S/PDIF output problem

ogrodnik · Post by **ogrodnik** » Thu Oct 30, 2008 2:50 pm

Hello,

While playing through S/PDIF I can hear some rythmic "knocks" over the high notes. Does anyone have any conception what might be the problem? I put the sample of the sound here I guess there is something between M3 and D3200 but I got no idea what... Both machines are set for 48kHz/24bit. By the way - is there a possibility to set M3 for 44.1/16?

NkM3 · Post by **NkM3** » Sat Nov 01, 2008 3:18 pm

i had the same problème and it was a option on the card to change rme fireface 400 clock mode to change for autosync i think you need to check on your sound card option and it will work

ogrodnik · Post by **ogrodnik** » Sun Nov 02, 2008 10:14 am

I would love to take advantage of your suggestion if only D3200 had a sound card...
I guess it's something with D3200 rather than M3 itself. If it was M3 I would find something here at the forum. Thank you anyway

Coronado · Post by **Coronado** » Tue Nov 04, 2008 8:01 am

The M3 can not be set to 44.1 khz, The source of your noise could very well be the following. For syncing audio in this case, there is a master and a slave. M3 should be the master. So you have to set up the audio sync clock in theD3200 to external and the M3 to internal. The D3200 will automatically detect M3's 48 khz/24 bit and my guess is, the noise disappears.

Good luck!

larf2k · Post by **larf2k** » Wed Nov 25, 2009 8:07 pm

Coronado wrote:there is a master and a slave. M3 should be the master. So you have to set up the audio sync clock in theD3200 to external and the M3 to internal. The D3200 will automatically detect M3's 48 khz/24 bit and my guess is, the noise disappears.

Good luck!

I'm dealing with sonar via a m-audio firewire 410, and I'm wondering if I can make the m-audio device the master. Sonar seems to like that much better. Everytime I try and sync I get a clock error from the m3...even though the m-audio is set to 48k/24.......

Rob Sherratt · Post by **Rob Sherratt** » Wed Nov 25, 2009 11:34 pm

You have to use the M3 as the clock master. It doesn't work reliably the other way round due to jitter in timing on the PC with M-Audio's drivers and the PC architecture limitations. With the M3 configured as master timing clock you need to set the M-Audio driver to accept word clock timing via the S/PDIF link. Then at the computer you may get occasional dropped samples, but you can just copy a previous sample to fill in any gaps. Or you can increase the ASIO buffer size (and latency) to reduce dropped samples.

Or you can record the M3 using conventional analog outputs, then it will eliminate any need for locking the sample rate clocks, and the computer can do whatever it wants independently.

This is the way I am going - using a Yamaha N8 digital mixing desk in future.

Best regards,
Rob