fix: add waveform options with sample rate to microphone input for improved audio visualization

app.py

@@ -206,7 +206,10 @@ with gr.Blocks(title="Real-time Speech-to-Text with NeMo") as demo:
                         sources=["microphone"], 
                         type="numpy", 
                         streaming=True,
-                        label="Speak into your microphone"
+                        label="Speak into your microphone",
+                        waveform_options=gr.WaveformOptions(
+                            sample_rate=16000
+                        )
                     )
                     
                 clear_btn = gr.Button("Clear Transcript", variant="secondary")