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To save pyttsx3 TTS to a buffer, you can use the BytesIO module from Python's io library. Here's an example code snippet:
import pyttsx3
from io import BytesIO
# Initialize pyttsx3 engine
engine = pyttsx3.init()
# Create BytesIO buffer
buffer = BytesIO()
# Set TTS output to buffer
engine.setProperty('voice', 'english')
engine.say('Hello, world!')
engine.runAndWait()
engine.save_to_buffer(buffer)
# Retrieve TTS output from buffer as bytes
tts_bytes = buffer.getvalue()
In the code above, we initialize the pyttsx3 engine, create a BytesIO buffer, set the TTS output to the buffer using the save_to_buffer method, and retrieve the TTS output from the buffer as bytes using the getvalue method. You can modify the TTS output by changing the engine settings and passing a different text to the say method.