乐器是可以发出音乐声的物体或器具。 如果不把自然界的一些音响如流水声、鸟啼声、虫鸣声等在特定的情况下也算成音乐的话,那么,自古以来,音乐就分成两大类,即人的歌唱和乐器的发声。而这两类音乐中,无论从音域的广阔、音色的丰富、强弱的变化,声部的多少等方面,乐器都大大地超过了人的声音。 乐器也被称为发出音乐声的机器,因为任何一种乐器实际上也就是一种声学仪器。对乐器的结构进 An instrument is an object or apparatus that emits sound of music. If we do not regard some of nature’s sounds as flowing water, birds crying, buzzing sound, etc. into music under certain circumstances, then music has been divided into two categories since ancient times, namely human singing and instrument sound . In both types of music, musical instruments greatly exceed the human voice in terms of the vastness of the sound field, the abundance of tone, the change in strength, and the number of parts. Instruments are also called machines that emit music because any kind of instrument is actually an acoustic instrument. The structure of the instrument into