The present invention relates to a method for eliminating noise in a signal. The frequency band of the signal is divided into sub-bands, whereafter the useful value of the signal of each sub-band is determined by comparing the signal level to a reference level, in which case a constant signal of substantially...http://www.google.co.uk/patents/US5285165?utm_source=gb-gplus-sharePatent US5285165 - Noise elimination method
