Sigma Tel

I am writing to you as a last ditch effort. We have been using Dell laptops with the built in Sigma Tel sound card for several years. Specifically with an application developed by Voice IQ for doing audio recordings. This application requires us to use a Digigram VX Pocket PC sound card. We have discovered with the new release of Dell laptops, our application/hardware solution will no longer function correctly. I have discussed this problem with all parties involved and have hit a dead end.

We were using the Dell 800/600 series laptops which use a Sigma-Tel C-Major Audio driver. The newer Dell 830/630 series computers use a Sigma-Tel High Definition Audio CODEC and we find that our hardware will no longer work on these laptops. Everyone we have discussed this with says it's an issue with the new sound card built into the Dell's. I'm hoping that you might be able to shed some light on this issue.

Is there anything that I can do to make the newer HD audio interact like the older C-Major with our Digigram sound card? The problem we are seeing is everything will work fine for a short period of time and then two of the four recording channels (1 & 2) will peak out with white noise. This will last for anywhere from 30 seconds to several minutes and then go back to working correctly. I have updated the laptops to the latest BIOS, drivers etc. from Dell with no success. Talking to Voice IQ, Digigram, Dell support and our Dell sales rep. also failed to provide a solution.

Is there possible a registry change that could be made to the laptop configuration that might have some affect on this problem? Again, I know that this is an odd request, but we are at the end of our rope and really don't want to switch laptop manufactures if at all possible. Please let me know if I can provide any more detailed explanation that might help us find a resolution to this problem. Thanks in advance for your time,

Tommy