I have the male voice version on my Android app for this exercise and it is just as bad. He pronounces motiv(ã) instead of motiv(ə). It does that with many other words in most exercises. That is too bad because the male voice sounds really cool but we are getting very misslead with his wrong pronunciations.
I agree, the female voice is very unclear at times but is a lot more acurate when it comes to pronouncing the words. Compare with other good translators and see for yourselves.