Friday, January 17, 2014

Emily C., McCoy, Ch. 3

Your Voice: An Inside View Ch 3: Resonance

  • What are the two fundamental types of resonance that occur in the human body? 
    • Free resonance and forced/sympathetic resonance. 
  • Why are the chest and head not good resonators for the projection of sound?
    • They are only perceived by the singer; they can feel the vibrations in their body, but it doesn’t do anything to amplify the sound. They’re covered in muscle/flesh to dampen the sound. 
  • What are the four traits common to all musical instruments, including the voice
    • Power/energy source, vibrator, resonator, articulator.
  • Why is the vocal tract considered to be a quarter-wave resonator?
    • Because it has a closed end and an open end for sound to escape. “Frequencies with a quarter-wavelength equal to the length of the vocal tract are the first to be resonated.” 
  • What is the relationship between the harmonic series and the resonance series of a quarter-wave system?
    • Resonance series only have odd-numbered harmonics (i.e. 1/4, 3/4, 5/4, 7/4)
  • Define musical resonance.
    • The intensification and enriching of a musical tone by supplementary vibration. 
  • What anatomical structures function as free resonators in the human voice?
    • Laryngopharynx, orpharynx, nasopharynx, nasal cavity, oral cavity, and trachea. 



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