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How To Use Prosody Contour In Speech Synthesis

You have exposed most of the prosody features (pitch, emphasis, rate, volume, break, phonemes)  and I am thrilled that they all work perfectly! Thank you. I enjoy using them to vary my robot's voice. Still, there is one feature that is only partially exposed and that is "prosody contour. " When I attempt to use prosody contour, the voice is lowered in pitch, but none of the parameters work. I have tried every possible way to get this working, but my parameter changes are ignored. Would you please implement this? 

Reference for SSML - Contour

Saywait("_angle bracket_ prosody contour='(0%,+20Hz) (10%,+30%) (40%,+10Hz)'_angle bracket_ good morning _angle bracket_ /prosody _angle bracket_ ")


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EZ-B V4 by EZ-Robot
EZ-B v4 with Synthiam ARCx controls servos, sensors, camera and audio over Wi-Fi or USB serial, no firmware needed.
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Servos 24
Camera
Audio
UART 3
I2C
ADC 8
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#1   — Edited

Unfortunately,that’s not up to Synthiam arc. The commands you pass are sent directly to the speech engine. There is no parsing done by arc. If it doesn’t work, it’s not supported by the underlying speech engine.

this is being changed to a question and not a feature request.