A digital signal processing apparatus is provided for identifying the octave, note and cent of a musical sound. The apparatus includes a transducer for converting the musical sound into an electrical signal, a plurality of digital detection units, each dedicated to a particular sub-scanning interval...http://www.google.fr/patents/US5056398?utm_source=gb-gplus-shareBrevet US5056398 - Digital audio signal processor employing multiple filter fundamental acquisition circuitry
Digital audio signal processor employing multiple filter fundamental ...
