[LAU] [ANN] Bristol 0.60.0 Command Line Interface

Andrew C countfuzzball at gmail.com
Wed Apr 21 19:25:53 UTC 2010


Going slightly OT here, but attached is a bank of sounds for the prophet52
emulator that I've created.

I hope you all enjoy them!

Andrew Coughlan

On Wed, Apr 21, 2010 at 1:49 PM, Nick Copeland <nickycopeland at hotmail.com>wrote:

>  To get this now you need to select Unison, and start bristol with the
> parameters
> below. In the current release the code does a default invocation of the
> emulator
> parameters which limit the voices to something like the original, eg, the
> mini gets
> a single voice (that rolls all the time irrespective of what notes you give
> it) and
> the Prophet-5 gets, er, five. It should introduce a little 'detune' to make
> the sound
> move a bit more but. It is pretty arbitrary detune, it doesn't change with
> time, only
> with key events and I was considering making it a bit more like temperature
> drift
> over time which at the moment it isn't.
>
> startBristol -prophet -voices 32
>
> When you select the emulator I configure some defaults that get reported in
> the
> output. The assigned voices should all get a different amount of detune as
> that is
> how it is coded.
>
> Andrew reported that this 32 voice unison, dual oscillator synth, currently
> uses
> about 65% CPU on a 2.X GHz processor, or about 2% per voice although you
> will need a late 0.50 or 0.60 to do that. Previous releases (0.40) required
> a bit
> more CPU, about 10% per voice, which means this same attempt would make
> Jack very, very unhappy - a realtime thread asking for 320% CPU. This was
> one
> of the main reasons bristol was not really considered to be RT safe (there
> were
> other reasons too but they should also have been removed in the later
> releases).
>
> The CPU footprint can be reduced further by selecting -lwf, or light weight
> filters, they should cut a half off again for a small change in quality. If
> you
> want to use more CPU you can too, documented in the ChangeLog.
>
> Regards, Nick.
>
>
> "we have to make sure the old choice [Windows] doesn't disappear”.
> Jim Wong, president of IT products, Acer
>
>
>
>
> > Date: Wed, 21 Apr 2010 11:49:56 +0200
> > From: julien at c-lab.de
> > To: countfuzzball at gmail.com
> > CC: linux-audio-user at lists.linuxaudio.org
> > Subject: Re: [LAU] [ANN] Bristol 0.60.0 Command Line Interface
>
> >
> > Hi Andrew!
> > That'd be cool! I'm curious to hear them. 64 oscillator unison indeed.
> :-)
> > Wow!
> > Kindest regards
> > Julien
> >
> > --------
> > Music was my first love and it will be my last (John Miles)
> >
> > ======== FIND MY WEB-PROJECT AT: ========
> > http://ltsb.sourceforge.net
> > the Linux TextBased Studio guide
> > ======= AND MY PERSONAL PAGES AT: =======
> > http://www.juliencoder.de
> > _______________________________________________
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