"AudioPreprocessingConfig" is not defined

[aE8x]

Bug Description

Enhanced audio processing, and everything involving AudioPreprocessingConfig are unavailble because the program does not recognize it, even if TTSRequest and TTS are imported.

Minimal Reproducible Example

request = TTSRequest(
    text="Hello world!",
    speaker_files=["speaker.wav"]
)

# Enhanced audio processing
request = TTSRequest(
    text="Pristine audio quality",
    speaker_files=["speaker.wav"],
    audio_config=AudioPreprocessingConfig(
        normalize=True,
        trim_silence=True,
        enhance_speech=True,
        enhance_amount=1.5
    )
)

# Language-specific request
request = TTSRequest(
    text="Bonjour le monde!",
    speaker_files=["speaker.wav"],
    language="fr"
)

# Streaming configuration
request = TTSRequest(
    text="Very long text...",
    speaker_files=["speaker.wav"],
    stream=True,
)

# Generation parameters
request = TTSRequest(
    text="Creative variations",
    speaker_files=["speaker.wav"],
    temperature=0.8,
    top_p=0.9,
    top_k=50
)