Bug? Aliasing bug

Poparad

Poparad

Power User
I've been having this problem intermittently since I got my FM3 back on FW 3x. Currently on 6.0 and every now and then when I boot it up I get a garbled, aliased sound (see video). Rebooting it fixes it and it only happens once every 30 or 40 boots. Interestingly, the aliasing disappears around a high F# on the 14th fret of the high E string. If I bend it a little sharp to 750Hz, it completely disappears.

 
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I think I've heard this sound before.
In my case my fm3 was connected via spdif to my audio interface and then monitoring from the interface back into the input 2 of the fm3.
I thought it was a bad cable but I think restarting the Fm3 it was fine.
 
unix-guy said:
Weird!

Just a wild guess, are you using digital I/O such as SPDIF? Maybe a clock issue?
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Yeah....the description from both people sounds like it could be the word clock losing sync (or just not syncing externally).

The video does not sound at all like aliasing.

I definitely remember reading somewhere that the FM3 couldn't/wouldn't accept an external word clock (is it even possible with only digital outputs?). Since I don't want to use it as my clock master, that means I just don't use the digital outputs except occasionally for my Clarity M.
 
Nope, no spdif. The only thing I had hooked up in the video were the analog audio outs and some MIDI (Specular Tempus, MC6, Morninstar MIDI splitter and Disaster Area loop switcher). I have two FM3s and only this one exhibits this issue. I don't recall the other one ever booting to garbled audio.
 
Poparad said:
Nope, no spdif. The only thing I had hooked up in the video were the analog audio outs and some MIDI (Specular Tempus, MC6, Morninstar MIDI splitter and Disaster Area loop switcher). I have two FM3s and only this one exhibits this issue. I don't recall the other one ever booting to garbled audio.
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That is weird.

At this point, I hope you (and the forum/admins) figure it out just because I'm curious.
 
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