Why Kitten TTS for Audiobooks?

  • Natural pacing: Speed=0.9 for comfortable listening
  • Consistent voice: Same narrator across hundreds of pages
  • Zero fatigue: AI never gets tired, voice stays consistent
  • Cost-effective: Free vs $200-400 per finished hour for human narrators

Chapter-by-Chapter Script

from kittentts import KittenTTS
import os

model = KittenTTS("KittenML/kitten-tts-mini-0.8")

# Organize chapters as text files
chapters_dir = "book_chapters"
os.makedirs("audiobook_output", exist_ok=True)

for i in range(1, 21):  # 20 chapters
    chapter_file = os.path.join(chapters_dir, "chapter_%d.txt" % i)
    if os.path.exists(chapter_file):
        with open(chapter_file, "r") as f:
            text = f.read()
        output = "audiobook_output/chapter_%d.wav" % i
        model.generate_to_file(text, output, voice="Bella", speed=0.9)
        print("Narrated chapter %d" % i)

print("Audiobook complete!")

Best Narration Voices

Book GenreVoiceSpeed
Fiction / NovelsBella0.9 (natural storytelling)
Non-Fiction / BusinessBruno0.95 (clear, authoritative)
Self-Help / Personal GrowthJasper0.95 (warm, relatable)
Children BooksRosie / Kiki0.85 (slower, animated)