amortiguador de fieltro
/ˌamoɾtˌiɣwaðˈoɾ ðe ˈfjeltɾo/
n
English: muffler felt · 弱音毡
Significado：Strip of felt that comes between the strings and the hammer heads when the muffler pedal is pressed; it lowers the volume of sound.
English: muffler felt · 弱音毡