Time stretching software would slowly rebuild the tape delay over the next few minutes. Software looks for little pauses in speech and then stretches them out. After you eliminate the seven second delay you're kind if screwed if somebody swears again later in the programme. Let's hope that the effect of this is not going to encourage people to teste the board up ability to into please do not call in to test this with your local board operator. That's just inconsiderate.
There's a particular one-kilohertz tone that is universally understood to be covering up inappropriate words on radio and TV. But there are other options, too, like silence -- so why did this particular *bleep* sound become ubiquitous?
Bleep!