Update main.ts

main.ts

@@ -191,8 +191,8 @@ async function handleDemoRequest(req: Request) {
 
     document.getElementById('synthesizeButton').addEventListener('click', () => {
         const text = document.getElementById('inputText').value || 'Hello world';
-        const rate = document.getElementById('rate').value || '-0.1';
-        const pitch = document.getElementById('pitch').value || '0.1';
+        const rate = document.getElementById('rate').value || '0.0';
+        const pitch = document.getElementById('pitch').value || '0.0';
         const voice = \`rate:\${rate}|pitch:\${pitch}\`;
         const model = document.getElementById('voiceSelect').value;