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The Exploratorium

Sound Spectrum Chart

  Sound Spectrum Chart The world is full of sounds, but we can't hear them all. This full-color chart describes different groups of sound sources--musical notes, animal voices, natural sounds, and machine noises--and shows which are above, below, or in the range of human hearing. In addition, you'll learn how sound starts and how we collect, decode, and process it. Richly illustrated, this fact-filled reference chart is useful for students and instructors of human physiology, physics, and music, in middle and upper grades. An 11" x 17" Activity Guide provides ideas for experimentation, particularly suitable for middle grades.