Frequency Determines Pitch Pages 45-51 (section C)
What is Pitch? <ul><li>Pitch -  the quality of highness or lowness of a sound </li></ul><ul><li>Identify the high pitch an...
High and Low Frequencies <ul><li>Frequency is the measure of how often a wavelength passes a fixed point. </li></ul><ul><l...
What frequencies can humans hear? <ul><li>Humans hear between 20-20,000 Hz </li></ul><ul><li>Ultrasound - sound waves abov...
Natural Frequencies  <ul><li>Natural frequency - the frequency at which an object vibrates </li></ul><ul><li>Resonance - t...
Sound Quality <ul><li>Timbre - sound quality </li></ul><ul><li>Timbre can be explained by the fact that most sounds are no...
 
 
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  1. 1. Frequency Determines Pitch Pages 45-51 (section C)
  2. 2. What is Pitch? <ul><li>Pitch - the quality of highness or lowness of a sound </li></ul><ul><li>Identify the high pitch and low pitch in the video </li></ul><ul><li>http://www.youtube.com/watch?v=UYxHQ39Oq1o </li></ul>
  3. 3. High and Low Frequencies <ul><li>Frequency is the measure of how often a wavelength passes a fixed point. </li></ul><ul><li>Hertz (Hz) - one complete wavelength per second. </li></ul>
  4. 4. What frequencies can humans hear? <ul><li>Humans hear between 20-20,000 Hz </li></ul><ul><li>Ultrasound - sound waves above 20,00 Hz </li></ul>
  5. 5. Natural Frequencies <ul><li>Natural frequency - the frequency at which an object vibrates </li></ul><ul><li>Resonance - the strengthening of a sound wave when it combines with an object’s natural vibration </li></ul>
  6. 6. Sound Quality <ul><li>Timbre - sound quality </li></ul><ul><li>Timbre can be explained by the fact that most sounds are not single waves, but a combination of waves. </li></ul><ul><li>Sound quality is affected by: </li></ul><ul><ul><li>The combination of pitches </li></ul></ul><ul><ul><li>The way the sound starts and stops </li></ul></ul>

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