Hi Dave
We agree on the fact that the physical phenomena that you mentioned previously will also have an impact on Ethernet transfers

However, the Protocol was developed (and since refined) to make sure that even when these physical issues were 'impactful', that the Data arriving at the Endpoint was still Identical to what was actually sent

If I was to try and summarize or compare I might say the following:

In Analog, Digital over SPDIF and Digital over AES / EBU (SL) connections, ALL the 'Data' (Signal) received by the Endpoint is still used........and it is used even if the physical phenomena described above has impacted the 'data' (Signal) in some way.......so even if the 'data' (Signal) is 'modulated'; delayed timing wise; or "corrupted", the data still gets used by the Endpoint......and it gets used as the Endpoint does not know that the 'data' is "different" to what was sent and assumes the data to be 'correct'

Ethernet is different in that it allows the Endpoint to compare the Data received with what was sent......and will simply Discard any data which has been impacted by the physical phenomena you described earlier......it also allows the Endpoint to request that the particular impacted data be re-sent......and if it doesn't ever receive an identical 'packet' then the result is 'blanks" on a PC or Tablet screen.......or Dropouts in the Sooloos world

So, Ethernet prevents the use of 'impacted' data and allows obvious identification by the user that data is missing

This 'logic' comes from the IT world, where it was long ago decided that essentially "NO Data is better than the WRONG Data"......which is made sense of by the following examples

** better to display No Stock Price than the Wrong stock price........as the Wrong stock price could have catastrophic implications

** better to display No Reactor Core Temperature than the Wrong one (obviously still doesn't overcome faulty sensors producing the wrong result).........as again the Wrong temperature could lead those in charge to take the incorrect remedial actions

** better to leave a blank area on an X-Ray or MRI scan, than to present essentially 'false' information on the broadcast Scan.....as that could have catastrophic impact on the Diagnosis and possibly the patient

And the knock on effect of all the above for us in the Sooloos World is that Dropouts highlight to the Listener that there is an issue that he needs to deal with


Last edited by Ronnie; 2014-09-17 04:57.
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