音乐

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[ Last edited by 多哈 on 2005-4-16 at 18:52 ]

2Erhu is the most important bowed string instrument in China. It consists of a resonance cylinder, which is either a circle, hexagon or octagon, held by the neck made of ebony or rosewood. The resonance cylinder, which is covered with Indian python's skin, receives the sound of the string through bridge and produces the unique sound. The bow is made of thin bamboo stick with fibers from a horse's tail, which is characteristically placed between the two strings. The strings do not touch the neck (it has no finger board!), which enable to make more subtle and deep vibration. This is maybe why erhu is said to be the closest instrument to the human voice. Erhu is played in the upright position resting on the performer's thigh, with a plastic base attached to the bottom of the main body reducing high frequency damping.

Erhu has long history, nevertheless, many improvements have been made to the instrument and its playing methods that enabled it to become a new instrument with versatile sounds and expression. There are a lot of pieces specially written for Erhu ranging from traditional folk songs to classical music in China.

在A3时同其它乐器的对比，依次为二胡、小提琴、大提琴、人声

这个是二胡的

3Comparison with other instruments in A3

While Erhu follows the same basic principles of construction as other more familiar to us members of the violin family, it differs by being much more nasal in quality. Meanwhile, the sound of Erhu is so close to human voice - sometimes, it sounds like a lady crying. Maybe this is why Chinese people usually use Erhu to play sorrowful melodies.

人声的

这个是小提琴的

这个是大提琴的

The spectral energy distribution:
In comparison with violin and cello, Erhu has the property of narrow spectral bandwidth and a concentration of low-frequency energy. The timbre of Erhu shows a fixed formant structure. There are mainly three peaks in the frequency spectrum - the one around 500Hz, the one around 1500Hz, and the one around 3000Hz approximately*. Besides, it suggested that the envelope below the first formant should be very sharp. This makes the fundamental, when the pitch is not high enough, largely missing in most cases. The phenomenon coincides with [4], in which, the author thought, it was due to the string  was bowed close to the bridge**. In the above tones, energy distributed not exactly the same even in the same pitches. It depends largely on the specific techniques and construction features. In addtion, the somewhat rough sound quality of Erhu can be seen from its spectrum - there is large energy distributed on nonharmonics according to the above figures.
*In the idealized case,the timbre of human voice has formant frequencies at 500, 1500 and 2500Hz with bandwidths of 60 to 100Hz when with approximately 17cm long vocal tract and a uniform tube. This is amazingly close to that of Erhu. Is it the reason for Erhu's similar sound with huamn voice?
**why?
Temporal patterns:
Like other string instruments, Erhu doesn't show much synchronicity in the collective attacks and decays of upper harmonics. During the attack segment, Erhu displays more low-amplitude inharmonic energy than violin and cello, which makes the figure more fuzzy in the initial segment. This might be another reason to explain why Erhu sounds rougher than the other two.

看看作者的照片

再来一张

。。。。。。。。。。晕死

好靓啊！你认识。。。？

写中文，谢谢

有没有0.5%的人能把二胡不土里土气拉? 估计没有.

但是，会越来越好的——但是如果是“烤全羊”（呵呵～靠全洋）的是不是也不行呢？那样的话，是不是二胡就会被小提琴替代了呢？ [:smilie:]25.gif[/:smilie:]