When you are immersing yourself in a sweet music, an absorbing movie or some amusing game, then you hear “chirp, chirp…” later “twitter, twitter…” it reappears from time to time. You grind your teeth and fly into a rage, because this annoying noise has cast a chill over you. This disgusting problem often happens, but sometimes it is so complicated that it makes you bite your nails then scratch your head crazily when fixing it. But if you follow the below instructions, things would be clear.
The inaccurate connection between audio card and expansion slot
Some computer cases and sound cards have been made coarsely or imprecisely, or installed unsteadily, which may result in poor connection between the golden finger and the expansion slot. This is a common issue for independent audio card. You can pull out and reinsert the sound card, or amend it with a tool like pliers.
Mistakenly connect your active speaker to the audio card Speaker output
Commonly sound card has two audio outputs, one is Line out, and the other is Speaker. Line out couples active speakers like speaker or amplifier, and Speaker couples passive speakers or a horn. Some audio cards depend on a jumper to choose the Line and the Speaker for it only has one fan-out. Manufacturers default such cards a Speaker output, thus you need to pull out the card to adjust its jumper.
Noise caused by motherboard and display card
The audio card is liable to be interrupted by other expansion cards, in particular by display card. Sometimes a PCI display card with a Bus Master function may bring about loud noise in PCI audio card, but if you disable its Bus Master, the performance of video adapter would be degraded greatly.
To solve this noise problem you can put the PCI sound card and display card into the PCI slots at intervals, or simply change to an AGP graphics card. You also can use an aluminum shield to enclose your sound card and keep it perfect earth for the purpose of avoiding negative effects on the audio card from the high-frequency radiation produced by motherboard and graphics card.
Your audio drivers can not support some sound cards
When you install audio drivers, you should select manufacturer driver rather than Windows default driver. If you use the Add New Programs in the Control Panel to install your audio driver, you should select to set it up from a CD-Rom or floppy disk, not to add it from Windows. If you have already installed Windows driver, well then right-click My Computer, select Properties then the Hardware tab and open Device Manager, double-click Sound, video and game controllers to extend it. Then right-click your audio devices, select Properties, click Driver tab, choose Update Driver and choose to install it from an installation CD-Rom or floppy disk. After that insert the disk that came with your sound card and install the manufacturer driver properly.
You have connected your microphone and audio card without a shield line
If you don’t utilize a shield line to connect your microphone and audio adapter or the line is bad earth, the high-frequency jam signals outside may go through your mike input circuit and cause noise. Remove your mike the noise will disappear soon. If a shield cable is in use, check whether the cable’s outer shield is good grounding.
Poor quality sound card
For some cheap and crappy ISA sound card, it would easily make noise even when your speaker is in a small volume. If the above approaches still don’t work, possibly it is because the capacitance of your sound card has decreased and it is incapable of filtering out noise signals, thereby you’d better replace your sound card.
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