Hello everyone! This is old fellow posting his first post.
I'm using one of my computers, mostly as signal generator for my electronics service/development workbench. I'm outputting mostly sinewaves from 30Hz to 10kHz. Last night I discovered bad performance from my audio equipment.
Horrible levels of noise were output on the audiocard line outs.
I'm using a Soundblaster Audigy ZS gold, and according to my oscilloscope measurements, there are a nasty 100mV peak to peak constant noise/garbage superimposed on my sinewaves. This garbage is constantly on, even if I mute my signal generator software, so this is really coming from the soundblaster. Also, the maximum output amplitude is quite low, about 360mV rms was the maximum signal I could get out of it. Running Windows 7 ultimate edition, all gain controls on maximum. My question is as follows:
Since I haven't used this soundcard in another computer, nor used another soundcard in the computer, I don't know which is to blame.
Could a noisy powersupply generate such problems? Or is this a known soundblaster issue and not worth to investigate even more than replacing the soundcard to a better one, like the audiophile 2496 perhaps.
Any input is welcome!
I'm using one of my computers, mostly as signal generator for my electronics service/development workbench. I'm outputting mostly sinewaves from 30Hz to 10kHz. Last night I discovered bad performance from my audio equipment.
Horrible levels of noise were output on the audiocard line outs.
I'm using a Soundblaster Audigy ZS gold, and according to my oscilloscope measurements, there are a nasty 100mV peak to peak constant noise/garbage superimposed on my sinewaves. This garbage is constantly on, even if I mute my signal generator software, so this is really coming from the soundblaster. Also, the maximum output amplitude is quite low, about 360mV rms was the maximum signal I could get out of it. Running Windows 7 ultimate edition, all gain controls on maximum. My question is as follows:
Since I haven't used this soundcard in another computer, nor used another soundcard in the computer, I don't know which is to blame.
Could a noisy powersupply generate such problems? Or is this a known soundblaster issue and not worth to investigate even more than replacing the soundcard to a better one, like the audiophile 2496 perhaps.
Any input is welcome!
