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Re: [fluid-dev] Re: What is the best way start fluidsynth with zero/low

From: Pedro Lopez-Cabanillas
Subject: Re: [fluid-dev] Re: What is the best way start fluidsynth with zero/low latency? (Louis B.)
Date: Mon, 25 May 2009 23:46:13 +0200
User-agent: KMail/1.9.6 (enterprise 20070904.708012)

On Monday, May 25, 2009, you wrote:
> It seems what we have both been pointing out, is that latency and CPU
> usage are 2 separate issues.  From what Louis said, I'm still not sure
> what problem he is experiencing.  Is it an issue with achieving low
> latency or an issue of the CPU consumption maxing out when playing
> certain MIDI files or many notes.

The subject of this whole thread is "What is the best way start fluidsynth 
with zero/low latency?" and the title of the wiki page you created is "Low 
latency tips", so it was pretty clear to me that we were talking about low 

As a general rule to solve problems, my method is to break big problems into 
smaller ones, and then try to solve one small problem at a time. So that is 
my advice to netbook users for sound functionality.

> The comment about 'Unfortunately specifying the hardware layer may
> bypass all of the desktop volume controls.' on the wiki, likely has to
> do with bypassing PulseAudio.  So that really belongs in a PulseAudio
> tips section.  Since if you are using ALSA mixer based audio controls,
> rather than PulseAudio mixer controls, that statement wont be true.
> It is a mess indeed :(  O how I wish PulseAudio could achieve low
> latency.  It seems like a potentially nice audio system.  Sad to say,
> but it seems like if a user wants user friendly low latency audio,
> CoreAudio on OS X is where it is at currently.  I'm keeping my fingers
> crossed, that Linux and audio for the desktop AND the musician will be
> sorted out soon.

I am not an Xbuntu user, but IMO if the distro is forcing the usage of  
PulseAudio, my advice (for low latency) would be to disable it. If the distro 
doesn't allow you to disable it, and the latency issue is very important to 
you, then my advice would be to install another Linux distro.


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