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Looper's Delight
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Hmmm ... not sure this made it the frirst time ... strange ...... >Yeah, from a programmers point of view ......woohoo! > >I was just looking at some of those libraries again lately .... for >anyone else who happens to write C++, the documentation on Macs >Cocoa API includes these libraries ... they are well written and >comprehensive (the docs and the libraries). > >And yes, you can send clock signals from AU plugins to host apps ... >though I should mention that very view apps actually utilize this as >it makes for pretty intense code (dynamic bpm is one of those things >not so well handled as it is). > >Branching to BPM tracking/shifting ...... > >Most external sources have rather shotty clocks (+-1ms is typical >jitter) ... which is crappy and hard to handle. > >Internal sources are much better, but then you have to ask the >question what happens when we shift bpm on some track that is >already playing ? For midi instruments and traccks its not a >problem, you just play the notes faster ... but for recorded audio >you need to either: > >1) shift the freq to play quicker (and then the pitch changes) or .. >2) splice the audio (cut from on position to another, fading in >between to avoid audio nonlinearities) > >Number 2 is the way to go, but most applications haven't really >gotten there yet. I have been looking at this a lot lately because >it's an area of personal interest for me. You can devise beat >splicing algorithms that follow certain beats (straight, triplets, >clave, etc) and then intelligently splice from segment to segment if >you know the initial bpm of the audio recording .... for long >recordings this is difficult, but for short ones (ie loops) this is >quite simple. Much cooler is when you stack/overdub on these loops >AFTER they have been spliced/bpm shifted. > >For example ... take a loop and speed it up to 3x normal play, but >use a splicing algorithm that splits it up and plays segments that >fall where triplets would be on the clip. Now stack/overdub on that >track and make some noise ....... when you re-sync the loop to >normal play, the result will be the recorded audio after the inverse >of the bpm shift (which is a recording that exists only where the >triplets would be on the audio clip). This way you can devise some >pretty wild beats ...... > >Anyway, thats my 2 cents .. ciao >A > > > >At 02:14 AM 6/12/2009, you wrote: >> > - New audio unit properties in the Audio Unit framework that let >audio >> > units send MIDI data to host applications >> >>Like sending midi clock from a looper au-plugin? That would be great! >> >>--- >>Sjaak >>http://euroloopfest.com/ >>http://sjaakovergaauw.com/ >> >> >>__________________________________ >>Scarlet schrapt download limiet! >>Scarlet NO LIMIT nu slechts 19,95 EUR >>Ga naar www.scarlet.be voor meer info!