2-4 Quality and Sound

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2-4 Quality and Sound

• Sound quality is also called timbre
• Every sound produced has a fundamental tone which
  is the overall pitch or frequency of a tone.
• Also along that fundamental tone there can be
  higher frequencies called overtones.
• Overtones give a sound its identifiable
  characteristics. Flute compared to an oboe.
• The overtones create a sounds timbre.

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Music vs. Noise

• Music has an identifiable pitch (fundamental
  tone)
• Music has rhythm a repeating pattern
• Music has a pleasing quality (relationship
  between the overtones and fundamental tones)
• Noise does not have any of the above.
• Are there sounds that are neither music nor noise?

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4 Groups of Instruments

• Brass Columns of air are vibrated by lips
  buzzing.
• The longer the column of air the lower the pitch.
  
• Example Trombone
• Woodwinds Columns of air are vibrated by a reed
  or air being blown over an opening.
• The longer the column of air the lower the pitch.
• Example Flute

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• Percussion a vibration is created by an object
  being struck
• Pitch can be changed by tightening the membrane
  that is being struck.
• Example Snare drum
• Stringed instruments Strings are either rubbed,
  or plucked to create a vibration
• A higher pitch is produced when the string is
  thinner, tightened, or shortened.
• Example violin
• What group does a piano fit into?

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