Thank you Gianni that really is useful.

It gets quite close to an explanation and summary of broadcast formats. I now need to assimilate and digest what you have written.

The plan is to understand better what is being transmitted, choose from the limited codecs available to me (if I can) and as you say, select a synthesised surround sound mode. This, latter I already have been doing to a limited extent.

I think we might agree that, based on the amount of interest this post has generated there are more than a few folk with similar problems around the UK.

Thanks again,

Geoff


System 1. AVI S21 amplifier, Meridian 504 tuner, Meridian 218 zone controller, ATC SCM35 passive speakers.
System 2. HUMAX Freesat Foxsat receiver, Pioneer PDP427XD Plasma TV, UHD722,Apple TV, G61RSL, AC12, DSP3300 centre, 2 X DSP5000 96/24 Smileys.