Musical Acoustics Demonstrations

Musical Intervals and Harmonics

Background

The same basic music intervals are found in virtually all cultures, even though they differ in other aspects.  This similarity is due to the way that humans perceive sounds with harmonic components.

Instructions

Six of the strongest musical intervals are presented: M3 (major 3rd), P4 (perfect 4th), P5 (perfect 5th), M6 (major 6th), and P8 (perfect octave).  In each case, there will be three sounds, first the low note, then the upper note, then the two notes together.  Each tone has 7 harmonics.  Notice the relationships among the harmonics!
  • Play the sound file
  • Csound files

  • interval.sco
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