Musical instrument of innovative design

Abstract

Introduction: An innovative piano mechanism design has been developed at the Faculty of Transport Systems and Mechanical Engineering of the Georgian Technical University.

               In existing designs of factory pianos, when you press a key, its back part raises the hammer mechanism along with the pin. The spiller, in turn, sets in motion the shulter mounted above it, due to which the hammer begins to move in the direction of the strings. After the hammer hits the strings, the blow immediately stops and the hammer returns to its original position. With the help of a hammer mechanism, each key sets into oscillatory motion three strings, tensioned on cast iron frames, that respond to the sound of one note.

Materials and methods: The new piano has an innovative design for attaching strings and contains two parallel frames, made of bronze and plated with silver, facing each other in a mirror image, on which strings tuned to different tones are stretched in such a way that three strings forming one note are attached to one frame, and those forming the same note the remaining three strings go to the other.

               In a piano mechanism, the lever of one key operates two hammer mechanisms, which are arranged in a V-shape. Each hammer acts simultaneously on three strings and, accordingly, for each key there are six strings in contact with two hammers of one key. Each musical note sounds simultaneously in three octaves, of which every two strings are tuned one octave, the next two are tuned an octave higher, and the remaining two strings are tuned two octaves higher. The innovative design takes into account the possibility of achieving tremolo and reverb effects, for which each half tone is raised by 437+√(12&2) hertz, which provides the ability to further lower the half tones.

Results and discussion: To test the achieved effect of the new design, a prototype piano was made at the Georgian Technical University and comparative tests were carried out with factory copies of Belarus, Petroff, Becker.

               Tests have shown that the power of a piano of an innovative design exceeds modern factory instruments by almost 2.5 - 3 times. The sounds of the instrument are distinguished by high resonance. The sound of each note simultaneously occurs in three octaves and at the same time, in each octave two strings are consonant. Silver-plated bronze frames enhance the sonority and add additional beauty to the sounds.

Conclusion: Considering the advantages of a piano of innovative design compared to factory instruments, we can recommend it for mass production.