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From: "Soulpsychadelicide" <mail@...>
Date: Tue, 3 Jun 2003 at 1:36:33 PM
Subject: [LAM] Regarding CPU Usage with Audio Unit Sampler Instruments
Message #140253
hello, OSX 10.2, Logic 6.0, 1GB RAM, 1.4Ghz DP... i've been wanting to throw away my hardware sampler in favor of the superior timing of logic's AU, but only if loading around 50MB of samples into a song won't deplete all of my resources. i only have had the chance to use VSAmp, and a simple triad chord playing a 5MB sound takes up 75% of my RAM/Audio resources. so i have 3 questions: 1. is it normal for a sampler instrument to use RAM rather than Disk I/O? 2. is there any way to run an instrument like this more efficiently? 3. how does Emagic's EXS24 perform in terms of resources? (mine expired before i could try it) thanks for your assistance... Jon Zaremba -------------------------------------- http://www.savetheuniverse.us "You should believe that the zombies are your dead next door neighbours, not monsters from hell, because that's what they are." - Everett Burrell http://www.soulpsychadelicide.com --------------------------------------
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From: George Leger III <george3@...>
Date: Tue, 3 Jun 2003 at 3:05:48 PM
Subject: Re: [LUG] [LAM] Regarding CPU Usage with Audio Unit Sampler Instruments
Message #140265
This is a reply to #140253.
On Tuesday, June 3, 2003, at 11:36 AM, Soulpsychadelicide wrote: > so i have 3 questions: > > 1. is it normal for a sampler instrument to use RAM rather than Disk > I/O? Normally does this, only streams off disc with the VM option on.. > 2. is there any way to run an instrument like this more efficiently? EXS is very efficient until you use the filters. It uses more dsp when it is on, but most samples have the filter off.. > 3. how does Emagic's EXS24 perform in terms of resources? (mine > expired > before i could try it) Pretty good. The VSM lets you do "giga sampler" type streaming from disc, and it works pretty good. I never used a sample on a regular basis until the EXS > > thanks for your assistance... > Your welcome George ________________________________________________________ My Home : www.utopiaparkwaymusic.com EXS/Logic FAQ: http://logicfaq.omega-art.com/ "Reet to tee to tee to tee to teeeeeeee" Frank Zappa " All our dreams can come true, if we have the courage to pursue them" Walt Disney
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From: "John Pitcairn" <johnp@...>
Date: Tue, 3 Jun 2003 at 5:42:34 PM
Subject: Re: [LAM] Regarding CPU Usage with Audio Unit Sampler Instruments
Message #140273
This is a reply to #140253.
--- In logic-users@yahoogroups.com, "Soulpsychadelicide" <mail@s...> wrote: > i only have had the chance to use VSAmp, and a simple triad chord > playing a 5MB sound takes up 75% of my RAM/Audio resources. Ouch! That seems a bit strange - my VSamp use consists of a 40MB multitimbral drumkit (about 600 samples), which I run at 16 voices max, and that uses very little CPU with a very full beat running, though the drumkit does take 12 seconds to load. Are you using the resonant filters? That does require more CPU (but not _that_ much). Perhaps you should email VSamp's author? The EXS is also very CPU-friendly from what I remember. But unfortunately it ain't realtime-multitimbral without a very CPU-hungry workaround... John Pitcairn ----------------------------------------------------------------- Got midi fader/knob hardware? Want to control & automate Logic 5? Fadermapper environment demo: http://www.revolver.co.nz/fadermapper/ v2.0 arriving soon, with Logic 6, motorfader & rotary dial support... -----------------------------------------------------------------
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From: "Soulpsychadelicide" <mail@...>
Date: Tue, 3 Jun 2003 at 7:20:46 PM
Subject: RE: [LUG] [LAM] Regarding CPU Usage with Audio Unit Sampler Instruments
Message #140277
This is a reply to #140273.
> > i only have had the chance to use VSAmp, and a simple triad chord > > playing a 5MB sound takes up 75% of my RAM/Audio resources. > > Ouch! That seems a bit strange - my VSamp use consists of a 40MB > multitimbral drumkit (about 600 samples), which I run at 16 voices > max, and that uses very little CPU with a very full beat running, > though the drumkit does take 12 seconds to load. Are you using the > resonant filters? That does require more CPU (but not _that_ much). > Perhaps you should email VSamp's author? thanks for the response. i was using the filters, that may explain some part of the problem. what are your system specs? (os, ram, etc...)? just so that i can compare with how mine is working... i'm going to do some more experimenting before i email the author. > The EXS is also very CPU-friendly from what I remember. But > unfortunately it ain't realtime-multitimbral without a very CPU-hungry > workaround... what do you mean by "realtime" multitimbral? it is a multitimbral instrument, correct? thanks again, jon z. http://www.savetheuniverse.us
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From: "John Pitcairn" <johnp@...>
Date: Tue, 3 Jun 2003 at 10:04:42 PM
Subject: Re: [LUG] [LAM] Regarding CPU Usage with Audio Unit Sampler Instruments
Message #140278
This is a reply to #140277.
--- In logic-users@yahoogroups.com, "Soulpsychadelicide" <mail@s...> wrote: > what are your system specs? (os, ram, etc...)? Powerbook G4 1GHz, 1GB RAM, RME HDSP multiface/cardbus, OS X 10.2.6, Logic 6.1. I almost never use the VSamp resonant filters. > what do you mean by "realtime" multitimbral? it is a multitimbral > instrument, correct? Yes. Unlike the EXS, a single plugin instance of VSamp can playback 16 different instruments on 16 midi channels from realtime midi input, so it's possible to use it with my midi drum pads and have 256 kicks loaded (ch1&2), 128 snares (ch3), 128 hihats (ch4) etc. I can sit at the drums hitting pads and dialling through lots of available sounds to quickly setup a kit with no onscreen dicking-around required at all. If I were using a non-multitimbral plugin sampler like the EXS, I'd be limited to one instance, thus 128 notes/sounds in total, unless I were to use the CPU-hogging i/o plugin trick for realtime play of multiple Audio Instrument tracks. Given the price of the EXS, I consider that unacceptable. John Pitcairn ------------------------------------------------------------------ Midi controller learn in Logic 5. Soft takeover. Lots of memories. Tracks remember control assignments. Write track automation. Fadermapper environment demo: http://www.revolver.co.nz/fadermapper/ v2.0 arriving soon, with Logic 6, motorfader & rotary dial support... ------------------------------------------------------------------
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