Nick, Thank you for providing me with a explanation about the virtual device driver name, and the links to opens.org., that provide additional information.
As to the "problem" I am having... With the Debian/Ubuntu WSJTX package, I have problem with abnormal pulsing/clicking of the TX audio stream during the moment of PTT for about 1 second of TX. I can see these pulses in the VU meter graph that is part of the pavucontrol package. I thought that this TX problem I am having was unique to my various WSJTX hardware setups, but I have heard this abnormal TX "clicking/pulsing" being transmitted by another Amateur too, who I guess was using the Debian/Ubuntu package of WSJTX, while listening to transmissions on 14.076 MHz. I first heard this abnormal clicking TX noise while monitoring my own signal with a nearby Shortwave receiver. Early on in the development of WSJTX, Dr. Taylor suggested that WSJTX users should "listen" to their TX signal utilizing the various suggestions he made at the time. K1JT described them in his change log when a WSJTX upgrade was released. I always had a great signal sound when using the Windows version of WSJTX, but when I tried the Linux version, I notice these "pulses". For a long time, I thought is was just my software/hardware setup, but I have heard another Amateur TX with this clicking/pulsing noise. I only heard it once, from this other Amateur, he must have been using the Linux version of WSJTX. I have tried various radio interface setups, but the only way to stop the TX of this abnormal noise, is to use delay of the PTT for the first second of a WSJTX TX sequence. I also noticed a problem of some sort with the new PPA of WSPR 4.0, and Linux WSJTX. Generally speaking, WSPR 4.0 has functioned perfectly for me, but I installed the Debian/Ubuntu package of WSJTX on the same computer, and this installation broke the ability of WSPR 4.0 (Linux) to connect with pulseaudio. I thought that maybe this "pcm.p148k" .asoundrc file might help to resolve this issue, by telling both WSPR 4.0 and WSJTX what soundcard to use. Anyway, thanks Nick for explaining the technical details of pcm.p148k. I really do appreciate you taking the time to type out a reply to my post. I will investigate those links to opensrc.org with great interest. 73, John, N1ISA ------------------------------------------------------------------------------ _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
