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Wave Theory


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Brief overview of audio wave theory.

Published in: Technology, Education
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Wave Theory

  1. 1. Wave Theory Fundamentals of Audio DF1122
  2. 2. Sound <ul><li>Vibrations or waves, passing through matter that are detectable by the ears. </li></ul>
  3. 3. How does sound work?
  4. 4. What does a wave look like?
  5. 5. What’s a wave sound like? <ul><li>1kHz wave </li></ul>
  6. 6. Properties of Waves <ul><li>Frequency - Measured in Hz, this is the number of times the wave repeats in one second. </li></ul>Amplitude - The height or strength of the wave, measured from the peak to the centerline.
  7. 7. What does a wave look like?
  8. 8. Frequency
  9. 9. Frequency <ul><li>100 Hz </li></ul><ul><li>250 Hz </li></ul><ul><li>440 Hz </li></ul><ul><li>1 kHz </li></ul><ul><li>10 kHz </li></ul>
  10. 10. Frequency Fun Facts <ul><li> The human ear can hear from 20 Hz to 20 kHz. </li></ul> Lower frequencies are omni-directional, while higher ones are highly directional.  440 Hz is the note A above middle C on the piano and is the standard pitch for a tuning fork.
  11. 11. Wave Interaction
  12. 12. Phasing <ul><li>Sounds good </li></ul><ul><li>One side out of phase </li></ul><ul><li>Mixed together </li></ul>
  13. 13. Three Key Properties of Sound <ul><li>Frequency </li></ul><ul><li>Amplitude </li></ul><ul><li>Phasing </li></ul>