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(接上期)六、17世纪以后的铜管乐器1.自然小号(Natural Trumpet),是一种不带阀键的铜管乐器,杯形吹嘴。它只能吹出一些高音以及其基音的自然泛音,吹奏时需要高度吹气压力,与绷紧的嘴唇相互配合。后来,加入了接管(Crook),由此降低了基音和基音泛音列上的所有音。这种小号主要用于军乐,巴洛克早期,自然小号就被纳入西方艺术音乐的行列中。自然小号有两种,一种是直管的,例如比利时在2000年发行的邮票小全张中的直管自然小号(图14);还有一种名为“盘旋自然小号”
(Connected) VI brass instrument after the 17th century 1. Natural trumpet (Natural Trumpet), is a brass instrument without a key, cup-shaped mouthpiece. It blows only the natural overtones of the treble and its pitch, which requires a high degree of insufflation pressure and a tightening of the lips. Later, a Crook was added, thereby reducing all the pitches on the pitch and pitch harmonics. This trumpet is mainly used for military music, the early Baroque, natural trumpet was included in the ranks of Western art music. There are two natural trumpets, one is a straight tube, such as the Belgian natural trumpet (Figure 14) in the mini-album of stamps issued by Belgium in 2000, and the other is a trumpet called "