在中古时期,人们就用动物角发声来传播信息。人们吹奏开孔的兽角或贝壳做狩猎、行列、战争的信号,或参与宗教仪式。当时这种工具只能发出一、两个声音,后来工业技术发展,人们模仿角的形状用金属制造了号,这便是被称为狩猎号的圆号。最初这种乐器略呈弯形,后人们发现如果把乐器加长,就可以吹出更多的高低不同的声音。这样就为吹奏者能吹奏旋律而提供了可能性。巴赫时代为了避免加长管子的不方便,将管子卷成圆形,中文译名“圆号”由此而来。圆号在国外叫法不一,英国人称法国号、美国人叫“角”、法国人称“轟”、意大利称“康勒”。然而称法国号的国家还是占大多数的。这是由于在圆号的改良和发展过程中,法国曾起了很重要的作用。再加上法国在欧洲又是有名的狩猎之乡,猎号是自然圆号的前身,自然圆号又是现代圆号的初级阶段。可见从欧洲的古代起,圆号就与法兰西这个国家有着紧密的联系。到了海顿时代它的体积已经缩小,形状和现代圆号差不多了。最初在管弦乐队中很少使用它,这是由于它只有自然音列, In medieval times, people used animal horns to spread the message. People play perforated horns or shells to make hunting, ranks, signals of war, or participate in religious rituals. At that time, such tools could only make one or two sounds. Later, with the development of industrial technology, the shapes of people imitating angles were made of metal, which is known as the hunting horn. Originally a slightly curved instrument, the latter found that if the instrument was lengthened, more and more different sounds could be blown out. This provides the possibility for the player to play the melody. In order to avoid the inconvenience of prolonging the pipe in the Bach era, the pipe was rolled into a circle, resulting from the Chinese translation of “French horn”. The French horn is called a “French horn” by the British, while the French call “horn”. The French call it “bang”, while Italy calls it “horn.” However, the French-speaking countries still account for the majority. This is because France played a very important role in the process of improving and developing the French horn. Coupled with the famous hunting in Europe is home to France, the hunting horn is the predecessor of natural French horn, natural French horn is the initial stage of the modern French horn. Can be seen from ancient Europe, the French horn on this country has a close contact. By the time Haydn its volume has been reduced, the shape and the modern french horn almost. It was seldom used in the first orchestra because it had only natural notes,