ttsOptions
Options for Text-to-speech usage. See the details in the official specs.
Note that if you specify at least one of these options, Voxengine automatically adds the <speak>...</speak> tags to either end of a passed string. If you want to use other SSML tags, specify the <speak>...</speak> tags manually.
Properties
pitch
pitch: String
Voice pitch. Acceptable ranges are: 1) the numbers followed by "Hz" from 0.5Hz to 2Hz 2) x-low, low, medium, high, x-high, default
rate
rate: String
Speech speed. Possible values are: x-slow, slow, medium, fast, x-fast, default.
volume
volume: String
Speech volume. Possible values are: silent, x-soft, soft, medium, loud, x-loud, default.