関連ワード:
what do you understand by the term pitch of sound what do you understand by the term loudness of sound what do you mean by pitch of sound what do you mean by frequency of sound what do you mean by frequency of sound wave what do you mean by frequency of sound is 20 hz what do you mean by frequency of sound is 50 hz what is the meaning of pitch of sound how is sound pitch (or level) defined what is pitch related to in terms of sound
