Clicks and Pops using ADVC-100

[Tolwyn]

I'm getting clicks and pops in the audio even when not capturing using a Canopus ADVC-100 capture device.

It seems to only be the Right Channel; regardless of the source (plugging in a CD player for instance yields the same results—even when it's just idle). I can't tell if it's Scenalyzer or the device.

Any ideas?

[Tolwyn]

Ok. It's not Scenalyzer. I just tested using Sony Vegas' capture tool, and I am getting the occasional pop every 30 seconds or so. It's not exactly 30 seconds, but you know... on average by my estimation.

It's just a small bit of white noise, maybe a frame long.

[Tolwyn]

bump.

[spectroelectro]

The only two possibilities are (1) a blown capacitor on the right audio channel analog output or input; and (2) some hardware conflict with another device in your system, probably some IRQ issue or possibly IRQ bus steering issues.

To diagnose, the ruthless application of logic is in order. Yank hardware out of your computer one piece at a time until you get an absolute minimum. I.e., if you have a USB printer hooked up to your computer, unhook it. Then pull out a PCI modem if you have one installed. Then pull out your other peripherals one at a time. If the clicks 'n pops go away, its a hardware conflict and you either need to move your PCI card (whatever) out of slot 1 to a different PCI slot (the usual solution for PCI bus IRQ steering problems) or you need a different printer/modem etc.

If you yank out everything but your graphics card and hard drive and the problem persists, then it's probably a hardware defect inside the ADVC-100. In that case, if your ADVC-100's still under warranty, return it for warranty repair.

[Tolwyn]

I only have the IEEE Hub and a video card (and HDs, of course).

It's not just the audio, as it turns out. There are little "blips" in the video, too. You can see a few green squares and then the audio "hiccup".

Even sitting idle, if it's receiving "signal" (audio/video), it occurs (meaning, I'm not writing to the HD, just monitoring the inputs).

[edDV]

Try it on a different computer. If it still does it call Canopus.

[Richard_G]

I notice from your computer details that you are using a motherboard based on the Nvidia chipset. There are known problems with interference being generated by the hard disc controller chipset on these boards. This may be connected with your problem.

See https://www.videohelp.com/forum/viewtopic.php?t=200093

and

https://www.videohelp.com/forum/viewtopic.php?t=189059

[atillman]

It could also be something outside of the computer, like a refridgerater or air-conditioning unit. I'd try moving the entire setup to a different area on a different household circuit and test again.

[Tolwyn]

There's no other interference involved; I also have a Digital and Analogue recording studio in the same room that has never exhibited any issues regarding interference.

I'm betting it relates to overclocked bus; or perhaps the IDE drivers. I think I'm using windows drivers... I'll double check.