There are many articles online that show you how to connect a microphone to a laptop. It does seem so easy and anyone can do it without much problem. Furthermore you don’t need much gadget to do it. All you need for simple system are microphone (preferable professional low impedance microphone i.e. shure sm58), microphone cable, a good sound card and a microphone input. Most laptops already have these features. However, most of us has no real problem with that but only when you get a low, poor quality audio out of the microphone that where the problem start.
Additional Notes (for laptop without line input):
Some laptop does not have line input, so mic input is used instead. Therefore when you connect your stereo plug into this mic input, humming or buzzing sound can be heard through your laptop speakers. This is because mic input is for mono signal, not quite right with stereo input hence the buzzing. To rectify this matter an additional plug is required i.e. 3.5 mm Mono plug. Faulty cable can also contribute to noise in the signal, so make sure you have a good cable.
|3.5mm mono plug|