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西洋管乐器是一组非常常见的乐器,是管弦乐队和军乐队中不可缺少的重要组成部分,按照乐器发音方式的不同分为:吹孔气鸣乐器、单簧气鸣乐器、双簧气鸣乐器和唇簧气鸣乐器。小号属于唇簧气鸣乐器,事实上,这类乐器确实是铜制的,还包括军号、圆号、长号、大号等。唇簧气鸣乐器靠嘴唇振动发音。当唇振动时,气流通过杯状号嘴吹入管状体内,使管内空气随之振动发音,依靠启闭活塞装置或伸缩号管改变号管的长短,获得不同的音高,并由向牵牛花开放样式的喇叭口来扩大它的音量。
Western wind instrument is a very common set of instruments, orchestras and marching band is an indispensable and important part, according to the different ways of pronunciation of the instrument is divided into: blowing hole gas Ming instrument, monochromatic gas music instrument, double reed instrument and Labrador gas instruments. Trumpet lip gas spring musical instruments, in fact, this type of instrument is indeed copper, but also includes the bugle, French horn, trombone, large and so on. Labial gas instruments to vibrate lips vibration pronunciation. When the lip vibration, the air flow through the cup-shaped mouth blowing into the tubular body, so that the air inside the tube vibration pronunciation, depending on the opening and closing piston device or telescopic tube to change the length of the horn to obtain different pitch, Open the bell with flowers to expand its volume.