app.py

import nemo.collections.asr as nemo_asr
import gradio as gr
import pandas as pd 
from pydub import AudioSegment 
import os 

asr_model = nemo_asr.models.EncDecCTCModelBPE.from_pretrained(model_name="stt_rw_conformer_ctc_large")
df = pd.read_csv("amasaku_data.tsv",sep='\t')

amasaku_mapping = {str(key).lower():str(val).lower() for key,val in zip(df.iloc[:,0],df.iloc[:,1])}

def transcribe(file):

    #if not audio:
    #    return {state_var: state, transcription_var: state} 
    
    #print("filename: ",file)
    # print("microphone: ",microphone)
    # print("uploaded file: ",file)
    # if microphone:
    #     file_name = file
    # elif file:
    #     file_name = file 
    if file:
        file_name = file
    
    if not file_name:
        return "No audio file provided."

    try:
        audio = AudioSegment.from_file(file_name)
        if audio.frame_rate != 16000:
            audio = audio.set_frame_rate(16000)
        if audio.channels != 1:
            audio = audio.set_channels(1)
        audio.export(file_name.split(".")[0]+".wav",format="wav")
    except Exception as e:
        print(e)
    transcription= asr_model.transcribe([file])
    transcription = transcription[0].lower().split()
    transcribed_with_amasaku = []
    for word in transcription:
        transcribed_with_amasaku.append(amasaku_mapping.get(word,word))
    transcribed_with_amasaku = " ".join(transcribed_with_amasaku)
    return  transcribed_with_amasaku.capitalize()


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

    with gr.Row():
        with gr.Column():
            microphone = gr.Audio(sources="microphone", type="filepath", label="Microphone")
            # print("microphone source: ",microphone)
            # print(os.listdir("/tmp"))
            uploaded_audio = gr.Audio(label="Upload Audio File", type="filepath",sources="upload")
            print('upload path: ',uploaded_audio)
        with gr.Column():
            transcription = gr.Textbox(type="text", label="Transcription")
    with gr.Row():
      transcribe_button = gr.Button("Transcribe")
    
    def handle_audio(microphone, uploaded_audio):
        if microphone:
            return transcribe(microphone)
        elif uploaded_audio:
            return transcribe(uploaded_audio)
        else:
            return "No audio file provided."

    transcribe_button.click(
        handle_audio,
        [microphone, uploaded_audio],
        transcription
    )

  
demo.launch()