請詮釋以下文字

請詮釋以下文字




The pan flute is played by blowing horizontally across the open end against the sharp inner edge of the pipes. Each pipe is tuned to a note, called the fundamental. By overblowing, that is, increasing the pressure of breath and tension of lips, odd harmonics (notes whose frequencies are odd-number multiples of the fundamental),near a 12th in cylindrical tubes, may also be produced. The Romanian panflute has the pipes arranged in a curved array, enabling the player to easily reach all the notes by simply swiveling their head. These instruments can also play all the sharps and flats, with a special technique of both tilting the pipes and jaw movement, thus reducing the size of the pipe's opening and producing a change in pitch. An advanced player can play any scale and in any key. There are two styles of vibrato possible, hand vibrato and breath vibrato. In hand vibrato, the player applies a gentle motion to one end of the panflute (usually the high end) in much the same way as the violin vibrato is achieved by rocking the hand from the wrist. Breath vibrato is the same technique used by players of the flute and other woodwinds by use of the player's diaphragm.