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51 lines
1.8 KiB
Markdown
51 lines
1.8 KiB
Markdown
# Mary Text-to-Speech
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The Mary Text-to-Speech (TTS) service is a pure Java implementation of a TTS service, which uses the [MaryTTS](http://mary.dfki.de/) project of DFKI.
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While it provides good quality results, it must be noted that it is too heavy-weight for most embedded hardware like a Raspberry Pi. When using this service, you should be running openHAB on some real server instead.
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## Configuration
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There is no need to configure anything for this service.
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## Voices
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MaryTTS comes with three packages voices, one for American English, two for German:
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```
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> voice voices
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marytts:cmuslthsmm cmu-slt-hsmm (en_US)
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marytts:bits3hsmm bits3-hsmm (de)
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marytts:bits1hsmm bits1-hsmm (de)
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```
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### Default Text-to-Speech and Voice Configuration
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You can setup your preferred default Text-to-Speech and default voice in the UI:
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* Go to **Settings**.
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* Edit **System Services - Voice**.
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* Set **MaryTTS** as **Default Text-to-Speech**.
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* Choose your preferred **Default Voice** for your setup.
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In case you would like to setup these settings via a text file, you can edit the file `runtime.cfg` in `$OPENHAB_ROOT/conf/services` and set the following entries:
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```
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org.openhab.voice:defaultTTS=marytts
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org.openhab.voice:defaultVoice=marytts:cmuslthsmm
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```
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## Supported Audio Formats
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The MaryTTS service produces audio streams using WAV containers and PCM (signed) codec with 16bit depth.
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The sample frequency depends on the chosen voice and ranges from 16kHz to 48kHz.
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## Log files
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The log messages of Mary TTS are not bundled with the openHAB log messages in the `openhab.log` file of your log directory but are stored in their own log file at `server.log` of your log directory.
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## Caching
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The MaryTTS service uses the openHAB TTS cache to cache audio files produced from the most recent queries in order to reduce traffic, improve performance and reduce number of requests.
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