#pitch.sound  the property of sound that varies with variation in the frequency of vibration
  supertype:  #sound_property_or_value__sound_property__soundproperty  an attribute of sound
  subtype:  #concert_pitch__concertpitch__philharmonic_pitch__international_pitch__internationalpitch  the pitch used to tune instruments for concert performances; usually assigns 440 Hz to the A above middle C
  subtype:  #high_pitch__high_frequency  a pitch that is perceived as above other pitches
     subtype:  #treble__soprano  the pitch range of the highest female voice
     subtype:  #tenor.high_pitch  the pitch range of the highest male voice
  subtype:  #key.pitch  pitch of the voice; "he spoke in a low key"
  subtype:  #low_pitch__lowpitch__low_frequency__lowfrequency  a pitch that is perceived as below other pitches
     subtype:  #deepness  a low pitch that is loud and voluminous
     subtype:  #alto  the pitch range of the lowest female voice
     subtype:  #bass  the lowest part of the musical range
  subtype:  #tone  (linguistics) a pitch or change in pitch of the voice that serves to distinguish words in tonal languages; "the Beijing dialect uses four tones"

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