One-bit wonder

时间:2019-03-07 02:05:06166网络整理admin

By Barry Fox Inventors often complain that politicians know nothing about technology. But former Australian prime minister Paul Keating proved otherwise when he invested in Lake Technology. Now the company’s co-founder David McGrath has been granted US patent 5 990 818. It describes a way of converting an audio signal into a stream of single bits, which can be amplified without loss of quality because it shifts any noise to a frequency too high to be audible. The technology has been licensed to Sharp (New Scientist, 24 July 1999,