i told this here
viewtopic.php?f=6&t=2003Here are my thougts
1st, we could abandon the 44,1kHz system and replace it by 48 and/or 96
why? because 44 is only used on CD, and CD will fade out before the end of the decade
also 48 is the standard for DAT and DVD since the 90's, and 96 is the new common format for Hi-res audio in music industry + also Blu rays.
Stéréo :
Your system is inspiring, but it relies on Qam, wich is going to be obsolete too.
Your system can be interesting in case of radio wave transmission, where bandwith is really limited.
But as for files i propose two systems to implement stéréo :
1st : for those who wants to stick with CD format for a while and use simple normal stereo files.
We can have the sound in stéréo like a standard Cd audio + ontop of the sound adding the NBTV picture signal on both channels
Then, the receptor needs to invert the phase and reinjects it. It will extract the center channel ( some sound editing softwares can do this too, it's easy )
So from 2 channels we got 3 channels
2nd : a drastic change in format and profits of the new 5.1 format.
5.1 files are done for surround sound, normaly it works with a pair of front stereo, back stereo + a center channel for voice, and a bass channel.
Here we coud use the stereo for the sound, and the center channel for the picture.
3 channels are used, but there is 3 other ones left
Why not using a multiple encoder software that output 30line, 32line, 60line common formats and having them on the different channels
remains one. This cound be use for bass, but do we need it ?
or language translation track, data?, or another (4th) video channel in another format
( edit : colour ! )
So we could share one file with everything, stereo, + up to 4 different NBTV format, so everyone will be happy since we can have different televisors.
There are advantages and drawbacks.
Advantages : now most computers have 5.1 outputs, DVD players, and Blu Rays players can read and output this format too
Drawbacks : drastic change in the system, files are really huge !
( but now HDD are huge too and internet is faster and faster )
Maybe we can also find a compromise and only use 2.1 files