[LAU] Ardour export question...

alexus / dotcommon dotcommon at autistici.org
Wed Mar 11 18:16:58 UTC 2015


On 2015-03-08 21:58, Fons Adriaensen wrote:
> On Sun, Mar 08, 2015 at 08:34:42PM +0000, alexus / dotcommon wrote:
> 
>> (Please excuse if this is a stupid question...)
>> 
>> I am learning Ardour doing some practice on my system (Debian
>> stable, RT kernel, RT tuning, MAudio Audiophile 2496 PCI, 3GHz 4core
>> CPU, 8GB RAM, JACK buffer 512). Working with a 3min stereo audio
>> (24bit, 88.1kHz) I have noticed DSP goes to 100% when exporting
>> (WAV)...
>> Is it normal (simply Ardour is using all the available resources
>> during the export) or something is going wrong (and I will have
>> glithces/pops in the output file)?
> 
> It's perfectly normal. Export puts Jack in 'freewheeling' mode
> which means that it doesn't sync to the soundcard but starts
> a new cycle as soon as the previous one has ended (the sound
> card output gets 'silence' for output meanwhile, and input is
> discarded). So things will run 'as fast as possible' which
> means CPU load will go up to 100%.

Great.
Thank you for the clarification.

Ciao!

-- 
al3xu5 / dotcommon

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