WHEN Scott Summerfeldt turned off his computer one night after work, he was amazed at just how quiet his office suddenly became. He hadn’t realised how noisy the fan in his PC was, so he decided to do something about it. And this week he announced the results of his efforts to a meeting of the Acoustical Society of America in New York.
Summerfeldt, a physicist at Brigham Young University in Provo, Utah, said he and his team have developed an anti-noise system suitable for any PC’s fan mechanism. It reduces noise in the same way that noise-cancelling headphones block…
