[arm-allstar] RIM-Lite/RC210 Users

[Kevin Custer]

Asterisk - app_rpt is absolutely flat. If you have some hump in your 
audio chain, it's not coming from the application or the particular 
CODEC chosen.  Maybe it's your radio adapter or the way you have it 
implemented.  Are you SURE you have all of the emphasis stages 
reciprocal?  If not, you might be double de-emphasizing the receiver 
audio or not pre-emphasizing your transmitter audio.

Here are some graphs using TrueRTA to show you what to expect using the 
various bandwidths available in the application:

CM119A based FOB under Windows as a base-line full audio bandwidth response:
http://www.masterscommunications.com/temp/CM119B/Rude%20-%20Adapter%20full%20bandwidth.jpg

CM119A based FOB using standard audio bandwidth simpleusb (no enhanced 
filter rules - no PL filtering):
http://www.masterscommunications.com/temp/CM119B/files/basic-simpleusb-audio-bandwidth.jpg

CM119A based FOB using standard audio bandwidth simpleusb (PL filtering 
enabled):
http://www.masterscommunications.com/temp/CM119B/files/simpleusb-with-ctcss-filter-audio-bandwidth.jpg

CM119A based FOB using the WN3A wide audio bandwidth filter rules in 
usbradio (PL filtering enabled):
http://www.masterscommunications.com/temp/CM119B/files/usbradio-wider-audio-bandwidth.jpg

Kevin W3KKC


On 8/21/2019 2:04 PM, "Mike Sullivan via ARM-allstar" wrote:
> Valid points as always Doug. Unfortunately the clubs already have those
> controllers. I do plan on setting up backup RF links with local Allstar
> nodes, so it does help in that regard. I’m just not impressed with the
> Allstar codec being used. I may be missing something on how to change it..
> Echolink EQ-wise sounds fine, but Allstar has a low-mid hump that I really
> do not like. (This is the sound guy in me talking)
>
> Mike
>