Apache Labs Community Forum

All worked ok before-- never really did anything that I know of. Surely I am missing something somewhere!

vac2 device?

Richie.

That's normal, are you using ASIO drivers in "exclusive mode"?

Behringer UMC202HD

ea3aqr wrote:That's normal, are you using ASIO drivers in "exclusive mode"?

I am not sure!

Thanks
Larry

ea3aqr wrote:That's normal, are you using ASIO drivers in "exclusive mode"?

good spot Jordi. This is something I did not realised. I have vac2 on MME driver using same device.

R.

Yes, this always been a limitation of PowerSDR and then Thetis. The portaudio implementation in Thetis only allows a single instance of ASIO, so you can use it on VAC1 or VAC2 but not both at the same time. Put that on the "want" list

However, I have done some experiments here in the past. You can use ASIO on VAC1 and WDM (faster than MME) on VAC2 and mix them both in Voicemeeter to get a composite output of both RX1 and RX2. If you then assign RX1 and RX2 to the same frequency, you can appreciate just a tiny bit of reverb, i.e. just a tiny bit of delay from VAC2/WDM compared to VAC1/ASIO. This is also a great way to appreciate how much delay NR, NB and EQ can cause on the received signal. If you hear a distinct echo, be sure that, for example, NR2 is not turned on on RX1 and not on RX2, etc.

Which brings up another "want", which is an option to bring out both RX1 and RX2 audio mixed together on VAC1.

Not just a PowerSDR or Thetis limitation at least with Sound Blaster ASIO drivers...

When running Thetis and ASIO drivers I can't open, for example, a YouTube video at the same time, I always get an error because Windows is unable to play audio.

After closing Thetis YouTube video plays fine.

Thanks for the replies all!

Boy, that's a real bummer! So essentially if anyone is using an audio interface, they are limited to one (1) receiver only?
I will give Scott’s way a go and see what we get.
73

w-u-2-o wrote:Yes, this always been a limitation of PowerSDR and then Thetis. The portaudio implementation in Thetis only allows a single instance of ASIO, so you can use it on VAC1 or VAC2 but not both at the same time. Put that on the "want" list

However, I have done some experiments here in the past. You can use ASIO on VAC1 and WDM (faster than MME) on VAC2 and mix them both in Voicemeeter to get a composite output of both RX1 and RX2. If you then assign RX1 and RX2 to the same frequency, you can appreciate just a tiny bit of reverb, i.e. just a tiny bit of delay from VAC2/WDM compared to VAC1/ASIO. This is also a great way to appreciate how much delay NR, NB and EQ can cause on the received signal. If you hear a distinct echo, be sure that, for example, NR2 is not turned on on RX1 and not on RX2, etc.

Which brings up another "want", which is an option to bring out both RX1 and RX2 audio mixed together on VAC1.

Scott,

Does Voicemeeter allow you to change its ASIO sample format from doubles to integers? Or is it stuck on doubles? If it lets you change to integers, I would like you to try my addition that takes the hardware audio CODEC streams directly to ASIO, thus bypassing PortAudio altogether.

73, Bryan W4WMT

W4WMT wrote:

w-u-2-o wrote:Scott,

Does Voicemeeter allow you to change its ASIO sample format from doubles to integers? Or is it stuck on doubles? If it lets you change to integers, I would like you to try my addition that takes the hardware audio CODEC streams directly to ASIO, thus bypassing PortAudio altogether.

73, Bryan W4WMT

As far as I know it does. It has a setting called "Virtual ASIO Type" which allows two options, Float32LSB or Int32LSB. I normally run float, but it does work with int, and I can switch to that.

w-u-2-o wrote:

W4WMT wrote:

w-u-2-o wrote:Scott,

Does Voicemeeter allow you to change its ASIO sample format from doubles to integers? Or is it stuck on doubles? If it lets you change to integers, I would like you to try my addition that takes the hardware audio CODEC streams directly to ASIO, thus bypassing PortAudio altogether.

73, Bryan W4WMT

As far as I know it does. It has a setting called "Virtual ASIO Type" which allows two options, Float32LSB or Int32LSB. I normally run float, but it does work with int, and I can switch to that.

Okay, good! My direct ASIO thing expects Int32LSB, since that is what the hardware CODEC runs.

I also run Int32LSB because (according to my understanding) integer math is faster than floating point math. And a 32 bit integer still offers way more dynamic range than Thetis is capable of using.

Mark