The Economist had an interesting tech article a couple of weeks ago, Noise-cancelling technology: Opting for the quiet life "MANY of those who talk loudly into their mobile phones are just inconsiderate show-offs for whom no punishment is too evil. Sometimes, however, there is an excuse. Noise in the background can make it hard for your interlocutor to hear what you are saying. Raised voices are an inevitable consequence.
Soon, though, this excuse will vanish. Thanks to advances in manufacturing techniques, which allow miniature mechanical components to be built into electronic chips, it is now possible to add better noise-cancelling features to phones, and also to other products, such as the small ‘earbuds’ used to listen to music players."
And only slightly related, Macworld wrote: 11 canalbud headsets compared
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