Quoting Martin Deutsch <[EMAIL PROTECTED]>:
I've been emailing Christopher off-list about this - I suspect it may
well be a reciever issue. Most of the services on mux 1 are coded in
London, and are the same across much of the country on DTT -- and I'm
not seeing any phase issues on our monitoring here, with a couple of
different set-top-boxes.
I've suggested that Christopher tries another reciever, or moves the
aerial to somewhere with better signal strength. (I don't know that
much about how the decoding process works, but perhaps someone more
fluent in DVB will know - is it possible that error correction and
recovery could be doing odd things to the sound in the event of low
signal strength?)
- martin
This doesn't sound like an interference issue.
For interference to only affect the MPEG-Audio PES, the interference
would have to be spread correctly across the approx. 2k carriers with
the interference occurring at exactly the right time so that once the
data had transited a symbol de-interleaver, a bit de-interleaver, a
Vitterbi decoder and a Reed-Solomon Decoder only the MPEG-Audio PES
packet headers are effected.
This could be checked by using something like dvbsnoop/tzap or
TSReaderLite to look to see if any error messages are being generated.
Other possible errors include an error in the Broadcaster Mix - but
this hasn't been apparent to anyone else - or an error in installation
or manufacture.
---
ST
[EMAIL PROTECTED]
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