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製作一首歌曲

主聲道

現在就來搞定旋律吧。為了避免一遍遍重複playsleep指令,我們有個簡化指令:play_pattern_timed

如果你之前寫成了:

play :c2
sleep 0.5
play :d2
sleep 0.25
play :e2
sleep 0.75
play :d2
sleep 0.5

那現在可以寫成:

play_pattern_timed [:c2, :d2, :e2, :d2], [0.5, 0.25, 0.75, 0.5]

第一個列表 [:c2, :d2, :e2, :d2] 是一組音符,第二個清單[0.5, 0.25, 0.75, 0.5]是音符間的休止時間。

旋律

為你的歌曲創建一個名為:melodylive_loop。走捷徑的話使用play_pattern_timed function功能來編寫旋律。需要的話可以使用鋼琴。 下面是例子:

live_loop :melody do
  play_pattern_timed [:c4, :e4, :f4, :g4, :f4, :e4, :f4, :g4, :f4, :e4, :f4], [0.25, 0.25, 0.25, 1.5, 0.25, 0.25, 0.25, 0.25, 0.25, 0.25]
end

現在整首曲子聽起來是這樣的

use_bpm 120

live_loop :drums do
  sample :drum_heavy_kick
  sleep 1
  sample :drum_snare_hard
  sleep 1
  sample :drum_heavy_kick
  sleep 1
  sample :drum_snare_hard
  sleep 1
end

live_loop :hihat do
  sample :drum_cymbal_closed
  sleep 0.25
  sample :drum_cymbal_pedal
  sleep 1
end

live_loop :bass do
  use_synth :fm
  play :c2, attack: 0, release: 0.25
  sleep 0.25
  play :c2, attack: 0, release: 0.3
  sleep 2
  play :e2
  sleep 0.75
  play :f2
  sleep 1
end

live_loop :melody do
  play_pattern_timed [:c4, :e4, :f4, :g4, :f4, :e4, :f4, :g4, :f4, :e4, :f4], [0.25, 0.25, 0.25, 1.5, 0.25, 0.25, 0.25, 0.25, 0.25, 0.25], attack: 0, release: 0.2
end

哈,真是個好的開端!快去試試不同旋律、合成以及attack:release: 的數值。