32 lines
785 B
TypeScript
32 lines
785 B
TypeScript
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/**
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* Reverse audio effect
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*/
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import { getAudioContext } from '../context';
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/**
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* Reverse audio buffer
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* @param buffer - Source audio buffer
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* @returns New audio buffer with reversed audio
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*/
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export function reverseAudio(buffer: AudioBuffer): AudioBuffer {
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const audioContext = getAudioContext();
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const outputBuffer = audioContext.createBuffer(
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buffer.numberOfChannels,
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buffer.length,
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buffer.sampleRate
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);
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// Reverse each channel
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for (let channel = 0; channel < buffer.numberOfChannels; channel++) {
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const inputData = buffer.getChannelData(channel);
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const outputData = outputBuffer.getChannelData(channel);
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for (let i = 0; i < buffer.length; i++) {
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outputData[i] = inputData[buffer.length - 1 - i];
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}
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}
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return outputBuffer;
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}
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