| i found problem in OpenBSD i386 3.5 stable, this problem also exist in
| 3.4 stable.

Are you *really* sure it's the OS ?

$ dmesg |grep -A4 "emu0 at"
emu0 at pci0 dev 10 function 0 "Creative Labs SoundBlaster Live" rev 0x0a:
irq 9
ac97: codec id 0x454d4328
ac97: codec features 18 bit DAC, 18 bit ADC, No 3D Stereo
audio0 at emu0
"Creative Labs SoundBlaster Live Digital Input" rev 0x0a at pci0 dev 10
function 1 not configured


| $ cat /etc/mixerctl.conf
| inputs.mic=7
| inputs.mic.mute=on
| record.volume=15,15
| record.volume.mute=on

$ mixerctl inputs.mic inputs.mic.mute record.volume record.volume.mute
inputs.mic=255
inputs.mic.mute=off
record.volume=15,15
record.volume.mute=on

| By default microphone is mute, but when play any audio file
| mic volume is on and if speakers volume is center (from 1 min
| to 8 max,| now is 4, sorry of my bad english)
| i hear terabble noise.

I'm playing my techno collection at this very moment and the
sound quality is perfect. (as in *Cristal Clear*) no noise at all.
(Some might call it noise though, you know 'old people')
But seriously, works fine here with 3.4 & 3.5
My mic doesn't have your issues either.

| Any body know how to resolve this problem?

Hmz.. what are the specs of your machine ? (Mem/Cpu)
Did you try loading your bios to it's default configuration ?

| Regards,
| Condor

Good luck.


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