Piano mechanics. The sound in the piano is extracted by hammering the strings. With the help of pegs, the strings are pulled onto the resonant deck (in the piano, the deck is in the vertical position, in the pianos – in the horizontal).
For each sound there is a chorus of strings: three for the middle and high ranges, two or one for the lower. Most pianos range from 86 semitones from a subcontract to a octave to 5 octaves (older instruments may be limited to a note of 4 octaves above; you can even find instruments with a wider range).
In the neutral position, the strings, in addition to the last one and a half to two octaves, are in contact with the dampers. When you press the keys, a device of levers, straps and hammers is called a piano mechanic. After pressing, the damper is separated from the corresponding choir of strings so that the string can sound freely, and a hammer studded with a fillet (felt) hits it. Continue reading