After poking around some more into this latency issue I think that ReSound’s elimination of the intermediate device (such as Streamer and iCom) has the benefit of a speedy connection. Here’s why;
Any communication protocol has Error Correction Schemes. I found these words which describe Bluetooth´s Error Correction Schemes;
Bluetooth units often have to contend with electro-magnetically noisy environments. Thus, the need for some kind of error-detection and correction. For error-detection, Bluetooth uses various checksum-calculations.
The other manufacturers who use a proprietary intermediate device worn around your neck have to perform this this error detection/correction twice. Once from the Bluetooth source to the intermediate device and then a second time between the intermediate device and the hearing instruments (HIs).
This should give the ReSound Alera-61 a large advantage over the others in streaming speed.
Makes me wonder why the other guys used an intermediate device in the first place? Why did they build a 2-step communications chain to convert Bluetooth into a proprietary communications protocol? It makes no sense to me.
Also, I wonder if they will change now that ReSound has come out with a one step Bluetooth streaming?