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Impulse Response Cache Size
Last post Fri, Apr 10 2015 by Dietz, 5 replies.
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Posted on Thu, Mar 05 2015 23:22
by VSL
Joined on Tue, Dec 02 2014, Posts

How should I set this? I searched the manuals for 'cache' but found no mention of this.

Posted on Sat, Mar 07 2015 01:31
by FlorianWalter
Joined on Thu, Sep 20 2007, Vienna / Munich, Posts 125

The cache is used to temporary store MIR impulse responses in RAM after they've been read from disk. That reduces the time to update the wet signal after you move an instrument or switch to a new venue (since reading from disk then can be skipped). It does not provide any benefit when you're running a 'static' project that is already set up.

While you're setting up a project, move instruments or switch venues the cache should be as large as possible (as long as you don't need the RAM to load samples). With a small cache size things might take a bit longer to update.

best, Florian

Florian Walter
Vienna Symphonic Library GmbH
Posted on Sat, Mar 07 2015 02:46
by VSL
Joined on Tue, Dec 02 2014, Posts

Thanks. This is good to know. I'll raise it when I'm moving things around in MIR. My only problem will remembering to lower it back down when I'm done moving things around.

Posted on Fri, Apr 10 2015 08:56
by gstoraa_2685
Joined on Mon, Jun 30 2003, Posts 36


Does this mean that MIR is not reading from disk while it is playing back music? So that it does,´t matter if the impulse responses reside on a slow or fast disk (other than for setup-time?)


Gaute Storaas


Posted on Fri, Apr 10 2015 09:32
by Dietz
Joined on Tue, Aug 06 2002, Vienna / Europe, Posts 7868

Exactly. All the individual, pre-rendered IRs for each Icon on a MIR Venue's stage have to be kept in RAM for the actual convolution process. In other words: Once you're set-up, the disk speed is irrelevant for MIR's own performance.

Be aware that the amount of time needed to re-read IRs from disk might be considerable, though - depending on the kind of adjustments you just applied.

Kind regards,

/Dietz - Vienna Symphonic Library
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