Hi, I have a pretty frustrating problem with my Alsa setup. Right now I'm just looking for guidance about what's messed up and how I might get it fixed. I'm not sure if it's a driver issue, an Alsa issue, or a hardware issue. I have not yet found anyone else that has this exact set of problems, but no one uses the same hardware either.
At the outset, let me say that the machine is dual boot and the problem does not occur in Windows. MY SYSTEM - HDSP 9652, Gentoo-2.4.20-r7, Alsa 0.9.6 patched with Thomas's HDSP patches from 8/27. ADAT1 out goes to an Alesis AI-3 D/A. PROBLEM STATEMENT- When playing mp3's using mpg123 I get a horrible, loud and ugly high pitched static noise just before the audio starts to play. It lasts about 1 second. I have also noticed that using hdspconf to change the sample clock rate to 48K from 44.1K causes the same horrible noise, but usually for a shorter period of time. One thing I've noticed by watching hdspconf is that when I start playing the mp3 that hdspconf first says it loses sync, then goes to a lock condition, and then goes back to a sync condition when the noise stops. Also the sample frequency changes first to 32KHz and then back to 44.1K and then becomes synced again. This happens while the noise is occurring. My speakers and headphones are driven from an AI-3 converter hooked to to the ADAT1 port of the HDSP 9652. The AI-3 is ADAT, based but runs at 48K unless it receives a input clock of a different frequency. The 9652 is set up to generate 44.1K as the master device, and the AI-3 seems to track it except when this noise occurs. One last thing. If I set my HDSP 9652 to 48KHz and attempt to play and mp3, then the noise occurs, the frequency drops first to 32K And then goes to 44.1K. The mp3 plays, but the card is left at 44.1K And never goes back to 48K. Does this sound correct? I've tried all sorts of different clocking schemes but none of them seem to solve this problem. I'm hoping that someone in the Alsa-Dev group will know something about this and how I might fix it. If you want more technical data or have some test you think I should try please let me know. Thanks in advance, Mark ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
