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樓主: admin

點解口琴壽命會咁短 ?

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 樓主| admin 發表於 2012-4-16 00:36:11 | 顯示全部樓層
器的保養與維修都很重要,可以延年益壽(人也如此)。不吹的口琴,才算"死琴"。

by man
 樓主| admin 發表於 2012-4-16 00:36:36 | 顯示全部樓層
few things to take note to prevent the broken reeds :

1. Do not over blow your har.  particularly the hole 9 to 12.. just lihgtly play..if you need lounder, use mic. and amp system

2. do not just play on 1 har. .. have a few harmonicas so that you are interchaging when you play.

3. try to play with different key.. like F, Bb, Eb.. so that not only certain reeds are being stress all the time

by kc_liaw
 樓主| admin 發表於 2012-4-16 00:37:30 | 顯示全部樓層
為吹果時產生force-->bending moment,shear stress-->條"片"就會elastic,過左elastic limit,就會deformation/fatigue.
其他"片"類樂器都有"片",但塊片冇口琴咁slim亦唔會同時受上下(吹吸)既force.
係咁e小弟畫左幅草圖,大概講當你吹果時,負責C 音(吹音)的"片"會響,但D音(吸音)的片會有力(扯/壓住佢),即時你奏出一個音,其實有2 道力,加上佢既DESIGN,joint 位大,受力位小(surface area),short 左既機會都高左!
小弟才疏學淺,識少少扮代表,依d所謂原因都係小弟想像,沒有實驗証,如有其他原因,請補充







by fat
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