app.py

import gradio as gr
import torch
import torchaudio
import tempfile

import numpy as np
from nemo.collections.tts.models import FastPitchModel
from nemo.collections.tts.models import HifiGanModel
from nemo.collections.tts.models import MixerTTSModel

# spec_generator_2 = MixerTTSModel.from_pretrained("tts_en_lj_mixerttsx")
# model1 = HifiGanModel.from_pretrained(model_name="tts_en_lj_hifigan_ft_mixerttsx")

spec_generator = FastPitchModel.from_pretrained("tts_en_fastpitch_multispeaker")
spec_generator.eval()
voc_model = HifiGanModel.from_pretrained(model_name="tts_en_hifitts_hifigan_ft_fastpitch")
voc_model.eval()

def greet(name):
    return "Hello " + name + "!!"

def generate_tts(text: str, speaker: int = 0):
    sr = 44100
    parsed = spec_generator.parse(text)
    spectrogram = spec_generator.generate_spectrogram(tokens=parsed, speaker=speaker)
    audio = voc_model.convert_spectrogram_to_audio(spec=spectrogram)

    with tempfile.NamedTemporaryFile(suffix=".wav", delete=False) as fp:
        torchaudio.save(fp.name, audio.to('cpu'), sample_rate=sr)

        return fp.name
    #return (sr, audio.to('cpu').detach().numpy())

def run():
    demo = gr.Interface(
        fn=generate_tts,
        inputs=[gr.Textbox(value="This is a test.", label="Text to Synthesize"),
                gr.Slider(0, 10, step=1, label="Speaker")],
        outputs=gr.Audio(label="Output", type="filepath"),
    )

    demo.launch(server_name="0.0.0.0", server_port=7860)


if __name__ == "__main__":
    run()