Created
December 3, 2016 14:42
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SoundNoteをPlayで再実装してきよしこの夜を鳴らす ref: http://qiita.com/butchi_y/items/d8b85aa3e13a835a33fa
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| sound[{SoundNote[7], SoundNote[7], SoundNote[7], SoundNote[3, 4]}, 1.5] |
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| sound[SoundNote[pitch_?NumberQ, time_?NumberQ, tspec_: Null, | |
| style_: Null]] := | |
| Sound[Play[Sin[440*2^((pitch - 9)/12) 2 Pi t], {t, 0, time}, | |
| SampleRate -> 44100]] |
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| noteExpand[str_String] := { | |
| First[StringCases[str, CharacterRange["A", "G"]]], | |
| First[StringCases[str, {"#", "b"}], ""], | |
| First[StringCases[str, DigitCharacter ..], "4"] | |
| } |
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| basePitch[s_String] := | |
| Piecewise[{{0, s == "C"}, {2, s == "D"}, {4, s == "E"}, {5, | |
| s == "F"}, {7, s == "G"}, {9, s == "A"}, {11, s == "B"}}, 0] | |
| accidentalToShift[s_String] := | |
| Piecewise[{{1, s == "#"}, {-1, s == "b"}}, 0] | |
| noteObjToNum[{sign_String, accidental_String, octave_String}] := | |
| 12 (ToExpression[octave] - 4) + basePitch[sign] + | |
| ToExpression[accidentalToShift[accidental]] | |
| noteToNum[str_String] := noteObjToNum[noteExpand[str]] | |
| pitch[val_] := If[NumberQ[val], val, noteToNum[val]] |
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| mid = Import["data/kiyosi.mid"] | |
| Export["kiyoshi-org.mp3", mid] |
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| mid = Import["data/kiyosi--www-ne-jp--asahi--music--myuu.mid"]; | |
| snd = sound[First[mid]] | |
| Export["kiyoshi-sine.wav", snd] |
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| noteExpand[str_String] := { | |
| First[StringCases[str, CharacterRange["A", "G"]]], | |
| First[StringCases[str, {"#", "b"}], ""], | |
| First[StringCases[str, DigitCharacter ..], "4"] | |
| } | |
| basePitch[s_String] := | |
| Piecewise[{{0, s == "C"}, {2, s == "D"}, {4, s == "E"}, {5, | |
| s == "F"}, {7, s == "G"}, {9, s == "A"}, {11, s == "B"}}, 0] | |
| accidentalToShift[s_String] := | |
| Piecewise[{{1, s == "#"}, {-1, s == "b"}}, 0] | |
| noteObjToNum[{sign_String, accidental_String, octave_String}] := | |
| 12 (ToExpression[octave] - 4) + basePitch[sign] + | |
| ToExpression[accidentalToShift[accidental]] | |
| noteToNum[str_String] := noteObjToNum[noteExpand[str]] | |
| pitch[val_] := If[NumberQ[val], val, noteToNum[val]] | |
| sound[SoundNote[p_String, time_?NumberQ, tspec_: Null, | |
| style_: Null]] := sound[SoundNote[pitch[p], time, tspec, style]] | |
| sound[SoundNote[p_String, timeLi_List, tspec_: Null, style_: Null]] := | |
| sound[SoundNote[pitch[p], timeLi]] | |
| sound[SoundNote[p_], timeLi_List] := | |
| sound[SoundNote[pitch[p], timeLi]] | |
| sound[SoundNote[p_String]] := sound[SoundNote[p, 1]] |
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| sound[SoundNote[pitch_?NumberQ, time_?NumberQ, tspec_: Null, | |
| style_: Null]] := | |
| Sound[Play[Sin[440*2^((pitch - 9)/12) 2 Pi t], {t, 0, time}, | |
| SampleRate -> 44100]] | |
| sound[SoundNote[pitch_?NumberQ]] := sound[SoundNote[pitch, 1]] | |
| sound[SoundNote[]] := sound[SoundNote[0]] | |
| sound[SoundNote[pitch_?NumberQ, timeLi_List, tspec_: Null, | |
| style_: Null]] := | |
| Sound[sound[SoundNote[pitch, (#[[2]] - #[[1]]) &@timeLi]], timeLi] | |
| sound[SoundNote[pitch_?NumberQ], timeLi_List] := | |
| Sound[sound[SoundNote[pitch, (#[[2]] - #[[1]]) &@timeLi]], timeLi] | |
| sound[SoundNote[None, time_: 1]] := Sound[SoundNote[None, time]] | |
| sound[{sn__SoundNote}, time_?NumberQ] := Sound[sound /@ {sn}, time] | |
| sound[{sn__SoundNote}] := Sound[sound /@ {sn}] | |
| sound[SoundNote[{p__}, time_?NumberQ]] := | |
| Sound[sound[SoundNote[#], {0, time}] & /@ {p}, time] | |
| sound[SoundNote[{p__}]] := | |
| Sound[sound[SoundNote[#], {0, 1}] & /@ {p}, 1] |
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