speech.html

<button id="speak">Speak</button>

<script>
  const button = document.getElementById("speak");

  button.addEventListener("click", () => {
    const utterance = new SpeechSynthesisUtterance(
      "Hello, this is the HTML5 Speech Synthesis API."
    );

    utterance.rate = 1;
    utterance.pitch = 1;
    utterance.volume = 1;

    speechSynthesis.speak(utterance);
  });
</script>