Speech.srv

int32   mode
string  string  # Optional, used only when mode == SAY       || SET_LANGUAGE
int32   value   # Optional, used only when mode == SET_SPEED || SET_PITCH

int32 SET_LANGUAGE=1
int32 GET_LANGUAGE=11
int32 SET_SPEED=2
int32 GET_SPEED=22
int32 SET_PITCH=3
int32 GET_PITCH=33
int32 GET_SUPPORTED_LANG=4
int32 SAY=5
int32 RESET=6  # Resets pitch, speed and language to the default values stored in the parameter server
---
bool   success
string response # Optional, used only when mode == GET_LANGUAGE || GET_SUPPORTED_LANG
int32  value    # Optional, used only when mode == GET_SPEED    || GET_PITCH