[RTTY] 2 tone vs MMTTY

[Kok Chen]

On Jun 11, 2014, at 9:00 PM, Ed Muns wrote:

>  OTOH, that part of the decoding algorithm is probably key to
> 2Tone's excellent copy of weak and other marginal signals.

The trade off between a "low-latency crummy decoder" and a "high-latency better decoder" can be solved if you allow new GUI elements into your modem.

Run two demodulators.  The low-latency one prints first.  The high-latency decoder then overprints over those characters when they become available from the high latency decoder.  This way, your eyes do not need to switch its focus between two windows.  Strong signals will print correctly right away.  

Variations on this theme include using two different color fonts that produces a third color when the two decoders agree, etc.

I had discussed this technique before with G3YYD for making even longer latency decoders tolerable (for example, ones that corrects bit clocks by using "future" bits for pseudo-synchronous clocking).  But David is hobbled by the existing modem user interfaces.

73
Chen, W7AY