Answer:
To produce different pitches and timbres on the berimbau, the player manipulates three key components of the instrument:
Tension of the string: The player can adjust the tension of the string by moving the small wooden wedge known as the "dobrão" up or down along the string. This changes the pitch of the string and allows the player to play different notes.
Position of the player's hand: By moving their hand up or down the length of the string, the player can change the sounding length of the string and produce different pitches.
Contact point of the stick: The player strikes the string with a stick or rod, known as the "vaqueta," at different points along the length of the string to produce different timbres. Striking the string closer to the gourd produces a deeper, more resonant sound, while striking the string closer to the player's hand produces a brighter, sharper sound.
Step-by-step explanation: