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JavaScript, JavaScript… Rocks You!
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Vitalii Bobrov Lead JS Engineer @ EPAM @AngularWroclaw organizer Loves rock music @bobrov1989 https://bobrov.dev
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Wroclaw, Poland
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Web Audio
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a uni-directed graph containing audio nodes https://developer.mozilla.org/en-US/docs/Web/API/Web_Audio_API/Using_Web_Audio_API
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Uni-directed Graph input output effects
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Guitar Stack input output
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Guitar Stack input output effects
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Connect a Guitar
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Stream Source https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamAudioSourceNode
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Media Stream Constraints https://developer.mozilla.org/en-US/docs/Web/API/MediaStreamConstraints/audio
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Connect to Destination https://developer.mozilla.org/en-US/docs/Web/API/AudioDestinationNode
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Volume Control
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Gain Control sin(x) 0.5sin(x)
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Gain Node https://developer.mozilla.org/en-US/docs/Web/API/GainNode
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Distortion
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group of effects shaping a sound wave
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Overdrive Distortion Fuzz Effects
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Wave Shape sin(x) (PI + k) * x / (PI + k * abs(x))
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Distortion vs Overdrive vs Fuzz
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Wave Shaper Node https://developer.mozilla.org/en-US/docs/Web/API/WaveShaperNode
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Tone Control
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Low Pass Filter
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Biquad Filter Node https://developer.mozilla.org/en-US/docs/Web/API/BiquadFilterNode
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Cabinet
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Impulse Response a short sample with impulse characteristics record
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Convolver Node https://developer.mozilla.org/en-US/docs/Web/API/ConvolverNode
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Equalizer
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Three Band Equalizer Bass < 500 Hz Middle ~1500 Hz Treble > 3000 Hz
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Biquad Filter Nodes https://developer.mozilla.org/en-US/docs/Web/API/BiquadFilterNode
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Reverb
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Reverb Graph Channel Splitter Node Channel Merger Node “Dry” Gain Node “Wet” Gain Node Delay Node Biquad Filter Node Convolver Node
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Reverb Nodes https://developer.mozilla.org/en-US/docs/Web/API/ChannelSplitterNode https://developer.mozilla.org/en-US/docs/Web/API/DelayNode
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Connect Nodes https://developer.mozilla.org/en-US/docs/Web/API/ChannelMergerNode
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Connect line to destination Gain Node Distortion Wave Shaper Node Biquad Filter Node Cabinet Convolver Node Reverb Channel Merger/Splitter Node Delay Node Recap
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Rock it!
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@bobrov1989 https://bobrov.dev https://github.com/vitaliy-bobrov/js-rocks