Upright Piano action

Question 1

What is the primary function of the action in an upright piano?

Answer 1

To translate the motion of the keys into hammer strikes on the strings.

Question 2

True or False: The action mechanism in an upright piano is similar to that of a grand piano.

Answer 2

True

Question 3

Fill in the blank: The _______ is the part of the piano action that strikes the strings.

Answer 3

hammer

Question 4

What component connects the key to the hammer in an upright piano action?

Answer 4

The whippen

Question 5

Multiple choice: Which part of the piano action is responsible for returning the hammer to its resting position?

Answer 5

b. The damper

Question 6

What is the role of the damper in an upright piano?

Answer 6

To stop the vibration of the strings when the keys are released.

Question 7

True or False: The action consists of over 50 individual parts.

Answer 7

True

Question 8

What mechanism is used to control the dynamics of the sound produced by the piano?

Answer 8

The velocity of the key press.

Question 9

Fill in the blank: The _______ regulates the speed and force of the hammer strike.

Answer 9

action

Question 10

Multiple choice: Which part of the action provides the necessary leverage to lift the hammer?

Answer 10

c. The jack

Question 11

What is the function of the key in an upright piano action?

Answer 11

To initiate the action mechanism when pressed.

Question 12

True or False: The upright piano action is designed to be more compact than that of a grand piano.

Answer 12

True

Question 13

What part of the action can be adjusted to change the touch response of the piano?

Answer 13

The regulation screws

Question 14

Fill in the blank: The _______ is the part that prevents the hammer from striking the strings when the key is not pressed.

Answer 14

damper

Question 15

Multiple choice: Which part of the action is often made from felt to absorb sound?

Answer 15

a. The hammer

Question 16

What is the purpose of the back check in the piano action?

Answer 16

To prevent the hammer from falling back too far after striking the strings.

Question 17

True or False: The upright piano action allows for a faster repetition of notes compared to a grand piano action.

Answer 17

False

Question 18

What part of the action allows for the hammer to be lifted quickly?

Answer 18

The jack

Question 19

Fill in the blank: The _______ connects the key to the action and allows for movement.

Answer 19

lever

Question 20

Multiple choice: Which part of the piano action is primarily responsible for the articulation of sound?

Answer 20

b. The hammer

Question 21

What is the primary material used for the piano hammers?

Answer 21

Felt

Question 22

True or False: The action mechanism in an upright piano includes a system of levers and springs.

Answer 22

True

Question 23

What is the purpose of the spring in the action mechanism?

Answer 23

To provide tension and return the components to their original position.

Question 24

Fill in the blank: The _______ is the part that moves downward when a key is pressed.

Answer 24

whippen

Question 25

Order of operations in upright

Answer 25

Key pressed
Back of key rises and pushes Capstan
Capstan pushes Whippen
Whippen tilts forward, forcing jack up and forward
Pushes hammer butt, hammer moves to the string
After impact, hammer falls back to rest
If key held down, hammer caught by back check and jack resets under butt