I used Audacity to edit the audio file. I wanted to change the speed of my speech to see if it would make any difference in how I sounded. I clicked on the “Effect” function and then selected “change speed” from the dropdown menu. I tried a few adjustments before settling on a 2.8% change to the speed. Below is the edited version.
This effect works pretty well. The effect on Audacity accomplishes the speed-up without raising the pitch of your voice (which would happen if we just compressed the sound wave).