AI & Agents
Stack Exchange · 2025-12-09
German TTS trips even OpenAI: numbers, currency and ordinals need pre-processing
德语 TTS 连大厂都读错：数字、货币、序数词需要预处理
At a glance · 30-second read
- WhoStack Exchange · 2025-12-09 · 2 upvotes
- The askGerman TTS trips even OpenAI: numbers, currency and ordinals need pre-processing
- The openingA text-normalization library/service that rewrites numbers, abbreviations and units into readable form per language. Open-source core, paid API.
What was actually said
“Converting German text to speech, even OpenAI and ElevenLabs make lots of mistakes — '74000€' and '1.' come out garbled, so users hand-rewrite the text.”
— Stack Exchange · 2025-12-09 · softwarerecs.stackexchange.com/questions/94991/softw…
Background and pain
The pain
Number/currency/ordinal rules are messy and vendors' normalization is weak; German content creators proofread audio line by line.
A buildable angle
The opening
A text-normalization library/service that rewrites numbers, abbreviations and units into readable form per language. Open-source core, paid API.
How to validate it
- Read the whole thread and note the recurring scenarios — repetition is the density of the need.
- Search existing tools around "tts / text normalization" and check which single step they actually cover.
- Put up a one-line landing page, share it back to Stack Exchange, and see whether anyone asks about pricing.
Existing options
各 TTS 自带归一化手工预改
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