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5.共鸣体的材料、尺寸和形状弦乐器的共鸣体是由音板、琴马、音柱、琴腔等组成。它们的材料、尺寸和形状直接关系到乐器的音色和音量。三角钢琴的音响之所以与立式钢琴有很大差别,正是由于它有着比后者大的音板和长且张力强的琴弦。十八世纪的钢琴,张弦支架是木结构的;琴弦以铜丝为主,张力较小。十九世纪初,改用了金属支架,后又采用钢丝琴弦,调音提高到A～440赫,从而使钢琴的音量和音色大大地增强和改善。钢琴的音板呈方形或近似方形。竖琴的音板呈细长尖塔状。由于它们的形状不同,发出声音的音色亦各异。音板的选材是历代制琴家们所非常重视
5 resonance body material, size and shape of the stringed instrument resonance body is soundboard, piano, sound column, piano chamber and other components. Their material, size and shape are directly related to the instrument’s tone and volume. The reason why the grand piano sound and vertical piano is very different, it is because it has a larger than the latter soundboard and long and strong strings. Eighteenth-century piano, stringer bracket is a wood structure; strings to copper-based, less tension. The early nineteenth century, the use of metal stent, and then the use of steel strings, tuning increased to A ~ 440 Hz, so that the piano volume and tone greatly enhanced and improved. Piano soundboard square or square. Harp soundboard slender minaret shape. Due to their different shapes, the sounds of the sounds are also different. Soundboard selection is the history of piano makers who attach great importance