Attempt at Imitation

For my recording of "The butter spilled on the cot," I decided to imitate a Wisconsin accent. To do this, I had a guy down the hall from Wisconsin repeat the phrase again and again. At first, it was hard for me to even get close to the way he said "cot." Eventually, though, I think I got a fairly decent recording of the sentence mainly focusing on the words "butter," "on," and "cot." I thought butter might be a word that he would pronounce differently, but as far as I could tell, our pronunciations were the same. It was interesting to record myself, as well. Before hand, I thought I pronounced the "t"s in butter, but after listening to myself, I say more of a "d" sound. 

When I looked at the spectrograms, they seemed to be similar. The two recordings were about the same length, and even the amount of time on each word was close. The frequencies, however, varied a lot. The Wisconsin take ranged from 663.1 to 1564 Hz, while my normal take ranged from 1130 to 1964 Hz. Also, the amplitude on the Wisconsin recording of the vowel sound in "cot" was much higher than the amplitude on the same vowel in the other recording.