Created
September 25, 2024 07:27
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wavesurfer stereo panner
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import WaveSurfer from 'wavesurfer.js' | |
const wavesurfer = WaveSurfer.create({ | |
container: document.body, | |
waveColor: 'rgb(200, 0, 200)', | |
progressColor: 'rgb(100, 0, 100)', | |
url: '/examples/audio/stereo.mp3', | |
mediaControls: true, | |
}) | |
// Create Web Audio context and a panner | |
const audioContext = new AudioContext() | |
const panner = audioContext.createStereoPanner() | |
panner.connect(audioContext.destination) | |
wavesurfer.on('ready', () => { | |
// Create a MediaElementSourceNode from the audio element | |
const audioEl = wavesurfer.getMediaElement() | |
const mediaNode = audioContext.createMediaElementSource(audioEl) | |
mediaNode.connect(panner) | |
}) | |
/* | |
<html> | |
<label> | |
L <input type="range" min="-1" max="1" value="0" step="0.1" id="slider" /> R | |
</label> | |
</html> | |
*/ | |
// Create a vertical slider for each band | |
const slider = document.querySelector('#slider') | |
slider.oninput = (e) => { | |
panNode.pan.setValueAtTime(panControl.value, audioContext.currentTime) | |
} |
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