A recording method includes converting an original sound signal into a digital sound signal in a selected conversion range, selecting the conversion range in accordance with the amplitude information of the original sound signal, and storing and recording the digital sound signal. The apparatus includes...http://www.google.es/patents/US5089820?utm_source=gb-gplus-sharePatente US5089820 - Recording and reproducing methods and recording and reproducing apparatus
Recording and reproducing methods and recording and reproducing apparatus
