how t produce 12 pulse wave in javascript

index.tsx
const audioContext = new AudioContext();
const bufferSize = 4096;
const numberOfPulses = 12;
let currentSample = 0;

// Create a ScriptProcessorNode
const scriptNode = audioContext.createScriptProcessor(bufferSize, 0, 1);

// Set the onaudioprocess callback function
scriptNode.onaudioprocess = (audioProcessingEvent) => {
  const outputBuffer = audioProcessingEvent.outputBuffer;
  const outputData = outputBuffer.getChannelData(0);

  // Generate pulse waveform
  for (let i = 0; i < outputBuffer.length; i++) {
    const t = currentSample / audioContext.sampleRate;
    const x = Math.sin((2 * Math.PI * numberOfPulses * t)) > 0 ? 1.0 : -1.0;
    outputData[i] = x;
    currentSample++
  }
};

// Connect the ScriptProcessorNode to the AudioContext destination
scriptNode.connect(audioContext.destination);
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