app.py

import gradio as gr
import nemo.collections.asr as nemo_asr
from pydub import AudioSegment
import pyaudioconvert as pac


hf_model = nemo_asr.models.EncDecRNNTBPEModel.from_pretrained(
                model_name="mbazaNLP/Kinyarwanda_nemo_stt_conformer_model")

def convert (audio):
  file_name = audio.name
  if file_name.endswith("mp3") or file_name.endswith("wav") or file_name.endswith("ogg"):
    if file_name.endswith("mp3"):
      sound = AudioSegment.from_mp3(audio.name)
      sound.export(audio.name, format="wav")
    elif file_name.endswith("ogg"):
      sound = AudioSegment.from_ogg(audio.name)
      sound.export(audio.name, format="wav")
  else:
    return False
  pac.convert_wav_to_16bit_mono(audio.name,audio.name)
  return True

def transcribe(audio, audio_microphone):
  audio = audio_microphone if audio_microphone else audio
  if convert(audio)== False:
    return "The format must be mp3,wav and ogg"
  result= hf_model.transcribe([audio.name])
  return result[0]
gradio_ui = gr.Interface(
    fn=transcribe,
    title="Kinyarwanda Speech Recognition",
    description="Upload an audio clip or record from browser using microphone, and let AI do the hard work of transcribing.",
    inputs=[gr.inputs.Audio(label="Upload Audio File", type="file", optional=True), gr.inputs.Audio(source="microphone", type="file", optional=True, label="Record from microphone")],
    outputs=[gr.outputs.Textbox(label="Recognized speech")]
)
gradio_ui.launch(enable_queue=True)