# Voices

Spoof the voices used in the browser's Web Speech API.

Property	Type	Description	Example
`voices`	array	An array of maps for each voice. Each map must contain the keys `isLocalService`, `isDefault`, `voiceUri`, `name`, and `lang`.	[ { "isLocalService": true, "isDefault": true, "voiceUri": "Ting-Ting", "name": "Ting-Ting", "lang": "zh-CN" }, ... ]
`voices:blockIfNotDefined`	bool	Whether to block system voices. Default is `false`.	`true`
`voices:fakeCompletion`	bool	Return a successful TTS completion when a fake voice is used. If disabled, an error is thrown instead (default in RFP). Default is `false`.	`true`
`voices:fakeCompletion:charsPerSecond`	double	Playback rate of a fake voice in characters per second. Default is `12.5`, which is ~150wpm.	`15.0`

Using voices:fakeCompletion is not fully implemented. It can be hypothetically detectable if a website measures the utterance duration and compares it with the elapsed time taken. However, anti-bots will never play TTS to detect you.