A multitrack audio system having rotary heads by which audio signals are recorded onto a plurality of tracks and played back from the tracks on a magnetic tape comprises a track grouping circuit for dividing the tracks into track groups having the predetermined number of tracks; a type switching circuit...http://www.google.fr/patents/US5157557?utm_source=gb-gplus-shareBrevet US5157557 - Multitrack system for PCM recording and playback of audio signals and supersonic waves
Multitrack system for PCM recording and playback of audio signals and ...
