change output labeling and add timestamped output filenames

app.py

@@ -3,6 +3,7 @@ from audiotools import AudioSignal
 from audioldm import build_model, text_to_audio
 import gradio as gr
 import soundfile as sf
+from datetime import datetime
 
 audioldm = build_model(model_name="audioldm-m-full")
 
@@ -18,9 +19,11 @@ def process_fn(input_audio_path, seed, guidance_scale, num_inference_steps, num_
         ddim_steps = int(num_inference_steps)
         )
     
-    sf.write("./output.wav", waveform[0, 0], samplerate=16000)
+    timestamp = datetime.now().strftime("%Y%m%d%H%M%S")
+    filename = f"./ldm_variations_{timestamp}.wav"
+    sf.write(filename, waveform[0, 0], samplerate=16000)
     #save_wave(waveform, "./", name="output.wav")
-    return "./output.wav"
+    return filename
 
 
 card = ModelCard(
@@ -66,10 +69,10 @@ with gr.Blocks() as webapp:
         ),
     ]
 
-    output = gr.Audio(label="Audio Output", type="filepath")
+    output = gr.Audio(label="Audio Output", type="filepath", format="wav", elem_id="audio")
 
     ctrls_data, ctrls_button, process_button, cancel_button = build_endpoint(inputs, output, process_fn, card)
 
 # queue the webapp: https://www.gradio.app/guides/setting-up-a-demo-for-maximum-performance
-#webapp.queue()
+webapp.queue()
 webapp.launch(share=True)