I would check and see if you have already or need dc blocking between the URI and the mic input as the mic input most likely has dc bias for the mic cartridge... the URI does NOT like DC back fed. There are DC blocked inputs and outputs on the other row of pins.. I found that DC was an issue on most radios I am hooking to on both the TX and RX sides... It causes the audio to get unsymmetrical...IN general I use those pins as they are capacitively coupled and most my issues like you are indicating.. stopped.. YMMV Just a thought to check... Doug KD8B
I am using the URI which has both DC-blocked and solidly-coupled. I have wired to the pin that has the DC block. For the moment, I am just feeding it to some amplified speakers for testing. They present a high impedance to the URI. I can't prove it, but it sounds like Asterisk is coming up with some audio that is bigger than the 16-bit number that is supposed to hold the value for the D/A and, of course, the next bigger number after full scale is zero or minus full scale or something equally horrible. It is strange that the pre-recorded messages would be subjected to this though. They are, by definition, good-sounding 16-bit audio data. When I listened to one offending phrase off-line (Apple Quicktime) and it sounded fine. I guess the recorded audio passes through additional DSP that alters the levels. Anyway, the limiting feature seems like a good thing to have both with and without pre-emphasis. Ken
_______________________________________________ App_rpt-users mailing list App_rpt-users@qrvc.com http://qrvc.com/mailman/listinfo/app_rpt-users