I’ve heard of people using voice modulation and sound boards. But most of the time, I hear they use it, and stop pretty quickly. Often, the quality isn’t great, and it’s difficult or impossible to understand what people are saying, so you end up having to repeat it in your own voice anyway. So I’d really urge caution before I invested in something like this.

And I also don’t know how it could work as a sound board. Seems unlikely they could emphasize words as opposed to just saying each one neutrally.