Could it be done in hardware? Absolutely. Would it be better than the current solution, I doubt it. Mainly because you still have the issue of detection + switching latency. Even if you detected the peak instantly, you still have to wait for the hardware to switch from RX to TX which takes on the order of ~50ms. This is just enough time to miss the first syllable for many words.
A better solution could be done in software by allowing the monitor to stay as close to real time as possible while the transmitted output is delayed enough to take care of the switch time. This is actually an ideal solution for both voice modes and CW and is entirely possible with 4 port cards such as the Delta 44 and the FireBox. Eric Wachsmann FlexRadio Systems > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > radio.biz] On Behalf Of Mark Ericksen > Sent: Tuesday, February 28, 2006 10:58 AM > To: FlexRadio@flex-radio.biz > Subject: [Flexradio] Question About VOX and Other Stuff > > Hello everyone, I am a soon to be SDR-1000 user (it's on order). I have > been following the threads on this forum with great interest and have even > been reading a C# book when time permits (and I'm going to need a lot of > time). > > There has been some discussion lately about latency when using VOX. My > question is why does VOX have to be implemented totally in software? > Wouldn't it be feasible to implement a hardware/software solution? > Couldn't a small circuit board be attached to the back of the microphone > connector that could be managed by the parallel port and would that solve > the any question of latency? > > Just asking ....... be gentle ....... I'm new. > > Mark Ericksen > AD4MA > > > > > > > _______________________________________________ > FlexRadio mailing list > FlexRadio@flex-radio.biz > http://mail.flex-radio.biz/mailman/listinfo/flexradio_flex-radio.biz > Archive Link: http://mail.flex-radio.biz/pipermail/flexradio_flex- > radio.biz/ > FlexRadio Homepage: http://www.flex-radio.com
