Voice clone training script formatter
A cloned voice can only say sounds it learned during training. If your script never includes certain phonemes, sentence lengths, or intonation patterns, the model improvises them — and that is where mispronunciations come from. This formatter audits your training script for phonetic diversity, length variety, and intonation mix, then estimates recording duration for ElevenLabs, Resemble, and Coqui.
How it works
The tool runs several lightweight checks on your text:
- Phoneme coverage — it maps your words against a set of representative English sound groups (plosives, fricatives, nasals, key vowels) and reports which groups are thin or missing.
- Sentence-length spread — it measures short, medium, and long sentences so you do not train on one monotonous cadence.
- Intonation mix — it counts statements, questions, and exclamations, since rising and falling pitch must be in the data to be reproduced.
- Duration estimate — at a normal reading pace it projects how many minutes your script will yield and compares that to your target.
Tips for a strong training script
- Vary everything. Mix sentence lengths, sentence types, and topics — variety in the data is what makes a clone flexible.
- Read naturally. Train the voice the way you want it to sound; don’t over-enunciate or perform unless that is the target style.
- Prioritize clean audio. A quiet room and consistent mic distance matter more than a perfect script.
- Fill the gaps it flags. If a phoneme group is thin, add one or two sentences that exercise it rather than padding length blindly.