2006-08-26 21:29:11 · 4 answers · asked by ahhong813 1 in Science & Mathematics ➔ Engineering
Your question makes no sense. There is no such thing as a "default" voltage for a sound card. The computer power supply sends the appropriate voltages to the card slots for what ever card you might put in a slot, be it a modem, sound card , video card or what ever.
2006-08-26 21:48:26 · answer #1 · answered by Dusty 7 · 2⤊ 0⤋
If you are talking about eliminating noise going into the sound card from the power supply and other noise due to the computer, the answer is to use a separately powered sound card with USB connection to the computer. Internal soundcards will always suffer more from noise than a separate external solution.
If you are talking about getting a voltage from the soundcard to power some external equipment it can be done depending on the soundcard. You can use the joystick input if it's still got one or the mic input if it has a voltage on it, but they are both low current and not really worth bothering with. If you wanted external voltage from the computer you would be much better using and extension from one of the spare PSU although I wouldn't really advise this as you could easily mess up your PSU if you don't know what your doing. A safer way would be to use a USB plug and get the power from their. The current available depends on the USB card design and your computer manual should have info. USB plugs are freely available or you can butcher a USB lead and info is available all over the web.
2006-08-27 05:30:36 · answer #2 · answered by Anonymous · 1⤊ 1⤋
If you are asking about equalizer, you could design some bound filter with different frequency.
The notch filter is suitable for specially frequency like 50Hz or 60Hz that it is made by power line.
2006-08-27 05:06:49 · answer #3 · answered by paymanns 2 · 0⤊ 0⤋
u can use hammer to hit ur sound card and filter it
2006-08-27 04:37:33 · answer #4 · answered by merdad b 2 · 0⤊ 0⤋