ASIO2-Flt Source 64 module prob with Cubase VST5

[hesnotthemessiah]

I had been using "ASIO2 24 Bit Source" module for quite some time with the "ASIO2 Dest" module and had no problems. I used the ASIO2 Dest module to route the mix into a TC Powercore Assimilator and other various plugins running within Cubase VST5.2 PB1 Beta 7(latest version). I am using Scope v4.5 (never in XT mode).

Yesterday I did a search on PlanetZ to find out about what is the best ASIO modules to use which led me to trying the "ASIO2-Flt Source 64" module.

I tried using the "ASIO2-Flt Source 64" module but all I get is a loud white noise like hiss when routing the audio into either the "ASIO2 Dest" or "ASIO2 Dest 64" modules. Go back to using the "ASIO2 24 Bit Source" module and everything works fine again. The "ASIO2-Flt Source 64" module works fine routing the audio from Cubase into the Scope environment but the problem seems to be routing the audio, using the ASIO Dest modules, back into Cubase.

The Cubase VST5 manual states "Cubase VST processes audio internally in 32 bit float resolution". The Scope manual says to use the ASIO1-Flt source/dest 64 modules for 32 bit recording with Cubase VST. It also says (when describing the ASIO2 modules) that the single ASIO (as in ASIO2) Dest module supports all sample resolutions and adapts itself automatically to the resolution of the source module connected to it. So I am not too sure why the "ASIO2-Flt Source 64" will not work in my setup.

Has anyone used Scope with Cubase VST5 and managed to route audio back into Cubase VST5 when using the "ASIO2-Flt Source 64" module?

Thanks for any help.

[garyb]

even if vst5 supports 32bit float drivers, i doubt it supports the 64i/o version. just use the 24bit. you won't notice a significant difference.

[hesnotthemessiah]

Hi Gary. Yep It looks like I will stick with the ASIO24 bit module. The ASIO2-Flt Source 64 module seems to work fine with Cubase VST5 as far as I have tried it - all 32 (stereo) buses appear in Cubase - and I have been using it for a day with 13 buses used and no problems, until using the ASIO2 Dest module. The thought of those extra 16 (stereo) Buses from Cubase into Scope seemed like a nice idea (along with the "better" audio quality) but, in reality, am I ever going to really need those extra buses or notice the increased audio quality/headroom and could my PCI bandwidth cope with it anyway? - especially as I run UAD and Powercore cards on the same PC aswell.

One thing I noticed, after typing my previous post, is that the noise made when listening to the audio sent via the ASIO2 Dest module (when using the ASIO2-Flt Source 64 module) is not actually like white noise - the noise is more like distortion of the audio signal, as if there is too much gain (which there is not). This distortion gets harsher the louder the audio signal.

I am still learning all this stuff about bit rates and PCI bandwidth, with this forum being my main source for info. The trouble is, in my endless search for sonic/working environment perfection, I am not actually getting any music done!! But I bet you have heard that before.

[hesnotthemessiah]

Just about to go to bed and I thought I would just do the quick task of reverting my old Scope Default setup to how I had it previously with the ASIO2 24 Bit Source Module. I deleted the "ASIO2-Flt Source 64" module and replaced it with the "ASIO 24 bit source" module. The "ASIO2 Dest" module reduced it's outputs to 2 at the same time. When I try to increase the number of ASIO2 destination sources using the "Open ASIO settings" on the "ASIO 24 bit source" module I get the BSOD. I tried this a number of times with Cubase running and not running and by trying to increase the number of ASIO2 destination sources by a different amount each time but everytime I make an increase to the number of ASIO2 destination sources I immediately get the BSOD.

So I loaded a previous Default Scope default project which used the "ASIO2 24 Bit Source" Module and had 16 stereo "ASIO2 Dest" outputs. I decreased the "ASIO2 Dest" outputs with no problem but as soon as I tried to increase it I got the BSOD again.

Why can I now not increase my "ASIO2 Dest" outputs? I have obvoiusly done this in the past. Am I wasting a lot of resources by having the "ASIO2 Dest" module set to 16 stereo outs when I would probably on use 4 or 5 of the "ASIO2 Dest" stereo outs at the most? If I do decrease the number of stereo outs to 5 in a project then I will not be able to increase this easily later on in the project.

My head hurts. I must sleep...........

[garyb]

hmmm, very strange....

maybe it'll work right after a little rest....