Skype has a dedicated sound test tool via which you can check to see whether both your microphone and speakers are working as they should. The tool works by having you call an automated computer ...

A good set of speakers can help turn your PC into the ultimate home entertainment rig. Here's what to look for when shopping, along with the best computer-friendly speakers we've tested.

That's the test-equipment hardware challenge. Equally or more important is knowing how to make the measurements. The plusses and minuses of simply measuring audio amplitude take up a page and a half ...