iOS: AVSpeechSynthesizer - supports offline?

Question

I am using AVSpeechSynthesizer for TTS functinality. I want to know whether AVSpeechSynthesizer supports offline.

I tried few texts in few languages, It supports offline. I want to sure it supports offline for all languages or not.

Does AVSpeechSynthesizer support offline for all the supported language?

If you are already using it, can't you turn airplane mode an test it? — Fabio Berger, Aug 07 '17 at 13:06
@FabioBerger, I tried. It supports offline . But i want to make sure it supports offline for all languages — Sridhar, Aug 07 '17 at 13:11
According to [Use Your Loaf](https://useyourloaf.com/blog/synthesized-speech-from-text/), which also provides a nice class diagram, **it is offline in all languages**. — Tamás Sengel, Aug 07 '17 at 13:32
@the4kman, Are you sure? Does apple mention this in developer.apple.com — Sridhar, Aug 08 '17 at 11:01

score 2 · Accepted Answer · answered Aug 17 '17 at 00:16

Yes, using the AVSpeechSynthesizer API will allow you to support offline TTS functionality.

The languages that are supported are listed below as of iOS 8.1:

Arabic (ar-SA)

Chinese (zh-CN, zh-HK, zh-TW)

Czech (cs-CZ)

Danish (da-DK)

Dutch (nl-BE, nl-NL)

English (en-AU, en-GB, en-IE, en-US, en-ZA)

Finnish (fi-FI)

French (fr-CA, fr-FR)

German (de-DE)

Greek (el-GR)

Hebrew (he-IL)

Hindi (hi-IN)

Hungarian (hu-HU)

Indonesian (id-ID)

Italian (it-IT)

Japanese (ja-JP)

Korean (ko-KR)

Norwegian (no-NO)

Polish (pl-PL)

Portuguese (pt-BR, pt-PT)

Romanian (ro-RO)

Russian (ru-RU)

Slovak (sk-SK)

Spanish (es-ES, es-MX)

Swedish (sv-SE)

Thai (th-TH)

Turkish (tr-TR)

1 Answers1