Organ Maintenance & Tuning Basics Flashcards

What is 'voicing' in the context of pipe organ maintenance?

Answer: Modifying the tone quality and volume of pipes by adjusting the mouth, languid, or toe hole

Voicing involves shaping the tone of a pipe by adjusting physical parameters like mouth width, languid height, and toe hole size.

Which tool is most commonly used to tune open metal flue pipes in the field?

Answer: A cone or roller used to open or close the pipe top

Open metal flue pipes are tuned by rolling or coning the pipe top to slightly open or close it, altering the speaking length.

What effect does high humidity have on wooden organ pipes?

Answer: It can cause wood to swell, potentially distorting pipe mouths or sealing joints

High humidity causes wood to absorb moisture and swell, which can warp pipe bodies, distort mouths, and affect speech and tuning.

In a tracker action organ, what is the function of the pallet?

Answer: It is the valve inside the wind chest that opens to admit air to a pipe

The pallet is a valve seated in the wind chest table that lifts when a key is pressed, allowing pressurized wind to enter the pipe channel.

A pipe that 'ciphers' is one that:

Answer: Speaks continuously without a key being pressed

A ciphering pipe sounds continuously because its pallet or valve fails to close, often due to a stuck key, swollen wood, or debris.

What is the purpose of the 'toe hole' at the base of a flue pipe?

Answer: It controls the volume of air entering the pipe foot to regulate loudness

The toe hole's diameter controls how much wind enters the pipe foot, directly affecting the pipe's loudness and speech character.

Which interval is organ tuners most commonly required to temper when setting equal temperament?

Answer: Fifths, which are narrowed by approximately 2 cents

In equal temperament, each perfect fifth is narrowed by approximately 2 cents (1/12 of the Pythagorean comma) to distribute tuning evenly across all 12 keys.