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降号

在高音谱号中的降号和重降号,放在高音谱号后面的降号,放在哪个线(或间)上,代表这个线(或间)上的所有音都降半音

降号(英语:Flat),又称降音符降记号,是在五线谱乐谱中,放在音符前面的变音记号,代表这个音符的音高要比标定的低半音,读作“降某音”。

十二平均律理论中,降B等于升A,降G等于升F。但在经典音乐理论中,升半音和降半音是由五度音高推演出来的,两个音之间尚有微小的差别。

此外,重降号双降),用两个降号并列表示降两个半音(Double Flat,标记为双降)降低两个半音后的音高通常等同于另一个自然音,因此在调号升降记号不多时较少使用重降号。,通常在降D大调降G大调降C大调这类降号较多的调性音乐中有可能出现,如B双降、E双降等。

另外还有降三个半音高的三降号三降[1],用三个降号叠加表示,但应用的很罕见。

另外,在微分音音乐中,以四分之一音降号(quarter-tone flat)、或称半降号(half flat)表示四分之一音,即是反转的降号(半降)或者是在降号上加上一个杠(flat stroke)。Play 另有四分之三降号(three-quarter-tone flat)、或称1½降号sesquiflat),以一个反转的和一个普通的降号(降三分四)表示。

音频中播放的是介于C与D的微分音。Play

电脑编码

Unicode编码中,降号“♭”编码为U+266D,HTML的输入为♭。 双降号编码为U+1D12B,HTML的输入为𝄫。 有时为了简便,也会使用小写字母“b”代替降号。

  1. ^ Byrd, Donald. Extremes of Conventional Music Notation. Indiana University Bloomington. September 2016 [4 November 2016]. (原始内容存档于2010-03-08). 
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降号
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