app.py

import nemo.collections.asr as nemo_asr
import gradio as gr

asr_model = nemo_asr.models.EncDecCTCModelBPE.from_pretrained(model_name="stt_rw_conformer_ctc_large")

def transcribe(file):

    #if not audio:
    #    return {state_var: state, transcription_var: state} 
    
    print("filename: ",file)
    transcription= asr_model.transcribe([file])
    print(transcription)
    return  transcription[0]


with gr.Blocks() as demo:
   # state_var = gr.State("")

    with gr.Row():
        with gr.Column():
            uploaded_audio = gr.Audio(label="Upload Audio File", type="filepath")

        with gr.Column():
            transcription = gr.Textbox(type="text", label="Transcription")
    with gr.Row():
      transcribe_button = gr.Button("Transcribe")

    transcribe_button.click(
        transcribe,
        [uploaded_audio],
        transcription
    )

  
demo.launch()