Based on the characteristics of a sound, we can conclude:
► A sound is not enjoyable if its sound level is superior to 130dB.
► Different voices and instruments produce varying frequency combinations of sound and music. When these frequencies become inharmonious, they produce noise instead of enjoyable music. We say that the harmonics are anti-musical.
► By the end of the XIXth century, a comparison between the Oriental and the Western scales gave disappointing results. There wasn't the same number of notes, and there were some problems of translations (to play from the Western way to the Oriental one).
In fact, the Oriental pentatonic scales are very different from the Western ones : the Oriental one has 48 intervals in 2 octaves and the Western one has 12 intervals in 1 octave.
This is why the Oriental scale sounds more like noise (or disonant sounds) for us, the westerners. It is also because of the cultural differences, which are responsible of our feelings according to the musics all around the world.
► The violin is played around the world and was transformed by Indian musicians who created a special technique to play it.
This instrument is a very good example of how an enjoyable musical sound can easily turn into noise, if not constructed and played properly. A violin will also sound best if it is played in a room with good acoustics.
To summerise, this is how it works :
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Drawing the bow causes the string(s) to vibrate.
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These vibrations are transferred to the bridge, the front, the sound post, and the back of the violin.
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The air inside the hollow body of a violin vibrates at the same frequency, amplifying the sound. These sound waves emit from the f-holes.
All this scientific elements make us understand how a sound can be enjoyable for us.