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Greg_L
Banned
I tried that SIR convolution reverb thing once. It convoluted my brain into mush. I don't get what the big deal is or how it even works. 
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fishkarma
New member
I don't get what the big deal is or how it even works.
Lol you'd understand the big deal with convolution reverb if you knew how it works/sounds
Its basically giving you the sound of a real room that has been turned into a Impulse Response file and is ready to be added to your tracks. Meaning you can download some of the nicest studios rooms sound
it can also simulate a guitar cab which is handy for those pesky amp emulators
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Greg_L
Banned
Okay so how is that different than any other reverb plug-in like Classic Reverb or Glaceverb - both of which are super-adjustable? And what the fuck is an "impulse response file" anyway?
I've looked and looked, and I can't find anything that explains in retard terms what this thing is, how it works, and why it's supposedly so bad ass.
pipelineaudio
Well-known member
though not the most technically accurate description, think about it this way:
You make a recording of a firing pistol in an anechoic chamber and so have a perfectly dry recording of that pistol sound as a baseline reference point.
You then make a recording of firing that pistol in a church, keeping the recording going till all the reverb has died down.
You then place the original anechoic recording of the pistol, and the pistol shot in the church into a *deconvolver* application, which (ok Im playing WAY fast and loose with the facts to illustrate the point, so please pedants, dont jump my ass) figures out the math needed to make that dry pistol sound sound like that reverberated pistol sound. The deconvolver subtracts the pistol from the sound and gives you an impulse file
the difference between an impulse and a dsp verb is that the convo file gives you a REAL room, it doesnt try to simulate it, it IS it
A few enterprising souls figured out that you could also run test tones thru hardware devices in various ways and grab those as well
You make a recording of a firing pistol in an anechoic chamber and so have a perfectly dry recording of that pistol sound as a baseline reference point.
You then make a recording of firing that pistol in a church, keeping the recording going till all the reverb has died down.
You then place the original anechoic recording of the pistol, and the pistol shot in the church into a *deconvolver* application, which (ok Im playing WAY fast and loose with the facts to illustrate the point, so please pedants, dont jump my ass) figures out the math needed to make that dry pistol sound sound like that reverberated pistol sound. The deconvolver subtracts the pistol from the sound and gives you an impulse file
the difference between an impulse and a dsp verb is that the convo file gives you a REAL room, it doesnt try to simulate it, it IS it
A few enterprising souls figured out that you could also run test tones thru hardware devices in various ways and grab those as well
NL5
Unpossible!
Aren't most of the impulses from hardware? So they would be a simulation of a simulation? And, even if they are from a real room, they are still a simulation, aren't they?
I'm not knocking SIR, but it's still not a REAL space.........
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Greg_L
Banned
Lol. What a pain in the ass. 
I've been playing with my SIR convolution reverb, and I'm just not hearing what the big deal is. There's also a ton of latency. How do I get rid of that latency?
I've been playing with my SIR convolution reverb, and I'm just not hearing what the big deal is. There's also a ton of latency. How do I get rid of that latency?
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fishkarma
New member
Maybe you just loaded in bad Ir files? it all depends on the room that its "being" if the room sounded shit then so will the impulse. if the room is a top quality studio then it should sound pretty much like a top quality studio.
as for latency adjust your buffer size? or maybe get a faster computer that kinda math requires a lot of processing power!
(or you could just print the track, but that would mean not recording in realtime)
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Greg_L
Banned
lol. Fuck this shit.
I only get the latency when using it as a send, but whatever. This things a pain in the ass.
I only get the latency when using it as a send, but whatever. This things a pain in the ass.
Sonixx
New member
an Impulse is the frequency response of the system captured be it a room, guitar cab, drum, etc.
a convolution is basically applying the the Impulse (frequency response) to the signal.
Convolution is drastically different than other types of reverb which basically synthesize the response. Impulse is the actual captured response of something.
a convolution is basically applying the the Impulse (frequency response) to the signal.
Convolution is drastically different than other types of reverb which basically synthesize the response. Impulse is the actual captured response of something.
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fishkarma
New member
lol. Fuck this shit.
I only get the latency when using it as a send, but whatever. This things a pain in the ass.
Too bad. maybe you don't like the sound of real rooms? or just stand latency
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Greg_L
Banned
Too bad. maybe you don't like the sound of real rooms? or just stand latency
I like the sound of real rooms, but I'm not hearing the great benefit. I play hard rock and punk. Orchestral and cathedral-like reverbs aren't that necessary.
Anyway, I can use it as an insert just fine. I don't know why the latency is so bad as a send.
Anyone know how to fix this?
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Greg_L
Banned
And sorry ecktronic for hijacking your thread. 
Monsterpop
New member
I like the sound of real rooms, but I'm not hearing the great benefit. I play hard rock and punk. Orchestral and cathedral-like reverbs aren't that necessary.
Anyway, I can use it as an insert just fine. I don't know why the latency is so bad as a send.
Anyone know how to fix this?
hey mate
cant you get rid of the latency whilst recording by muting the track as you play?
thats what ive discovered i can do with Pro Tools,,
but dunno about other stuff.
up until then,it was fuckin MURDER,
and id to Feck about with the "PLAYBACK ENGINE" AND "BUFFER SIZE"
AND ALL THAT SHITE
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fishkarma
New member
What about lead? Nothing says "I am the 200ft guitar god" like a huge amount of cathedral reverb on a lead guitar!
Sorry can't fix it unless its a matter of buffer size in PT (even then I'd have to connect up and figure it out)
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Greg_L
Banned
No man, it aint that kind of latency. Thanks though.hey mate
cant you get rid of the latency whilst recording by muting the track as you play?
thats what ive discovered i can do with Pro Tools,,
but dunno about other stuff.
up until then,it was fuckin MURDER,
and id to Feck about with the "PLAYBACK ENGINE" AND "BUFFER SIZE"
AND ALL THAT SHITE
I'm talking about using this SIR reverb plug-in as a send. The reverb is there, but it's very late. It almost sounds like a slap-back delay with reverb.
What about lead? Nothing says "I am the 200ft guitar god" like a huge amount of cathedral reverb on a lead guitar!
Sorry can't fix it unless its a matter of buffer size in PT (even then I'd have to connect up and figure it out)
Yeah, I saw a "latency fix" plug-in, but the link was dead. I'm gonna just put it on the back burner for now. I've been doing just fine without using this constipated reverb crap.
Monsterpop
New member
No man, it aint that kind of latency. Thanks though.
I'm talking about using this SIR reverb plug-in as a send. The reverb is there, but it's very late. It almost sounds like a slap-back delay with reverb.
aw furfuxake,,,theres more then one kind?
jeeezzzuzzz
gcapel
boom box recordings
This also depends on the guitar. My SG is the poster child for notes not settling quick. It works great to hammer an open drop d and give it time to settle (ala black sabbath). But if your notes are quick, for sure watch your heavy hand.
gcapel
boom box recordings
No offense Eck, but I am suprisingly disappointed in you. After hearing your comments on a thread where I posted a sample. You sounded like you knew what you were talking about. But man that guitar tone is horrid. You've gotta be playing through some type of distortion pedal or DI witht the gain on 9.
pipelineaudio
Well-known member
Good point, when you are talking about gear impulses
Still...Ill give you 100 years to try and set one of the pathetic VST DSP-verbs out there (besides maybe CSR) to sound like a good gear impulse
I think its safe to say, in a roundabout way, hat convo reverbs can beat VST DSP reverbs, even at "DSP"
pipelineaudio
Well-known member
The latency, which would only happen if your track is armed (unless your app is some ancient Piece Of crap with no plugin delay compensation) is caused by one of the schemes of doing the actual convolution itself.
There are a few different ways, each with advantages and disadvantages, with a few latency free ways, that sadly, as a result of our insane patent office, are not so readily available. Convolution is one plugin technology that has been nearly stopped dead in its promising tracks by politics.
There are a few different ways, each with advantages and disadvantages, with a few latency free ways, that sadly, as a result of our insane patent office, are not so readily available. Convolution is one plugin technology that has been nearly stopped dead in its promising tracks by politics.