FM8 64-bit sounds different than 32-bit

[nek4life]

Not sure if this is a bug on Ableton's side or Native Instrument's side, but when I run FM8 using the following patch playing C1 in 32-bit vs 64-bit sounds complete different. If I transpose the note to C2 in 64-bit mode it sounds closer but I don't think it's quite the same.

https://dl.dropbox.com/u/11204/Drone%20Bass%20Stab.nfm8

I'd love to start using the 64-bit version on a daily basis, but this is kind of a deal breaker for me right now.

Thanks!

Equipment used:

MacPro 3.2ghz, OS X 10.7.4, Ableton 8.4b3, FM8 1.2.0 (R1016)

[taoyoyo]

Are you loading the FM8 patch fresh onto a 64bit Live session or are you opening a saved 32 bit session into 64bit?

(I ask because there have been some issues with some parameters not being kept/remembered with FM8 patches when reopening saved projects in some DAWs).

[nek4life]

Are you loading the FM8 patch fresh onto a 64bit Live session or are you opening a saved 32 bit session into 64bit?

Just tried opening an fresh project in the Beta based on your suggestion and I get the same result. Definitely a bizarre behavior.

[taoyoyo]

Ah well, definitely worth asking.

I tried your patch and can confirm the same behavior... FM8 plays an octave lower in 64bit.

Same OSX/version specs as you, except using a MBP.

[doom_Oo7]

Did anyone test this in another 32 / 64 capable daw like S1 ?

[nek4life]

Did anyone test this in another 32 / 64 capable daw like S1 ?

I don't have another DAW, but that would tell us if it's Ableton or FM8

[taoyoyo]

I can test in S1. Will post the results later.

[[mal]]

Hi,

We reproduced this problem on both windows and osx. We will investigate if we can do anything on the Live side, but I doubt it.

Best,
Mads

[h4nc0]

ouch.

[taoyoyo]

Managed to reproduce this behavior in Studio One.

Looks like an NI/FM8 issue.

[doom_Oo7]

I just don't understand how it is possible when porting from 32 to 64 bit to loose an octave xD
I mean, it's a matter of changing ints to long longs and allocating bigger page sizes, aint'it ?

[TabSel]

...aint'it ?

no

[doom_Oo7]

What then ?
EDIT : quote from MSDN :

Porting your code to compile for both 32- and 64-bit Microsoft Windows is straightforward. You need only follow a few simple rules about casting pointers, and use the new data types in your code. The rules for pointer manipulation are as follows.

[marcoskohler]

I'd be interested to know as well.

[Angstrom]

edited because ... internet