app.py

import gradio as gr
import subprocess
import piper

def synthesize_speech(text):
    # Command to execute Piper-TTS CLI
    command = ['piper-tts-cli', '--text', text, '--output', 'output.wav']
    subprocess.run(command, capture_output=True)

    if os.path.exists('output.wav'):
        return 'output.wav'
    else:
        return None

iface = gr.Interface(
    fn=synthesize_speech,
    inputs='text',
    outputs='audio'
)

iface.launch()