Update app.py

app.py

@@ -1,6 +1,5 @@
-import gradio as gr
 import os
-from pathlib import Path
+import gradio as gr
 from midi_ddsp.midi_ddsp_synthesize import load_pretrained_model
 from midi_ddsp.utils.midi_synthesis_utils import synthesize_mono_midi
 from midi_ddsp.data_handling.instrument_name_utils import INST_NAME_TO_ID_DICT, INST_NAME_LIST
@@ -11,13 +10,12 @@ synthesis_generator, expression_generator = load_pretrained_model()
 def midi_ddsp_synth(instrument, midi_file):
     '''
     Paras:
-    midi_file: the directory of the midi file
-    instrument: instrument type, choose from 'violin', 'viola', 'cello', 'double bass',
+        midi_file: the directory of the midi file
+        instrument: instrument type, choose from 'violin', 'viola', 'cello', 'double bass',
                                             'flute', 'oboe', 'clarinet', 'saxophone',
                                             'bassoon', 'trumpet', 'horn', 'trombone', 'tuba'                                            
     Returns:
-    fs: the sampling rate
-    x: the audio data
+        output_file_path: path of the output wav file
     '''
     if not (os.path.isfile(midi_file.name) and midi_file.name[-4:] == '.mid'):
         raise FileNotFoundError('Error: not a valid midi file')
@@ -36,7 +34,7 @@ gr.Interface(
     fn = midi_ddsp_synth,
     inputs = [
         gr.inputs.Textbox(
-            lines=1, placeholder=None, default='', label='choose instrument from: violin, viola, cello, double bass,\
+            lines=1, placeholder=None, default='', label='Input instrument type, choose from: violin, viola, cello, double bass,\
                                                         flute, oboe, clarinet, saxophone, bassoon, trumpet, horn, trombone, tuba'),
         gr.File(type="file", label="Upload .mid file here")
     ],