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人耳在一定音高和音量范围内感知声响和噪音。在一定音高以上或以下——大概在25.000周秒以上,20周秒以上的声响,我们是听不见的。人耳也听不清极弱或极强的声响,对于音乐,我们不想去下一个精确的定义,只满足于这样的说法:没有音高,音质,音强上的变化,只有声响,那不算是音乐。上述诸点全部或某些部分有了一定的变化,声响才成为音乐。浓雾信号的声响,恒音笛的嘟嘟声,甚至是管风琴上音量音色不变的任何一个音,都不能给人一种音乐的印象;将声响变成音乐的就是它的变化。音乐的表情由音高,音色和音量的变化程度所决定。一种乐器发
The human ear perceives sound and noise over a range of pitches and volumes. Above or below a certain pitch - probably above 25.000 weeks and over and over 20 weeks or so, we can not hear it. We do not want to go to the next precise definition for music, just to meet the argument that there is no change in pitch, sound quality, sound intensity, there is only sound, that is not Be music. The above points all or some parts of a certain change, the sound became music. The sound of a fog signal, the beep of a sounder, or even any sound of a constant tone on an organ does not give the impression of a music; the change of sound into music is its change. The expression of the music is determined by the degree of change in pitch, timbre and volume. A musical instrument