The technician explained that this is done to prevent feedback looping up audio through the microphone from the speaker, although he said it can also be done by a slight delay in the time between when the sound that enters the microphone comes back out of the speaker again.
He further explain that this is done on both directions since when you speak into the microphone when you're on speakerphone you don't hear your voice come back out of your own speaker. This he said is done on the opposite end of the communication or the phone of the person you're speaking to, since their microphone is then partially muted.
This was brought up by me since I had trouble having someone hear me on the other side when they were in a room that had a lot of background noise just like described by the previous posters.
True half duplex would be a full muting of the microphone on 1 side when there is sound on the other and that is not the case with these phones, otherwise there would be hard interruptions for either side and sound would cut off completely when you start talking.
The best test would be to have 2 people on phones in speaker phone mode and have them hold the speaker up to their ear while making sounds, and seeing if they can hear the other person making sound while they're making sound themselves. If the technician was correct while making sounds on both ends 1 person would hear the other person loud and the other person would hear the first person quietly. Then when the sound from the person who is being heard loudly is interrupted on 1 side the person who still making sound will become the louder 1 on the other side and vice versa.
Sent from my DROID RAZR using DroidForums
Last edited by FoxKat; 02-29-2012 at 10:59 AM.
"Saving DROID Razr's, one battery at a time. :-)" - (credit SallyC)
Avatar is Maxwell Smart, AKA Agent 86, from "Get Smart" (with his signature "Shoe Phone"), a SitCom TV series by Mel Brooks & Buck Henry, based on the spy thriller series, "The Man From U.N.C.L.E.".
"Guidelines of Conduct" for DroidForums.net