals in the worlds of music production, audio restoration, film, TV and broadcast, as well as the more affordable and largely preset-based XTRAX Stems. These can then be reprocessed, rebalanced and remixed until we run out of time or our desire for control has finally been satisfied. The resulting technology has earned the name 'source separation', and allows a single recording to be broken down into separate tracks representing individual vocal or instrumental sources. Over the last few years, clever people at the bleeding edge of DSP development have been beavering away to undermine the idea that any recording has to be considered a finished artifact. Records made direct to a mono or stereo master, flawed mixes made from multitracks that have since been wiped or destroyed, live recordings captured on handheld devices: all are now what they are, fixed and immune to our obsessive need to tweak. Until now, though, we've always had to accept that some recordings just are like that. In short, there is nothing so upsetting to the modern audio engineer as the thought that something is what it is and can't be changed. We obsess about separation in order to give ourselves the maximum freedom to manipulate individual sources. We close-mic so that we can choose artificial ambience later, and DI so that we aren't wedded to a particular guitar sound. We chafe if we can't move the musicians around on the studio floor, or tweak the settings on their amplifiers, or substitute our own mics for their favourite stage model. The goal of turning musical omelettes back into eggs gets ever closer, thanks to some unlikely cloud-based DSP wizardry!Īudio engineering goes hand in hand with the tendency to be a control freak.

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