ReaVerb: on a 64-bit I.R., does it process at 64 bits?

[TryingToMakeMusic]

64-bit source-signal and 64-bit I.R loaded into reverb; does ReaVerb maintain 64-bits throughout the process?

[Aeolian]

Reverb processes in 64bit float, so any file loaded will be converted to 64bit float for processing.

[TryingToMakeMusic]

Originally Posted by Aeolian

Reverb processes in 64bit float, so any file loaded will be converted to 64bit float for processing.

Thanks. I get that Reaper is generally processing at 64 bits, but I was wondering if ReaVerb might be an exception, since it's a plugin rather than an integral part of the summing-engine, and since it might be built on 3rd-party libraries that might not be 64-bit.

If I get curious enough, I'll make a JSFX meter that measures down to 64 bits, and test ReaVerb on signals that are identical for the most significant 32 buts, but different in less-significant bits. If I get motivated to do all that.

[drichard]

No disrespect intended, but why do you care? In most cases, in the end result the reverb will be a nearly inaudible part of a 16-bit MP3. There are precious few humans (if any) that could detect the difference between 32-bit reverb output and 64-bit under the most controlled conditions, but in the context of a mix/master/mp3 it is all but impossible. IIRC some of the very popular earlier Lexicon reverbs were 12-bit.

Originally Posted by TryingToMakeMusic

64-bit source-signal and 64-bit I.R loaded into reverb; does ReaVerb maintain 64-bits throughout the process?

[karbomusic]

[TryingToMakeMusic]

Thanks, karbo.

[TryingToMakeMusic]

Originally Posted by drichard

No disrespect intended, but why do you care? In most cases, in the end result the reverb will be a nearly inaudible part of a 16-bit MP3. There are precious few humans (if any) that could detect the difference between 32-bit reverb output and 64-bit under the most controlled conditions, but in the context of a mix/master/mp3 it is all but impossible. IIRC some of the very popular earlier Lexicon reverbs were 12-bit.

800 instances summed -> 29 dB increase in noise-floor. That is still, maybe, okay; but I'm not ready to lock myself into that, so looking at my options.

[Tale]

Originally Posted by TryingToMakeMusic

64-bit source-signal and 64-bit I.R loaded into reverb; does ReaVerb maintain 64-bits throughout the process?

Well, I don't really know, but I would guess that ReaVerb converts the IR in 32-bit floating point format, but does do all its processing in 64-bit floating point.

[TryingToMakeMusic]

Originally Posted by Tale

Well, I don't really know, but I would guess that ReaVerb converts the IR in 32-bit floating point format, but does do all its processing in 64-bit floating point.

Thanks, Tale.

Why do you guess it converts the IR to 32-bit FP? Is that what Reaper does when you import a 64-bit WAV onto a track?

[Tale]

Originally Posted by TryingToMakeMusic

Why do you guess it converts the IR to 32-bit FP?

Because this is the default storage setting for WDL's convolution engine, and I'm guessing that a) ReaVerb uses this engine, and b) it uses the default settings.

Originally Posted by TryingToMakeMusic

Is that what Reaper does when you import a 64-bit WAV onto a track?

No, AFAIK REAPER always converts to 64-bit FP internally (although there is a setting for track mixing bit depth).

[TryingToMakeMusic]

Thanks again.

[Xenakios]

Originally Posted by TryingToMakeMusic

800 instances summed

Explains your user name here on the forum, I guess...

[TryingToMakeMusic]

Originally Posted by Xenakios

Explains your user name here on the forum, I guess...

lets hear your music then?

[mschnell]

Originally Posted by TryingToMakeMusic

since it's a plugin rather than an integral part of the summing-engine,

What is the Audio format specification of VST (2) ? Does it even allow for 64 Bit ?

-Michael

[TryingToMakeMusic]

Originally Posted by mschnell

What is the Audio format specification of VST (2) ? Does it even allow for 64 Bit ?

-Michael

Thanks. Apparently the VST2 spec does not.

[Tale]

Originally Posted by TryingToMakeMusic

Thanks. Apparently the VST2 spec does not.

Yes it does, see:
http://www.dith.it/listing/vst_stuff...23595e3da4fe33

EDIT: How else would you measure bit depth using Bitter, a VST2 plug-in.

[TryingToMakeMusic]

Originally Posted by Tale

EDIT: How else would you measure bit depth using Bitter, a VST2 plug-in.

Sure enough.

Originally Posted by Tale

Yes it does, see:
http://www.dith.it/listing/vst_stuff...23595e3da4fe33

Thanks for setting me straight. In that case, I don't know what Steinberg means by this, on their "VST3-Technology" page:

64-bit processing

VST3 plug-ins are generally able to process audio data in 64-bit.

https://www.steinberg.net/en/company...gies/vst3.html

Why would they boast about 64 bits in VST3, when it's nothing new? (The question is rhetorical; Steinberg does plenty of things that don't make sense.)