立式琴和三角琴的差別

今天老師再次問家裏是立式琴還是三角琴。因為下麵的練習曲，對家裏是立式琴的孩子非常不利。這是輪指練習，斷奏，要求均勻，良好顆粒感，速度要快。有些孩子急哭了也達不到老師的要求。老師為了不讓孩子跟琴較勁，都事先問清家裏什麽琴，再提要求。

曾經有一次老師隻提要求，那孩子回家怎麽練也不行。回課時，在老師的琴上馬上就變得特別輕鬆無比。結果是那孩子家裏是立式琴。

 

立式琴和三角琴的區別就像飛機螺旋槳和噴氣式的區別。
 

  

三角琴單鍵複擊典型值每秒14次，立式琴每秒7次。這是擊弦機結構不同造成的差別。輪指時立式琴不給力。


這是普通立式鋼琴擊弦機，典型速度上限是每秒七次







這是普通三角鋼琴擊弦機，典型速度上限是每秒14次

 

立式琴鍵必須充分複位才能做下次動作，而三角琴鍵隻需半複位

 

16分音符輪指（複擊同一音符）：當速度標為Allegro，快板每分鍾120個四分音符也就是每分鍾480個十六分音符，每秒8次，立式琴就吃不消了；當速度標為Presto，急板每分鍾200個四分音符也就是每分鍾800個十六分音符，每秒13.3次，三角琴仍然遊刃有餘。

音樂速度表：

Quarter notes per minute, from slowest to fastest:
Larghissimo – very, very slow (24 BPM and under)
Grave – very slow (25–45 BPM)
Lento – slowly (45–50 BPM)
Largo – broadly (50–55 BPM)
Larghetto – rather broadly (55–60 BPM)
Adagio – slow and stately (literally, "at ease") (60–72 BPM)
Adagietto – slower than andante (72–80 BPM)
Andantino – slightly slower than andante (although in some cases it can be taken to mean slightly faster than andante) (80–84 BPM)
Andante – at a walking pace (84–90 BPM)
Andante moderato – between andante and moderato (thus the name andante moderato) (90–96 BPM)
Marcia moderato – moderately, in the manner of a march[4][5] (83–85 BPM)
Moderato – moderately (96–108 BPM)
Allegro Moderato - moderately fast (108-112 BPM)
Allegretto – close to but not quite allegro (112–120 BPM)
Allegro – fast, quickly, and bright (120–128 BPM) (molto allegro is slightly faster than allegro, but always in its range)
Vivace – lively and fast (132–144 BPM)
Vivacissimo – very fast and lively (144–160 BPM)
Allegrissimo (or Allegro Vivace) – very fast (145–167 BPM)
Presto – extremely fast (168–200 BPM)
Prestissimo – even faster than Presto (200 BPM and over)