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p5.jsでHTML5を使って簡単に音楽アプリを作ろう
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FirstFourNotes,LLC
September 03, 2016
Technology
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p5.jsでHTML5を使って簡単に音楽アプリを作ろう
2016 HTML5 カンファレンス LT
FirstFourNotes,LLC
September 03, 2016
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Transcript
)5.-$0/'&3&/$& 'JSTU'PVS/PUFT --$ QKTͰ)5.-Λͬͯ ؆୯ʹԻָΞϓϦΛ࡞Ζ͏
ձࣾհ ԻָΛԋ͢Δਓɺௌ͘ਓ͕͑ΔΑ͏ͳָ͍͠αʔϏεΛ։ൃதɻ ۙϦϦʔε༧ఆɻ 'JSTU'PVS/PUFT --$ IUUQGJSTUGPVSOPUFTDPN
ձࣾհ ελʔτΞοϓͷ ٕज़ίϯαϧˍٕज़ࢧԉ ͳͲ͍ͯ͠·͢ɻ
ϝϯόʔհ̍ ϑΫγϟνϣʔ αʔόʔαΠυɾΠϯϑϥ୲ "84 ("& EPDLFSΖΖ ອըɺΠϥετɺσβΠϯ ౦༸ܦࡁΦϯϥΠϯͰ ΤϯδχΞ͋Δ͋Δ̐ίϚອը ࿈ࡌͯ͠·͢ʂ
΅΅ IUUQUPZPLFJ[BJOFUDBUFHPSZEJBSZ
ϝϯόʔհ̎ γϟνϣʔ ిࢠ࡞͔ΒϑϩϯτΤϯυ։ ൃɺϩϘοτΞϓϦ·Ͱ୲ ࣥචɺ༁ɺେֶͰڭ͑ͨΓ͠ ͯ·͢ QKTͷຊࣥච͠·ͨ͠ʂ ༝୩ IUUQTXXXBNB[PODPKQEQ
QKTͱʁ ▪ +BWB4DSJQUͰը૾ΞχϝʔγϣϯͳͲΛ؆୯ʹ͑Δ Α͏ʹͨ͠ϑϨʔϜϫʔΫ ▪ ಈըɾԻͳͲѻ͑·͢ ▪ ࡞ͬͨͷ8FCϒϥβͰಈ͖·͢ ▪ IUUQPUPSPOFUQMBOLT
1SPDFTTJOHʢϓϩηογϯάʣ͕ϕʔε 1SPDFTTJOHͱɺσβΠφΞʔςΟετ͚ ʹ։ൃ͞Εͨϓϩάϥϛϯάݴޠ QKTͰɺ1SPDFTTJOHҎ্ͷ֦ு͕͞Ε͍ͯ ͯɺ)5.-ͱ+BWB4DSJQU͕Մೳʹ͢Δػೳͷ΄ ͱΜͲ͕ѻ͑·͢
QKTͱ)5.- ▪ )5.-ͷػೳΛϥοϓͯ͠ɺ͑͘͞͠ΔΑ͏ʹ͍ͯ͠Δ – Πϕϯτͳ͠ͰϚελονύωϧ͕ѻ͑Δ – ͓·͡ͳ͍ͳ͠ʹΧϝϥϚΠΫΛ͑Δ – ΞχϝʔγϣϯͷϨϯμϦϯάϧʔϓ͕༻ҙ͞Ε͍ͯΔ QKTͷओͳػೳ
ରԠ͢Δ)5.-ͷػೳ %άϥϑΟοΫε $BOWBT Ξχϝʔγϣϯ ʵ ΦʔσΟΦ 8FC "VEJP"1* ಈը 7JEFPཁૉ Χϝϥ 6TFS .FEJB %0.ૢ࡞ %0.ૢ࡞ εϚʔτϑΥϯʢ͖ɺՃɺճసʣ %FWJDF"1*ͷҰ෦ 8FC"1*ͷݺͼग़͠ 9.-)UUQ3FRVFTU Ի߹ɺೝࣝ $POUSJCVUFE 8FC4QFFDI "1* εϓϥΠτ $POUSJCVUFE ʵ "SEVJOP࿈ܞ $POUSJCVUFE ʵ
σϞΞϓϦ σδλϧϋϯυϕϧ
σϞ
ΞϓϦͷߏ ▪ ΦʔσΟΦͱεϚϗΛͬͨσϞΞϓϦ ΦγϨʔλʔ USJ0TD Τϯϕϩʔϓ FOW λονύωϧ εϚϗΛৼΔ 音階設定
スタート triOsc = new p5.Oscillator("triangle"); triOsc.amp(env); triOsc.start(); env = new p5.Env(); env.setADSR(attackTime, decayTime, susPercent, releaseTime); env.setRange(attackLevel, releaseLevel); function touchStarted() { keys.forEach(function(k) { if (!found && dist(x, y, k.x, k.y) < k.radius) { triOsc.freq(midiToFreq(one_oct_midi_note[k.note])); } ); } function deviceShaken() { env.play(triOsc); }
͝ਗ਼ௌ͋Γ͕ͱ͏ ͍͟͝·ͨ͠ ΅΅-*/&ελϯϓ͋Γ·͢