きょうのMML - MMLでサンプリング音声

音質が超良くなりました！ 矩形波 + 一番低い音 + エンベロープ0,127,127,0 が決め手です！

• t20000 l120 で音符を並べると 10,000Hz のサンプリングに相当
• 極端な音長設定で音を鳴らす場合、最後に普通の音符 (ここでは t120o4r4c4) を置かないと音が出なかったりする場合がある
• mmlのデータサイズに制限があるらしい。リピートや音符の長さをうまく使って圧縮すればもっと高ビットレートにできる
• 音質を上げようとしてディザリングとかしたら音符が増えすぎて再生できなくなった。とりあえずMMLのバッファがもっと欲しい！
• 下のサイン波の例では 40,000Hz で音を出している

MML化された「ジャンボ！」と叫んだ声のサンプリング音声

t20000 l120 @3 q16 @e1,0,127,127,0 o0
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v8c15
t120o4r4c4

MML化された1kHzのサイン波のサンプル

t80000 l120 @3 q16 @e1,0,127,127,0 o0
/:4000
  v8cv8cv10cv11cv12cv13cv13cv15cv14cv15c
  v15cv15cv15cv14cv14cv12cv13cv10cv11cv7c
  v9cv5cv7cv2cv5cv0cv4cv0cv1cv0c
  v0cv0cv0cv1cv1cv3cv2cv5cv4cv8c
:/

ちゃんとサンプリングレート40kHzで再生された場合、4秒間音が出る筈。
FlashのActionScriptって思ってたより早そうだなあ。