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- #External sound card for laptop with line in how to
- #External sound card for laptop with line in serial
- #External sound card for laptop with line in Pc
- #External sound card for laptop with line in plus
This is usually better than relying on the earthing provided by a tiny 3.5mm jack lead connected to the laptop's audio output, and the often tiny earth track connecting it on the circuit board.
#External sound card for laptop with line in serial
If a laptop audio problem is due to indifferent earthing arrangements (laptop audio quality is rarely very high up on the list of manufacturers' priorities, so hefty ground planes and internal shielding are less likely), you can sometimes improve things by creating an earth connection using a cable plugged into an unused laptop serial or parallel port, connecting its screen at the other end to your mixer.
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Analogue cables should also be kept away from digital ones where possible. Also, try to avoid running such cables in parallel with each other, crossing them at right angles if possible and keeping them well away from CRT monitors, wall-wart power supplies, and particularly the switched-mode PSUs often used by laptops and flat-screen monitors. While we're discussing such 'proximity' interference, remember that the screening of even high-quality audio cables isn't perfect, so keep external analogue and digital ones at least several inches away from mains cables where possible. If you can't indulge in some slot-swapping to improve the situation, at least make sure you can see daylight between the two cards, and if in doubt slip a sheet of paper between them to ensure that no component is in electrical contact with one of its neighbours. Also, if it has a piggyback-mounted daughterboard (like Yamaha's SW1000XG and its associated PLG boards, for instance), this may make it come perilously close to adjacent expansion card components. Nevertheless, it pays to be cautious, so make sure when installing a new soundcard in a desktop computer that you don't drape other cables over or near it that are carrying digital signals to USB ports, hard drives, and so on. This is largely due to the huge advances in the design of soundcard ground planes, multi-layer circuit boards, and greatly improved filtering of the incoming power supply signals to remove any digital noise.
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However, internal interference from other computer devices rarely causes audio problems nowadays. Models such as the Lynx Two shown here are capable of a dynamic range exceeding 116dB.When I first started reviewing soundcards, you could get digital interference problems just by installing them close to a badly-behaved graphics or SCSI Host Controller card, since these can sometimes push out a lot of radio-frequency (RF) interference - some nVidia graphic cards have apparently proved troublesome in this respect. Plenty of people tried, however, with a variety of home-brew solutions such as wrapping a makeshift screen from metal foil (placed in a polythene bag to insulate it) around the soundcard, and attaching this via a wire to the computer's metal chassis to earth it.ĭespite its lingering reputation as a poor audio relation, the PCI soundcard is capable of superb audio quality, even when placed in the hostile environment of a computer. All too often you could hear background noises when the CD-ROM or hard drive were accessed, when you moved your mouse, or when your graphics card re-drew any part of the screen display, and there was little you could do to improve the situation.
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I suspect PCI's bad reputation largely came about during the early days of soundcard design, when background noises were all too common in 16-bit models, and you were lucky to get a dynamic range of more than 60dB with models such as the Gravis Ultrasnd and Sound Blaster AWE32. Quite a few musicians still seem to think that choosing a PCI soundcard is more likely to give them audio problems than a USB or Firewire audio interface, but the reverse is sometimes true.
#External sound card for laptop with line in plus
These can occur both inside and outside the computer, but thankfully most can be cured with a little knowledge, a little sleuthing, plus the occasional use of a soldering iron.
#External sound card for laptop with line in Pc
For PC users, I've written about many such causes and some possible solutions in previous issues of SOS (most recently in SOS May 2003), but there is another set of audio problems that can cause untold frustration for all computer users - fundamental hardware issues that cause hums, buzzes, and other background noises. While there are plenty of possible causes of clicks and pops in digital audio recordings, most are related to the way the computer has been set up, are problems with the soundcard drivers, or are due to incompatibilities with other expansion cards in the same machine.
#External sound card for laptop with line in how to
We take a look at what causes them, and how to banish them for good! Many of the unwanted hums, clicks, and whirrs that compromise the performance of your computer studio are nothing to do with software.