Remember when Dory reveals that she can "speak Whale" in Finding Nemo? I actually use her Whale-speaking gift when I try to communicate over a bad cell phone connection (like Google Voice VoIP). If you speak Whale, slowly and elongating all your vowels, you can be understood much better. It sounds super-goofy on this end, but trust me, if you want your message to get through, it really works!
FYI, this type of speech modulation is generally called the Lombard effect or Lombard speech, although it usually doesn't go full Whale. If you search on Intelligibility-enhancing speech modifications: the Hurricane Challenge, you can find some interesting papers, there's a pretty deep rabbit hole there. One of the methods, SSDRC[2], specifically tries to modulate speech into that pattern. Of course, when I tried to apply it (from an earlier paper), it took quite some time to dig up their Matlab code which refused to run on my speech samples (recorded numbers, etc, for voice call verifications of phone number control). Oh well.