Topic: DTS+AC3 passthrough not working or am I too dumb?

I want to pass DTS+AC3 signals through the RME.

Source connected via USB - Target connected via optical or coax SPDIF:
In USB Mode I set sample rate to 48 kHz and the RME ADI 2 pro FS as standard device but any player I tried refuses to pass DTS or AC3 to the RME. So I guess Windows does not recognise the RME as a DTS or AC-3 capable device. It "only" routed a stereo signal from USB to SPDIF out. In Digi through Mode nothing arrives (optical out set to SPDIF)

Source connected via optical SPDIF - Target connected via optical or coax SPDIF
Then I tried feeding the RME with a DTS signal via SPDIF in and routing in Digi through mode to SPDIF out (48kHz set tried SPDIF clock or internal clock). The RME unit recognised that there was a "non Audio" signal present on the SPDIF in but didn´t route anything to SPDIF out.

Everything stereo works flawlessly.

Am I missing something? Many thanks

2

Re: DTS+AC3 passthrough not working or am I too dumb?

Source connected via USB - Target connected via optical or coax SPDIF, USB Mode
Did you change the ADI-2 Pro to Multichannel mode and selected the digital SPDIF output? Looks like you try to convince Windows to send a digital signal out of a device that is called 'Analog 1/2'.

Source connected via optical SPDIF - Target connected via optical or coax SPDIF
Feeding a signal with Non-audio indication will mute the signal already at the receiver, so even in Digital Through Mode there is no audio at the digital output. Remember that the unit is always a DAC as well. You could listen to this signal at the analog outputs, which won't be a pleasant experience.

Regards
Matthias Carstens
RME

3 (edited by ozorfis 2021-09-15 07:38:15)

Re: DTS+AC3 passthrough not working or am I too dumb?

You nailed it again MC. I was indeed in Stereo Mode. Now I have the SPDIF and AES channels available - seems like a major leap forward. Thank you very much!

However now Windows keeps telling me both devices (AES and SPDIF) were in use by some program, when I want to test DTS/DD capability in the win sound manager (hence passthrough also does not work yet). Closing all programs, turning on/off, uninstalling, restarting hasn´t helped so far with that. But I will test some more from here.

Edit: Just tested with my Win10 laptop and got the same result: DD+DTS test on SPDIF and AES results in "Audio device is in use..." 48kHz stereo works on both pcs on both channels......

4

Re: DTS+AC3 passthrough not working or am I too dumb?

Same here. We have to check our driver...

Regards
Matthias Carstens
RME

5

Re: DTS+AC3 passthrough not working or am I too dumb?

AC-3 and DTS digital playback now works in driver 0.9736:

https://www.rme-audio.de/downloads/driv … _09736.zip

Regards
Matthias Carstens
RME

6 (edited by ozorfis 2021-09-21 06:38:13)

Re: DTS+AC3 passthrough not working or am I too dumb?

I am impressed with the speed and dedication. I can confirm it works and sounds flawlessly with the updated driver.

Thank you very much!

Edit: funny how the title was true in both ways wink