MM4 and Bit Perfect Sound

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bailso
Posts: 52
Joined: Sat Feb 02, 2008 12:24 am
Location: Sydney, Australia
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MM4 and Bit Perfect Sound

Post by bailso »

Hi All,

I use a PC runing W7 64 bit and my interface to my sound system is through an M2Tech Hiface USB. Under MM3 I was successfully achieving bit perfect outpput through either the ASIO or the Kernel Streaming output plugins. I have now been using MM4 for about 3 weeks and with one exception I am very happy with the result.

The one exception is that with either of the output plugins mentioned above, the music can , for no apparent reason start "stuttering". If I switch to WASAPI the problem disappears.

Any thoughts on how to overcome the problem because on my system, the sound out of WASAPI while being acceptable is inferior to the other 2 plugins.

Thanks and regards,
Otello
Posts: 93
Joined: Tue Nov 24, 2009 11:06 am
Location: Roma - Italy
Contact:

Re: MM4 and Bit Perfect Sound

Post by Otello »

Bailso, may I ask you what Kernel Streaming driver did you use with MM3?
Just curious, I remember (when I used Win XP) I tried with the KS driver at http://www.stevemonks.com/ksplugin/ with a dozen of PCs and it didn't work...
(With MM3 and Hiface I had to use the ASIO plugin with the orrible ASIO4ALL driver.)
On the other side, for me ASIO works with MM4, too, but I tried with Win 7 32 bit only; anyway I use Wasapi with excellent results.

About your quality problem with Wasapi, in my experience, if the player is correctly set for bit-perfect output, there is no difference between Asio, Wasapi (with Vista/Win 7), KS (with XP) using either MM3, MM4, Jriver and Foobar...
Did you enable exclusive mode and set "Automatic choise of format (per track)"?
bailso
Posts: 52
Joined: Sat Feb 02, 2008 12:24 am
Location: Sydney, Australia
Contact:

Re: MM4 and Bit Perfect Sound

Post by bailso »

Thanks Otello for your thorough analysis. Firstly, yes I did use the Steve Monks KS and it worked in both XP and W7 over a couple of computers. It is interesting how installation dependent some of these software add-ons are.

I think I have W7 set for exclusive mode. The one option I was unaware of was the possibility for individual sampling rates for each track. Where do I find this? In MM4 or W7?

Thanks again.
Otello
Posts: 93
Joined: Tue Nov 24, 2009 11:06 am
Location: Roma - Italy
Contact:

Re: MM4 and Bit Perfect Sound

Post by Otello »

You may chech the setting for automatic choice of format in MM Tools/Options/Output Plugin; select the Wasapi driver, then click on Configure:

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You may also check your setting in Control Panel/Audio: select the HiFace SPDIF interface, click on Proprties, then the tab "supported Format".
Be sure all the sample rates supported by your DAC are checked:
(Sorry, my system speaks italian...)

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While you are there, click on the tab "Advanced" and check exclusive mode is selected:

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P.S. Of course, to get bit perfect output you cannot play file with unsupported sample rate, use the player volume, equalizers, DSPs and Reply-Gain (In MM: Tools/Options/ Volume Leveling and uncheck "Level Palyback volume to".

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