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Portable Network Graphic  |  1993-04-24  |  5.1 KB  |  512x342  |  4-bit (4 colors)
   ocr: ABOUT PITCHES The pitch of a note is defined by the impression it makes upon the listener compared to the other notes. The pitch can be higher or lower than another note. TWO notes belong to the same pitch- class if they are separated by an octave. All the notes named C belong to the same pitch-class. The requencies of a pitch-class are all multiples of each other. A in the 4th octave is 440 cycles per second while A in the fifth octave is 880 cycles per second. One has perfect pitch" if one can recognize the name of a note by hearing its pitch. The pitch recognition module is designed to aid ...