app.py

import gradio as gr
from gtts import gTTS
from pydub import AudioSegment
import numpy as np
import os

def text_to_speech(prompt):
    try:
        # gTTS를 이용해 Bulgarian 텍스트를 음성으로 변환
        tts = gTTS(text=prompt, lang="bg")
        audio_file = "output.mp3"
        tts.save(audio_file)
    except Exception as e:
        return f"TTS 생성 오류: {e}"

    try:
        # pydub으로 mp3 파일 불러오기
        sound = AudioSegment.from_mp3(audio_file)
        
        # pydub가 제공하는 raw 데이터를 NumPy 배열로 변환 (int16)
        samples = np.array(sound.get_array_of_samples())
        
        # 만약 스테레오라면 모노로 변환 (채널 평균)
        if sound.channels > 1:
            samples = samples.reshape((-1, sound.channels))
            samples = samples.mean(axis=1)
        
        # int16 데이터를 float32로 정규화 (범위: [-1.0, 1.0])
        samples = samples.astype(np.float32) / 32768.0
        sample_rate = sound.frame_rate
    except Exception as e:
        return f"오디오 처리 오류: {e}"
    finally:
        if os.path.exists(audio_file):
            os.remove(audio_file)
    
    return samples, sample_rate

with gr.Blocks() as demo:
    gr.Markdown("## Bulgarian Text-to-Speech (TTS)")
    input_prompt = gr.Textbox(label="Enter a prompt in Bulgarian:")
    output_audio = gr.Audio(label="Generated Speech", type="numpy")
    generate_button = gr.Button("Generate Speech")
    
    generate_button.click(text_to_speech, inputs=input_prompt, outputs=output_audio)

demo.launch()