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MC24 Settings required to output SACD multchannel ISO to AV receiver via PCM

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Awesome Donkey:
If you're using HDMI from a Mac, disable DSD bitstreaming because you can't bitstream DSD from a Mac or PC over HDMI.

sensei_russ:
OK, so some progress...

I can get audio out of my amp using both sets of the following settings (please see below), one with 'Bitstreaming On' and one with 'Bitstreaming Off'. (I've no idea what is technically being output with 'Bitstreaming On' but I am getting audio out).

However... for both sets of settings there is a problem with the surround settings as I seem to be getting the same channels across all speakers, as opposed to the speaker specific output for centre channel, or rears etc etc. (Previously this worked properly using the bitstream method - I've no idea what has now changed). My amp says it's receiving a multichannel 7.1 input and I am testing using Multichannel SACD tracks.

1/
Bitstreaming/Yes/HDMI
Audio Device/HDMI [Core Audio]
Settings/DSP & Audio Format/None

2/
Bitstreaming/None
Audio Device/HDMI [Core Audio]
Settings/DSP & Audio Format:
Output Format: Enabled and Processing 96khz 64bit 8ch
Output Encoding: None
Channels: 7.1
Sample Rate - All are set to output 96khz

Note: Using this option, my Mac Mini's 'Audio Device' settings has reverted to the Built-in output, the HDMI output can no longer be selected.


P.s. Many thanks for the heads-up on setting output to 96khz Brian. I'd tried it before on the 768khz setting and it didn't work. But when I applied it to 'All Sample Rates' it worked :)

blgentry:

--- Quote from: sensei_russ on September 28, 2018, 11:41:48 am ---However... for both sets of settings there is a problem with the surround settings as I seem to be getting the same channels across all speakers, as opposed to the speaker specific output for centre channel, or rears etc etc.
--- End quote ---

Check your setting for Output Format > Channels > Mixing .  Do you have a 7.1 system?  Meaning, do you actually have 7 speakers and a subwoofer connected to your system?  If so, that's the correct setting.  If not, change it to match your actual number of speakers. 

Take a look at the check boxes also for stereo sources, etc. 

Finally, you might try turning mixing off altogether and see what happens.  You can always turn it back on.


--- Quote ---Note: Using this option, my Mac Mini's 'Audio Device' settings has reverted to the Built-in output, the HDMI output can no longer be selected.
--- End quote ---

You mean in System Preferences > Sounds correct?  I would guess that means MC is opening the HDMI device with exclusive access... but not 100% sure on that.

I continue to wish you success with this setup! 

Brian.

sensei_russ:

After a lot of experimenting it seems to be working (fingers crossed!).

I tried switching some options on, some off and now it just seems to 'work'. I'm not sure why... However my settings are as follows in case it helps anyone else:

Audio Device/HDMI Core Audio

Output Format:
Encoding/None
Channels/5.1
Mixing/No Upmixing or Downmixing
Sample rate/No change except for 352,800 and 384,000 both set to output 176,400.

Bistreaming/None

My Macs Built-in Output is selected on my Mac mini.



Many thanks for everyones help especially bigentry for his feedback which got me over the line.

Cheers

blgentry:
That's great news!  Glad to hear you've got it working.

Take care,

Brian.

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