Are you looking to in dual-audio from AnimePahe, or are you trying to create/install an AI voicepack for long narration?
AnimePahe is optimized for mobile users and those with low storage or slow internet. Because of this, the audio is often encoded in mono or lower bitrates to keep file sizes small. PAHE voicepack
Some VTubers release "long-form" voice packs that can exceed 30-40 minutes of talking or ASMR-style content. Are you looking to in dual-audio from AnimePahe,
Navigation apps like Waze use custom voicepacks (celebrities like Morgan Freeman or Arnold Schwarzenegger) to provide turn-by-turn directions. Installation & Issues PAHE voicepack