http://www.webbsleuths.com/911enhanced.wavPerhaps some may be interested in what a noise-reduced version sounds like. Attached is the "We're not speaking to you" supposed section of the 911 tape.
I won't put all the technical jargon here but let's see what you can hear.
I suggest you try to hear "Red, White and Blue" as well as "We're not speaking to you." I maintain that if you can hear one phrase, you can hear the other.