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More => Old Versions => JRiver Media Center 18 for Windows => Topic started by: barneypooch on July 28, 2013, 04:50:02 am

Title: WASAPI - SP/DIF (OPTICAL) - BAD CLIPPING DISTORTION.
Post by: barneypooch on July 28, 2013, 04:50:02 am

I'm getting the same problem as the chap in this post from January '13. Via optical to an external (high quality) DAC, I have terrible clipping-type distortion. Very loud, nasty "cracks" on peaks.

I can't find an answer on the forums. It goes away temporarily if I reinstall. Also, it doesn't happen via HDMI to my receiver.

Anybody got an idea? I'm on the latest build. IIRC it started about three builds ago (not sure if that's relevant, though).

Quote from: dmitchell on January 04, 2013, 12:51:34 pm

Has anyone else noticed distortion when using WASAPI? I have experienced it on two of my systems, on both Win 7 and Win 8, both regular WASAPI (push?) and event-mode.

If I change the output format from WASAPI to either DS or Kernel Streaming, and turn the volume on my soundcard down to around 85%, the distortion goes away.

As mentioned, this occurs on both my desktop system - using a USB headphone amp, as well as my 2 channel "reference" system at home (optical connection from soundcard into a high-end DAC).

Thanks.

Title: Re: WASAPI - SP/DIF (OPTICAL) - BAD CLIPPING DISTORTION.
Post by: JimH on July 28, 2013, 07:17:07 am

What build are you using?  The most recent one is at the top of the MC18 board.

Did you try the WASAPI setting called "Disable Event Style?

Title: Re: WASAPI - SP/DIF (OPTICAL) - BAD CLIPPING DISTORTION.
Post by: barneypooch on July 29, 2013, 05:49:31 am

Hi,

Thanks for the reply. As of yesterday the problem hasn't recurred. If or when it does I'll try disabling event style and report back.

Cheers.