Is it possible to add different voices? The female one is really grating. 
And she cannot pronounce simple words like “Check” (she says “Cheek”) and “Set” (she says “Seat”) properly.
If not, how do I change her pronunciation of internal words (ones that I haven’t entered) like Check (which she says after I check an item)?
On Apple device many voices are supported from within the app, but on Android only one voice is currently supported.
Are you on a Samsung device? We did notice that the default Bixby voice doesn’t pronounce Check properly, which seems pretty insane. I successfully changed it on a Galaxy device but I don’t recall the exact steps.
This may help…
If this doesn’t help you I will try to post the steps I followed.
Alas I have a Galaxy S7 which does not have Bixby. I’ve tried to install it but have had no luck.
Great - that did it. Now she says “Check” and “Set” properly! 