I was going to post this in ‘Canadian Accent…’ but Manhattan closed it for some bizarre reason.
Canadians do tend to pronounce their vowels more carefully than in ‘Standard American’, where the vowels all tend towards schwa. For example, ‘shout’ is pronounced shuh-oot, but with no break in the middle.
Newfoundland dialects are also quite divergent from ‘Standard American’. being described as basically 16th-century West country english, heavily influenced by Irish. The syntax, stress, and vocabulary are quite a bit different from that in the rest of Canada.
Many years ago, I worked at a resort in northern Ontario, and I shared a double room with an ‘Outport’ Newfoundlander. When I first spoke with him, he talked for several minutes, but I failed to understand a single word. The main differences were in rythm and stress, and in morphology, i.e. dropping and adding ‘h’ to the front of words.