Unity_VolumeEffect - Speaker Deck

Unity_VolumeEffect

by Cova8bitdots

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Իྔͷجૅˍ  ɹɹUNITY্ͰͷԻྔԋग़ UNITYΦʔσΟΦ׬શʹཧղͨ͠

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͸͡Ίʹ ొஃऀ৘ใ Twitter: @8bitdots ήʔϜͱα΢ϯυେ޷͖UnityΤϯδχΞ  ʢ≠α΢ϯυΤϯδχΞʣ

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Իྔͷجૅ Իྔʹ͍ͭͯ < ͜͜ͷSEͪΐͬͱ͏Δ͍͞Ͱ͢Ͷ ͦ͏ͨ͠ΒͱΓ͋͑ͣ3dB ఔԼ͛ͯ΋Β͑·͔͢ʁ> < (AudioSource.volume ͬͯ0.0~1.0 ͳΜ͚ͩͲͳ͊ɻ  ԿݴͬͯΔΜͩʁ) Έ͍ͨͳ΍ΓͱΓͷܦݧ͸ͳ͍Ͱ͠ΐ͏͔ʁ

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Իྔͷجૅ Իྔʹ͍ͭͯ ▸ Իڹֶత؍఺ ▸ ʮԻྔʯͱ͍͏ݴ༿͸ͳ͘ʮԻѹʯʮԻͷڧ͞ʯʮԻڹύϫʔʯͳͲͷ  ෺ཧྔΛఆٛ ▸ Իѹ p[Pa] ͷԻѹϨϕϧ(SoundPressureLevel) Lp [dB]        p0 ɿج४Իѹ஋(1kHz ͷ࠷খՄௌԻ) = 2.0x10-5[Pa]  ▸ σδλϧ৴߸ॲཧ  [0.0 1.0] Ͱਖ਼نԽ͞Ε͍ͯΔͷͰͦͷର਺Λͱͬͯ͋͛Δ  ˠ[-∞ 0.0] ʹม׵

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Իྔͷجૅ Իྔʹ͍ͭͯ ▸ Ұൠతʹਓؒͷײ֮ྔ͸  ෺ཧྔͷର਺ʹ΄΅ൺྫɹɹɹɹɹɹɹ ▸ ਓؒͷײ֮ʹ߹ΘͤͨԻྔ  ˠϥ΢υωε ౳ϥ΢υωεۂઢ(ISO226:2003)  ʰԻڹֶೖ໳ʱΑΓҾ༻ ʰԻڹֶೖ໳ʱΑΓҾ༻

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Իྔͷجૅ ϥ΢υωεͷݱ࣮ ▸ ςϨϏͳͲͷ์ૹۀք  ຽ์࿈ɿhttps://j-ba.or.jp/category/t032  ฏۉ: -24LKFS (Loudness K-weight Full Scale)Ͱ౷Ұ ▸ ήʔϜۀքͰ͸ ▸ ίϯγϡʔϚʔɿ2012೥ʹCEDECͰηογϣϯ͕͋ͬͨ΋ͷͷ…  https://www.slideshare.net/IGDAJ_SigAudio/sigaudio1-cedec2012 ▸ ϞόΠϧɿTencent Ͱ͸େମ-16LKFS ఔ౓ʹἧ͑ͨͱͷ͜ͱ  https://cedil.cesa.or.jp/cedil_sessions/view/1806 ▸ UnityͰ͸ ▸ AudioMixerʹVUϝʔλ͸͋Δ΋ͷͷ…

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Իྔͷجૅ ԻׂΕ ▸ ԻྔΛ্͛ΔͱԻׂΕ͢Δ  ˠԻ͕Ճ޻͞Εͨײ͡ʹฉ͑͜Δ ▸ ݪҼɿ  Mathf.Clamp( ೾ܗ, -1, 1 ) ͕ߦΘΕΔͨΊ

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Իྔͷجૅ ԻׂΕ ▸ ݩ೾ܗ          ▸ ԻׂΕ          ݩ೾ܗΛ4ഒʹ૿෯  ˠ೾ܗαΠζௐ੔  ˠ0.5 Ҏ্,-0.5ҎԼ͕ਅͬฏΒʹ εϖΫτϥϜ εϖΫτϥϜ ೾ܗ ೾ܗ ԻׂΕ͕ى͖Δˠۣܗ೾Έ͍ͨʹ೾ܗ͕มԽ͍ͯ͠Δ

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Իྔͷجૅ ԻׂΕ ԻׂΕͰ೾ܗ͕ۣܗ೾ͬΆ͘ͳͬͨ  ˠۣܗ೾ʹ͍ͭͯߟ͑ͯΈΔ ▸ ϑʔϦΤڃ਺ల։ ▸ ͬ͘͟Γͱͨ͠આ໌ɿ  पظؔ਺Λsinͱcos ͦΕͧΕͷഒԻΛͲΜͲΜ଍͠߹Θͤͯۙࣅ͢Δදݱ  ▸ ஸೡͳઆ໌ɿ  पظTͷؔ਺f(t) Λۮؔ਺ͱحؔ਺ͷ࿨Ͱදݱ εϖΫτϥϜ εϖΫτϥϜ ೾ܗ

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Իྔͷجૅ ೾ܗͱϑʔϦΤڃ਺ల։ ▸ ۣܗ೾ΛϑʔϦΤڃ਺ల։Λ࢖ͬͯදݱͯ͠ΈΔ  حؔ਺ͳͷͰۮؔ਺੒෼(an )͸શͯ0    حؔ਺੒෼

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(t) ͷΈ

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(3t) ·Ͱͷ࿨

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(5t) ·Ͱͷ࿨

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(11t) ·Ͱͷ࿨

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(21t) ·Ͱͷ࿨

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(41t) ·Ͱͷ࿨ ͍ͩͿۣܗ೾ʹ͍ۙͮͯ͸͍Δ΋ͷͷ  ೾͕·ͩݟ͑Δ

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(101t) ·Ͱͷ࿨ ୺఺͸·ͩߥͿ͍ͬͯΔ͕  தԝ෇ۙ͸͍ͩͿ೾͕ࡉ͔͘ͳ͖͍ͬͯͯΔ

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ Sin(201t) ·Ͱͷ࿨ ͔ͳΓݟͨ໨΋ۣܗ೾ͬΆ͘ͳ͖͍ͬͯͯΔ

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Իྔͷجૅ ۣܗ೾ΛϑʔϦΤڃ਺ల։Ͱදݱ ۣܗ೾Λࡾ֯ؔ਺Ͱදݱ͢Δʹ͸ߴ࣍ഒԻͷॏͶ߹Θ͕ͤඞཁ  https://github.com/Cova8bitdots/FourieSample

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Իྔͷجૅ ԻׂΕʢ·ͱΊʣ ▸ ۣܗ೾ɿSin೾ͷߴ࣍ഒԻ·ͰͷॏͶ߹ΘͤͰදݱ ▸ ԻׂΕঢ়ଶˠ೾ܗ͕ۣܗ೾νοΫʹՃ޻͞ΕΔ  ɹɹɹɹɹˠߴ࣍ഒԻ͕উखʹ଍͞Εͯ͠·͏  ɹɹɹɹɹˠԻ৭͕มΘΔ ▸ ԻΛॏͶͯ໐Β࣌͢͸ؾΛ͚ͭΑ͏

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ • ϑΟϧλ/ΤϑΣΫτʹΑΔ੍ޚ • ScriptʹΑΔ੍ޚ

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ • ϑΟϧλ/ΤϑΣΫτʹΑΔ੍ޚ • ScriptʹΑΔ੍ޚ

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ ▸ UnityͰ࢖༻ՄೳͳϑΟϧλ ▸ LowPassFilter  ߴԻҬΛΧοτɻ  ήʔϜͷϙʔζதͳͲʹ࢖༻͞ΕΔ͜ͱ͕ଟ͍ ▸ HighPassFilter  ௿ԻҬΛΧοτɻ  LPFͱ૊Έ߹ΘͤͯBandPassFilterͱͯ͠ར༻΋  BPFͳΒதҬͷΈ௨աͰϥδΦͬΆ͍ԋग़΋ [༻ޠઆ໌] ΧοτΦϑप೾਺fc ɿ ύϫʔ͕6dB ௿Լ͢Δ఺ͷप೾਺ Q஋:      ɹQ஋͕ߴ͍ͱϑϥοτͳ෦෼͕ଟ͍  ɹ௿͍ͱ࠷ॳ͔ΒΏͬͨΓͱ௿Լ͢Δ(LPF) ڞৼप೾਺ όϯυ෯ ʰԻڹֶೖ໳ʱΑΓҾ༻

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ ▸ AudioMixerΛ࢖ͬͯͷදݱ ▸ LowPassEffect  ▸ HighPassEffect  ▸ FadeIn/FadeOut  SnapShotͷ੾Γସ͑ʹΑΓࣗಈͰϑΣʔυ͕͔͔Δ ▸ μοΩϯά  ϘΫγϯάͷ͔͕Ήಈ࡞͔Βདྷ͍ͯΔ༻ޠ  ଞͷԻ͕໐Δͱ͖ʹࣗ਎ʢେ఍͸BGMʣͷԻྔΛԼ͛໐ΓऴΘΔͱಉ࣌ʹԻྔΛݩʹ໭͢ԋग़  ▸ αΠυνΣʔϯೖྗʹΑΔμοΩϯά  ଞͷԻ(ϕʔεԻ, υϥϜͷΩοΫԻͳͲ)ͷେ͖͞ʹ࿈ಈͯ͠ಈతʹԻྔΛมԽͤ͞Δํ๏ 

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ • ϑΟϧλʹΑΔ੍ޚ • ScriptʹΑΔ੍ޚ

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ ▸ ScriptʹΑΔ੍ޚ ▸ FadeIn/FadeOut →ίϧʔνϯ ͳΓͰ࣮૷Մೳ ▸ μοΩϯά ▸ Πϯτϩ෇BGM࠶ੜ ▸ ΠϯλϥΫςΟϒϛϡʔδοΫ

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UNITY ্ͰͷԻྔԋग़ ϑΣʔυ࣮૷ͷςΫχοΫ ▸ Scriptࣗମ͸ඇৗʹ୯७ FadeIn/Out ͦΕͧΕಉ͡ίʔυͰදݱՄೳʢStartͱEndͷઃఆ࣍ୈʣ

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UNITY ্ͰͷԻྔԋग़ ϑΣʔυ࣮૷ͷςΫχοΫ ▸ ΫϩεϑΣʔυͷ஫ҙ఺ ▸ ϑΣʔυΧʔϒ͕௚ઢͩͱશମͷԻྔ͕Լ͕Δॠ͕ؒੜ·ΕΔ ▸   ▸ ղܾखஈͱͯ͠͸ɺϑΣʔυΧʔϒͱͯ͠ࡾ֯ؔ਺Λ༻͍Δ

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UNITY ্ͰͷԻྔԋग़ ϑΣʔυ࣮૷ͷςΫχοΫ ▸ ͬ͘͟Γͱͨ͠આ໌ ▸ ೾ͷΤωϧΪʔ͸ઈର஋ͷ2৐ ▸ A(t), B(t) ʹ t, 1-t Λ୅ೖ ▸ ৴߸S1 (t), S2 (t) ͷΤωϧΪʔΛҰఆͱԾఆ      ▸ 2৐ͨ͠ͱ͖ʹҰఆˠsin2+cos2 ▸ ࡾ֯ؔ਺ͰϑΣʔυΧʔϒΛදݱͯ͋͛͠Ε͹͍͍ ▸ ৄࡉɿhttps://speakerdeck.com/cova8bitdots/unitydeintarakuteibumiyuzitukuyatutemita

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UNITY ্ͰͷԻྔԋग़ Իྔʹؔ͢Δԋग़ྫ ▸ ScriptʹΑΔ੍ޚ ▸ FadeIn/FadeOut →ίϧʔνϯ ͳΓͰ࣮૷Մೳ ▸ μοΩϯά  ԻݯBΛ࠶ੜ͢ΔલʹԻݯAΛFadeͰԻྔམͱ͢ˠԻݯB࠶ੜޙʹԻݯAΛFadeͰݩͷԻྔ΁  ▸ Πϯτϩ෇BGM࠶ੜ  ΠϯτϩͷԻݯͷऴΘΓ͔͚ͱϧʔϓ෦෼ΛΫϩεϑΣʔυͰಉظͤͯ͞࠶ੜ  ▸ ΠϯλϥΫςΟϒϛϡʔδοΫ ▸ ݱࡏͷBGMͷϏʔτʹ߹ΘͤͯΫϩεϑΣʔυΛελʔτͤͯ͋͛͞Δ ▸ ݱࡏͷBGMͷ࠶ੜҐஔΛಉظͯ͠ΫϩεϑΣʔυΛߦ͏

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಺༰ͷ૯෮श ·ͱΊ ▸ Իྔʹ͍ͭͯ ▸ ର਺Λͱͬͯදݱ[dB] ▸ ײ֮ྔʹΑΓͦ͏ͳΒϥ΢υωε  ▸ ԻׂΕ ▸ ԻׂΕ͢ΔͱԻ͕࿪Ή ▸ ഒԻ੒෼ʹΑͬͯԻ৭͕มΘΔ ▸ α΢ϯυԋग़ ▸ FadeΛ੍͢Ε͹৭ʑग़དྷΔ ▸ μοΩϯά ▸ Πϯτϩ෇BGM࠶ੜ ▸ ΠϯλϥΫςΟϒϛϡʔδοΫ

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͓ΘΓʹ એ఻ ▸ ϛυϧ΢ΣΞʹཔΒͳ͍ͰؤுΔα΢ϯυΤϯδϯӶҙ੡࡞த ▸ https://github.com/UnityLibrary/UniSound  ▸ ػೳ ▸ Πϯτϩ෇͖BGM࠶ੜ ▸ FadeIn/FadeOut/ CrossFade ▸ ΠϕϯτͷϏʔτಉظ ▸ Մมςϯϙ৘ใઃఆ ▸ ಉ࣌ൃԻ੍ޚ ▸ ൃԻ਺੍໿ ▸ ൃԻͷΠϯλʔόϧ੍໿ ▸ ઌண/ޙண༏ઌઃఆ ▸ etc.