在javascript中将音频Float32转换为Int16

const audioContext = new AudioContext();

const buffer = audioContext.createBuffer(1, float32Array.length, audioContext.sampleRate);

const channelData = buffer.getChannelData(0);

channelData.set(float32Array);

const sourceNode = audioContext.createBufferSource();
sourceNode.buffer = buffer;

const scriptProcessorNode = audioContext.createScriptProcessor(int16Array.length, 1, 1);

scriptProcessorNode.onaudioprocess = function(event) {
  const inputBuffer = event.inputBuffer;
  const outputBuffer = event.outputBuffer;
  
  for (let channel = 0; channel < outputBuffer.numberOfChannels; channel++) {
    const inputData = inputBuffer.getChannelData(channel);
    const outputData = outputBuffer.getChannelData(channel);
    
    for (let i = 0; i < inputBuffer.length; i++) {
      const float32Value = inputData[i];
      const int16Value = Math.max(-1, Math.min(1, float32Value)) * 0x7FFF;
      outputData[i] = int16Value / 0x8000;
    }
  }
};

sourceNode.connect(scriptProcessorNode);
scriptProcessorNode.connect(audioContext.destination);

sourceNode.start();