From: "Glenn Meadows" 

There's actually a device sold to radio that does this in real time now.

You start off with a few local spots while you take the live feed from the
network into the box, to get a play buffer.  Set the box for length of
original, and how long you want the result to be (i.e. 58 minutes, to 56
minutes).  Then, you start playing out of the box at the appropriate
delayed start time, and the finished program ends at the same time the real
feed does.  Works best on dialog, for sure, but it can also be done with
Music, via vari-speed/pitch shift upwards.

--

Glenn M.
"Don Hills"  wrote in message
news:gl0oFtgaXaYZ092yn{at}attglobal.net...
> In article ,
> "Bob.Ackley". wrote:
>>More likely the reason was to get the music over with faster so they could
>>cram
>>in another commercial or two.
>
> Just a few years ago here, a local radio broadcaster used to subscribe to
> and rebroadcast the BBC World Service. To pay for it, they sold
> advertising
> time. To make the time to insert the adverts, they used software to
> recognise and shorten pauses and silences. They used to run 2 to 4 minutes
> of ads per hour.
>
> --
> Don Hills    (dmhills at attglobaldotnet)     Wellington, New Zealand
> "New interface closely resembles Presentation Manager,
> preparing you for the wonders of OS/2!"
>    -- Advertisement on the box for Microsoft Windows 2.11 for 286

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