The Underscore Archives

On 2 Aug 2007, at 11:38, Rick Edwards wrote:

> On 02/08/07, Stefan Goodchild <stefan.goodchild at realworld.co.uk>  
> wrote:
>>>
>>> it really works - everyone can be a deejay now.
>>
>> Everyone could have been a DJ before this surely?
>>
>> Clever tech though..
>
> Didn't see the show but judging from the website it'll only mix tracks
> that lend themselves to simple mixing anyway (i.e. highly distinctive
> repetitive beat patterns), isn't this just simple Fourier Analysis and
> the application of a transform to a waveform to get a matching beat
> pattern (ok, so I couldn't write it but I have a feeling the maths
> ain't that hard)?

CDJs have been able to do it for years of course but his is an  
extension of that tech that apparently does more music analysis of  
the whole track to see where to start the mix etc so the mixes are  
smoother etc.  It also does eq based mixes which mean the mixes are  
smoother.

More of a slicker use of existing tech than anything new.

And yeah..  Has to be simple 4/4 music with a strong beat or it'll  
flail around like nobodies business...

FFT beat detectors are available for loads of platforms, I'm using  
one for Processing (http://processing.org) for doing live sound  
reactive visuals.

Stef

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