TTWT "Inflection"

When using TTWT, it automatically adds a pitch “inflection” to what I type rather than holding a static note throughout the word.
For instance, the word “way” starts out on one note ay “W” but drops at least 3 pitches by the time it reaches the “Y”.
How do I suppress this tendency to “humanize” the speech? I want “ROBOTIC” speech otherwise I’d just say it myself.
Thank you for any helpful suggestions.