Subscriptions are the lifeblood of LWN.net. If you appreciate this content and would like to see more of it, your subscription will help to ensure that LWN continues to thrive. Please visit this page ...

When it comes to audio, the number of speakers you want is usually governed by the number of tracks or channels your signal has. One for mono, two for stereo, four for quadrophonic, five or more for ...

Some readers will no doubt remember attaching a playing card to the front fork of their bicycle so that the spokes flapped the card as the wheel rotated. It was supposed to sound like a motorcycle, ...