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Posted by TGPFarnborough (U11961117) on Wednesday, 14th May 2008
The FM transmission is in stereo but the podcast is in mono, can some one explain why in 2008 we still have to listen to a mono podcast?
Theoretically you don't - they switched to stereo over a week ago. Are you catching up on old ones, or did somebody screw up?
Thu, 15 May 2008 12:34 GMT, in reply to TGPFarnborough in message 1
One good reason is that mono only uses half the bandwith of stereo.
Actually, Monty, as it's compressed, on average mono uses about 80% of the bandwidth of stereo, for the same bitrate. You see, in the case of these podcasts, it's very rare to get two people talking at the same time at two different places in the stereo "image", and a single person talking placed at an arbitrary point between the speakers can compress almost as small as a mono signal.
The reason the size of podcasts recently doubled was that the bandwidth doubled when they went to stereo. (128kb/S as opposed to the original 64kb/S) - by your calculations either this would have made no difference to the overall quality (it increased a great deal) or it would have quadruples in size instead of just doubling.
Mon, 19 May 2008 16:55 GMT, in reply to Peet (the Pedantic Punctuation Policeman, Muse of Lateral Programming Ideas, Spoonwinner, Cheese Namer & Zaphodista) in message 4
Hve you considered revising your name? Peet (the Patronising Pedant, Punctuation Policeman, Muse of Lateral Programming Ideas, Spoonwinner, Cheese Namer & Zaphodista) has a better ring to it. More bandwidth, though...
I Hve not.
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