The following post comes from my colleague Steve Ball, Senior Program Manager for Sound in Windows Vista, and continues his team’s on-going series on how Windows Vista treats various forms of audio.
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Part I: Why does my Windows sound sometimes “glitch?”
Windows is a rich and complex OS designed for multi-tasking users whose tasks must share access to scarce system hardware and resources. Unfortunately, despite multiple decades of incredible advances in PC and CPU architectures, there are non-trivial, complex interactions between applications, processes, and devices in even the most advanced personal computers that make a supposedly “easy” task — like playing back music without occasional glitches — much more difficult than it may seem at first glance.
Another way of thinking about this: it seems odd that a modern >$2000 PC may sometimes have trouble seamlessly playing back music when $20 CD players can effortlessly playback music without glitches.
So why do many $2000 PCs occasionally glitch while playing back music? The quick answer is this: Windows is not a single-function device like a CD player.
A slightly longer answer goes like this: even an average Windows machine today is commonly used simultaneously as a media player, word
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