[Experiment2] Blocking the Holes in the Metal Frame
If you take a look inside the piano, you can see holes in the metallic frame. What effect do they have on the sound and how does it change when these holes are blocked? We made cardboard covers and tested the sound produced when these covers were in place.
Experimenting with Blocking the Holes in the Metal Frame
Results
- Cut cardboard discs to match the size of the holes.
- Block the holes by using double-sided tape to hold the discs in place.
- Press a key on the keyboard and listen to the sound.
Normal state
Holes blocked
*The sound recorded in the experiments differs from the actual musical pitch.
If you look closely, you can see that the outer circumference of the holes slopes upward toward the center from the flat surface of the frame, and the rim has a curved lip. With the holes unblocked, the sound had a sustained resonance and a full, rounded tone. When the holes were covered, the sound lacked brightness and luster, and felt slightly dull.
Musical Instrument Guide : Piano Contents
Origins
Structure
How to Play
How the Instrument is Made
Choosing an Instrument
Care and Maintenance
Trivia
- The White Keys and Black Keys Were Reversed on Pianos in Mozart's Day
- Did Mozart's Piano Have a Pedal-Board?
- Piano with Automatic Accompaniment System in Beethoven's Day
- The Pianos Beloved by the Great Master, Sviatoslav Richter
- The Optimal Material for Piano Frames Is Also Ideal for Motorcycle Engines
- The Piano Soundboard Is a Board that Also Stops Vibrations
- Why Can't There Be More Than 88 Keys on a Piano?
- Why a Grand Piano Keyboard Feels Heavier Than an Upright Keyboard?