[linux-audio-user] Re: [linux-audio-dev] music engine

[carmen]

> I heard from someone at Ableton that one guy wrote the Live engine in
> about 3 months.

yeah its not that complex. all you need is something that can play audio files realtime at varying pitches/speeds and apply FX chains, and a GUI to facilitate the arrangement and FX parameterization..

i was able to whip up a LIVE-esque timeline GUI in an afternoon using the Tk wavesurfer library: http://whats-your.name/pr/seq.png but have yet to find the optimal backend. heres my investigations so far:

 PD and xsample~/dssi~:  has the raw materials, but unfortunately doesnt work on amd64, and it its lack of subpatch polyphony means you would have to preallocate a set limit of active channels..and even a bit of disk access to load soundfiles is enough to get it kicked out of the jack graph due to its utter nonthreadedness..

 SC and Chuck: would likely work as well, but AFAIK neither one supports LADSPA or DSSI at the moment, SCLang definitely doesnt work on x86_64, and Chuck segfaulted as well but i'm guessing since its newer it was designed with 64bit compatibility and mind and the crash is some other issue

 SooperLooper + OSC-aware LADSPA Rack and Jack Patcher: seems like the jack graph would get crazy quick, but i will probably try this next, since the above options are out for me at the moment unless i setup a 32bit chroot, but maybe i will get good enough at C to be able to port sooperlooper to dssi~, since Om has eveyrhting else i'd need except a decent realtime-resampling audiofile module..