diff --git a/src/App.tsx b/src/App.tsx
index eb0ae67..c0d7106 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -31,11 +31,11 @@ const onDownload = () => {
   }
 
   const data = getMergedPCMData(buffers);
-  const blob = new Blob([data.buffer], { type: 'audio/wave' });
+  const blob = new Blob([floatTo16BitPCM(data)], { type: 'audio/wave' });
 
   const a = document.createElement('a');
   a.href = URL.createObjectURL(blob);
-  a.download = 'merged_audio.wav';
+  a.download = 'merged_audio.pcm';
   a.click();
 };