Properties of a SynthesizeSpeechConfig.
Properties:
| Name | Type | Attributes | Description | 
|---|---|---|---|
| speakingRate | number | null | <optional> | SynthesizeSpeechConfig speakingRate | 
| pitch | number | null | <optional> | SynthesizeSpeechConfig pitch | 
| volumeGainDb | number | null | <optional> | SynthesizeSpeechConfig volumeGainDb | 
| effectsProfileId | Array.<string> | null | <optional> | SynthesizeSpeechConfig effectsProfileId | 
| voice | google.cloud.dialogflow.cx.v3beta1.IVoiceSelectionParams | null | <optional> | SynthesizeSpeechConfig voice |