Static continues w/ Omni I/O, Delta-66

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mark4man

mark4man

MoonMix Studios
I have the same really bad static noise when I record tracks in Cakewalk Pro Audio 9 as I had when I posted last month. It happens both when I use my MIDI Module & when I record with a mike. I am using an M-Audio Omni I/O with a Delta-66 card; & have all my settings in Cakewalk "Direct Show Audio" set per M-Audio's recommendations (in their Cakewalk "how to guide"), except for "Default Settings for New Projects", which is set to a bit depth of 16. I also use an EbTech Line Level Shifter (which is an impedance matching transformer that converts -10db to +4db) in line between my MIDI Module (Roland JV-1010) & the Mic/Line inputs on the Omni I/O (this eliminated all the preamp buzz I had previously.) I have bypassed this device & still get the static. I have my "Variable Signal Levels" set to +4db in the Delta Control Panel. The static noise occurs along with recorded signal only, almost like a type of distortion. You hear it as the waveform plays, but it is not present during quiet passages. Any ideas? Thanks.

mark4man
Dell 700
Win98SE
512 RAM
 
Are you coming out of a mixer?
Is your sound card seated all the way in the PCI slot?
Do you have another sound card i.e. Soundblaster, that is actually doing the recording?

Do you hear these sounds when the computer is turned off?
Do you hear voices?

Sorry, just chasing down all possible angles.
 
1) Do you have the latest drivers for the software?
2) You haven't indicated whether or not the incoming audio is being transformed, i.e.; are you sure that the distortion you're hearing isn't just occuring during playback. Have you isolated this?
3) Have you tried switching cables?
4) Have you tried recording to another device to tell whether the distortion is actually happening between the computer and the Delta I/O?
5) Is the Delta 66 card next to a fan? You may try moving it to the bottom of the PCI slots or temporarily unplugging the fans to see if it makes a difference.
6) Last, is the Delta sharing IRQs with any other device? If so, you may want to try isolating the card's IRQ, especially if its the video card. You can do this either in the OS or the BIOS or both.

I believe I've made comments on upgrading in another post if you so choose to review it. There are advantages, especially for Cakewalk users that can't use ASIO drivers, the WDM drivers are really good in Win2K and XP although I honestly can't speak for XP. I only know that drivers are still scarce and the OS is still in its infancy.

Good luck and I'll subscribe to the thread in case you need an ear.
 
How do the waveforms apppear? Are they squared off? That would indicate excessive recording level.

Is your computer using the M Audio card or the on board audio? I don't know how Win 98 appears, but if it's anything like 95, check to see which device is asigned by going to-
control panel/multimedia/audio tab- preferred devices
 
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Answers

I am assuming it is occurring during recording & becoming embedded in the track. I can't hear it as I monitor the recorded track, but it only happens on about half the tracks; & the playback always sounds the same for those tracks. Other than that, I don't have the expertise to determine whether or not the source is record or playback. The waveform appears normal. The card has been moved to a PCI Slot where it only shares an IRQ assignment (3) with my modem enumerator. I am trying to ascertain if I can simply disable that device since I now have a broadband connection, but lard butt M-Audio tech support hasn't responded; & I am calling Dell tonight. I have the latest drivers installed. I don't think switching cables will help to isolate because it also happens when I record audio from my sound module. Thanks.

mark4man
 
You should disable and/or remove the modem card if you don't need it.

Also be very clear on the version of the drivers you have for your Delta card - I had a similar problem when I upgraded my Delta card drivers - It forced me to work backward through all the Delta drivers available until I landed on the set I'm using now.

I'm currently running version 4.1.22.27 on Win98se with no problems.

You can get to this info quickly by clicking the M-Audio DELTA CONTROL PANEL in Windows CONTROL PANEL. Once in the Delta Control Panel, click ABOUT.

I've been very happy with my Delta/Omni set up (aside from the driver issue) but now that everything is working again, its been very dependable.

Good luck!

Z
 
Z

1) That's another thing. I downloaded & installed the latest drivers, which was the 4.1.22.41. But the version # in the Delta Control Panel still reads 4.13.01.0041, which was the out-of-the-box version.

2) Should I disable the Modem Enumerator by going to Device Manager > Modem Enumerator > Properties > General Tab > Device Usage; & check the box for "Disable in this Hardware Profile"? Thanks.

mark4man
 
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I don't think that it could hurt to try. You can always re-enable it if that ain't the problem. Or- You ought to be able to reassign it to another IRQ so that it won't have to share one.
Also, you should be able to change drivers form within the Device Manager.
 
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