For my radio bumper I recorded my voice saying the radio title and slogan. I then played around with echo, amplifying, repeating, and other attributes until I liked how it sounded. I then when to Free Music Archive from WFMU “It’s not just free music; it’s good music” to find background music. Once I put it all together I played with it some more to make it fit. I used Audacity when I was editing the sounds.
I hate listening to the sound of my voice but overall I am happy with how it turned out.