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# tts.py
import os
from pathlib import Path
import openai
import logging
from gtts import gTTS # Ensure gTTS is installed (pip install gTTS)
# Set OpenAI API key from the environment variable
openai.api_key = os.getenv("api_key_oai")
def text_to_speech(text: str, voice: str = "coral", model: str = "tts-1") -> str:
"""
Convert input text to speech using OpenAI's TTS API.
Falls back to gTTS if the OpenAI API fails.
Returns:
The file path to the generated audio file.
"""
# Generate a unique filename using a hash of the text
output_file = Path(__file__).parent / f"speech_{abs(hash(text))}.pus"
try:
response = openai.Audio.speech.create(
model=model,
voice=voice,
input=text,
)
response.stream_to_file(str(output_file))
logging.info("OpenAI TTS succeeded.")
return str(output_file)
except Exception as e:
logging.error("OpenAI TTS failed, falling back to gTTS. Error: %s", e)
return text_to_speech_gtts(text)
def text_to_speech_gtts(text: str) -> str:
"""
Convert input text to speech using gTTS.
Returns:
The file path to the generated audio file.
"""
output_file = Path(__file__).parent / f"speech_{abs(hash(text))}.mp3"
try:
tts = gTTS(text=text, lang='en')
tts.save(str(output_file))
logging.info("gTTS succeeded.")
return str(output_file)
except Exception as e:
logging.error("gTTS failed. Error: %s", e)
raise
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