Mumble / tf2 problem

[Ozzy]

As a few of you will have heard, I'm having some problems with mumble and tf2 at the moment. When I configure mumble in Windows everything sounds absolutely fine and crystal clear, yet as soon as tf2 is booted up the speech in mumble suddenly has a load of background noise which apparently sounds a bit like someone farting! It also makes this same 'farty' noise whenever I first connect to a game server as well, regardless of whether I'm speaking or not.

When I test it on a local loop with tf2 running in the background I can hear the noise you're all on about, but as soon as I shutdown tf2 it goes back to being crystal clear again.

Anyone got any ideas on what is causing the problem or how I can fix it? It doesn't bother me any, but I'm pretty sure the rest of the team would prefer it if I could sort it out for the sake of their ears!

[lifeless]

suggestion: can a mod move this into the public general software section? might get a better response from the wider community

[Paranoia]

Few Qs:

What OS are you running?
What sound card/chipset is it?
Does this happen with any other games (excluding source games)?
Does this happen with any other source games?
Does this happen with the mumble overlay disabled?

[Paranoia]

There's also a voice_forcemicrecord convar, which might be worth putting in autoexec.cfg.

Try it on both 1 and 0 and see if that makes a difference.

[Ozzy]

Yep, thanks for moving it, I wasn't paying much attention when I posted!

I'm running Vista and the sound is just from the motherboard, no seperate soundcard. The board is an MSI P31 Neo.

I've not tested it with any other games or with the overlay disabled, so I'll put that on my to-do list for tonight along with the forcemicrecord convar.

Cheers!

[Ozzy]

OK, an update!

The problem happens regardless of whether the overlay is enabled or disabled and the voice_forcemicrecord convar made no difference whether it was on 0 or 1.

I've tried running Portal and it didn't seem to give the same background noise that tf2 does. Interestingly the noise only starts when I'm actually connected to a game server, if I'm just sat at the tf2 main menu it still sounds fine, but as soon as I get on a game server the noise starts.

[Paranoia]

Do you have positional audio enabled?

Mumble Setting > Audio Output > Positional Audio

[Ozzy]

No it's unchecked.

[Paranoia]

Could you also check "Link to game and Transmit position" is unticked in the plugins tab.

It might also be worth trying to see if your mic goes weird without Mumble running, using sound recorder or such like.