On 1/29/07, <b class="gmail_sendername">Clay</b> <<a href="mailto:babyhuml@msn.com">babyhuml@msn.com</a>> wrote:<div><span class="gmail_quote"></span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Has anyone been able to get a Turtle Beach Riviera working on their system<br>so that a 5.1 stream will go out of the optical connection? (I have read<br>here and there that Cmedia has advertised that it works, but it really
<br>doesn't)<br>I can get 2 channels go do through, but no 5.1. I am grinding through the<br>email thread on this list about ac3 passthrough but no luck yet. The<br>following gives me 2 channels out of myth:<br><br>
Myth .20 config<br>> Audio output device: ALSA:iec958<br>> Passthrough output device:<br>> ALSA:iec958:CARD=0,AES0=0x6,AES1=0x82,AES2=0x0,AES3=0x2<br><br>The following gives me two channels off of a DVD:<br><br> mplayer -v -ao alsa:device=iec958 dvd://
<br><br>The following gives me no sound off of a DVD:<br><br> mplayer -v -ao alsa:device=iec958 -afm hwac3 dvd://<br><br><br>thanks<br><br>clay</blockquote><div><br><br>Yes, I have a turtle beach Riviera, and I can output Dolby digital
5.1 (and 6.1, and presumably 7.1, but I don't have any 7.1 sources). It'll also output DTS. It has been about two years since I set it up, and I don't have access to my machine at the moment. I do know that I had to open up alsamixer and toggle each of the inputs until I found the one that controlled the dolby digital. You might want to try that. By default it was turned off.
<br><br>Make sure you use the following mplayer flags to get the dolby digital/DTS:<br>-ac hwdts,hwac3 (that'll pick up either dts or dolby digital)<br><br>You may also need to specify the correct audio track. For dolby digital it's typically 128 (unless you speak french), for dts it's usually in the 130's somewhere... For example:
<br>-aid 128<br><br>-darren<br></div><br></div><br>