Control the length of AUDIOs generated????

[AIhasArrived]

I am looking for any tool you can think of.
I was wondering Is there a way to make the audio generated take the exact amount of time you desire? So when I write for instance a sentence of 5 words, I could control whether the ai reader makes it in 5, 6 or 7 seconds? This is important.

Anyone with an idea if this is possible or any other method to circumvent this or control it???