Long sentences are where many TTS drafts fall apart. I usually split any line that asks the listener to hold two or three ideas in memory at once.
Long sentences increase listener load
A long sentence can be grammatically correct but difficult to follow in audio. Listeners need the idea to unfold in manageable pieces.
Short does not mean simplistic
Good TTS writing can still sound professional. The goal is to separate ideas clearly so the voice engine can phrase them well.
Edit by listening
If a sentence sounds breathless or confusing, split it. Listening is often the fastest way to find structure problems.
Before you publish
- Aim for one main idea per sentence
- Split lists into bullets before conversion
- Listen for breathless phrasing
- Rewrite dense clauses
Multilingual quick notes
Chinese: 句子长度会影响听者理解和 AI 断句，短句通常更适合语音输出。
Japanese: 文の長さは聞きやすさと音声の区切りに影響し、短めの文が有効です。
Korean: 문장 길이는 청취 이해와 AI 음성의 끊어 읽기에 영향을 주며 짧은 문장이 더 효과적입니다.
A simple way to try it
Start with one short paragraph from your own project. If the sample sounds clear, keep that version of the script and then record the full MP3. It is much easier to fix one paragraph early than repair a long file at the end.