No, the tempo and meter remain consistent. I'm not sure what you're hearing, but I hear a lot of people saying "the beat 'speeds up' here" or some such, when they really mean that the rhythm is more dense in certain places, i.e., there are more 16th notes playing in certain sections rather than 8th notes (hi-hat, shaker, or tambourine, that sort of thing). But the tempo stays the same. At least on the first example; I can't take time to listen to the next one right now.
GJ