<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto">I don’t know if this fits your situation, but the only time I’ve had choppy audio is when something in asterisk or Linux is unhappy; most likely asterisk. I’d check your USB related settings (usbradio or simpleusb).<br><br><div id="AppleMailSignature" dir="ltr"><div>Thanks,</div><div>Bob</div><div>K6ECM</div><div>73</div><div><br></div></div><div dir="ltr"><br>On Mar 31, 2019, at 7:26 AM, Rob Noll <<a href="mailto:rob@nollmail.com">rob@nollmail.com</a>> wrote:<br><br></div><blockquote type="cite"><div dir="ltr"><meta http-equiv="Content-Type" content="text/html; charset=us-ascii"><meta name="Generator" content="Microsoft Word 15 (filtered medium)"><style><!--
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</o:shapelayout></xml><![endif]--><div class="WordSection1"><p class="MsoNormal">Good morning all,<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">I’m trying to set up an AllStar node using a USB fob based on the CM119 chip. I’m having issues with choppy/stuttering audio, particularly on telemetry. It’s bad enough that it renders the CW ID meaningless.<o:p></o:p></p><p class="MsoNormal">My original thought was lack of CPU power, but I have tried it on a Raspberry Pi 2, Pi 3, and several virtual machines on a quad-core PC with identical results. Also, the choppiness is NOT as bad when using the full USB driver instead of SimpleUSB, which I believe conclusively rules out CPU power.<o:p></o:p></p><p class="MsoNormal">I’ve also tried a powered USB hub, thinking that the USB device was not receiving enough power, with no improvement.<o:p></o:p></p><p class="MsoNormal">I’ve used the Android mobile app to connect to the node, and the telemetry does not seem to be choppy when listening to it over the app. While I need to do some more testing to say this conclusively, I do believe at this point that my issue is narrowed down to the USB fob itself and/or the specific audio stream being sent to the device.<o:p></o:p></p><p class="MsoNormal">I’m currently searching for a way to alter the sample rate that ASL is sending the audio to the device in.<o:p></o:p></p><p class="MsoNormal">Has anyone experienced this, and does anyone have any suggestions?<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Thanks and 73,<o:p></o:p></p><p class="MsoNormal"><o:p> </o:p></p><p class="MsoNormal">Rob, WX1N<o:p></o:p></p></div></div></blockquote><blockquote type="cite"><div dir="ltr"><span>_______________________________________________</span><br><span>App_rpt-users mailing list</span><br><span><a href="mailto:App_rpt-users@lists.allstarlink.org">App_rpt-users@lists.allstarlink.org</a></span><br><span><a href="http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users">http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users</a></span><br><span></span><br><span>To unsubscribe from this list please visit <a href="http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users">http://lists.allstarlink.org/cgi-bin/mailman/listinfo/app_rpt-users</a> and scroll down to the bottom of the page. Enter your email address and press the "Unsubscribe or edit options button"</span><br><span>You do not need a password to unsubscribe, you can do it via email confirmation. If you have trouble unsubscribing, please send a message to the list detailing the problem. </span><br></div></blockquote></body></html>