Re: [wsjt-devel] Bandaid for stupid Qt volume issue in wsjt-x
On 22/07/2015 20:33, Richard Shaw wrote: Hi Richard, Wed, Jul 22, 2015 at 2:14 PM, Bill Somerville g4...@classdesign.com mailto:g4...@classdesign.com wrote: On 22/07/2015 18:45, Richard Shaw wrote: Hi Richard, I'm not sure who else has battled this but Qt in their infinite wisdom decided they need a random name for the audio connection to PulseAudio which means it will NEVER remember the volume level you set. What's wrong with setting the levels in WSJT-X, those settings are saved between sessions? I have to cut it WAY down and I haven't done any actual analysis, but the instructions indicate that that's not a good thing. Why amp up your audio in software just to knock it back down in software? It can't possibly help the audio quality. You are right in principle but I would expect the default level to be 0dB i.e. what comes out of the A/D converter so doing all digital attenuation in WSJT-X is optimal since it limits any accumulated quantization error. The same would apply if the WSJT-X level were left at 0dB (the middle I believe) and all digital adjustment were done in the pulseaudio digital domain. The best solution is to set the analog level at he rig to a best approximation and only do fine adjustments per band or to compensate for AGC variations in the Rx. And either way, it's still just obnoxious on the Qt side. I wonder how many presets PulseAudio has stored for device names it will never see again? Agreed that it would be nice to have a way of setting the stream name on Linux, but there is an alternative where, like we do with Tx, the stream level can be directly adjusted from the application using the stream (http://doc.qt.io/qt-5/qaudioinput.html#setVolume). This allows the application to store the level itself. Currently WSJT-X doesn't use this, instead it has its own gain/attenuation stage further downstream in the DSP chain. I believe the built in gain stage is both historical from before we switched to Qt audio and also to provide gain as well as attenuation (gain is not available on some platforms). I expect the availability of adjustment of the stream level via the Qt API is the reason why our request to control the stream name has been ignored by the Qt developers. Thanks, Richard 73 Bill G4WJS. -- ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
Re: [wsjt-devel] Bandaid for stupid Qt volume issue in wsjt-x
On 22/07/2015 18:45, Richard Shaw wrote: Hi Richard, I'm not sure who else has battled this but Qt in their infinite wisdom decided they need a random name for the audio connection to PulseAudio which means it will NEVER remember the volume level you set. What's wrong with setting the levels in WSJT-X, those settings are saved between sessions? I did some digging on PA command line options and came up with a script to start wsjtx: launch-wsjtx: #!/bin/bash $(which wsjtx) sleep 15 pactl set-source-volume alsa_input.pci-_00_14.2.analog-stereo 21000 of course you need to substitute the correct sound card device. Something like: $ pacmd list-cards | grep alsa_input The last option is the volume level, you can specify it in multiple ways but I settled on figuring out what integer input seemed to work well. If you create your own script don't forget to mark it executable! $ chmod +x launch-wsjtx Thanks, Richard 73 Bill G4WJS. -- ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
Re: [wsjt-devel] Bandaid for stupid Qt volume issue in wsjt-x
Wed, Jul 22, 2015 at 2:14 PM, Bill Somerville g4...@classdesign.com wrote: On 22/07/2015 18:45, Richard Shaw wrote: Hi Richard, I'm not sure who else has battled this but Qt in their infinite wisdom decided they need a random name for the audio connection to PulseAudio which means it will NEVER remember the volume level you set. What's wrong with setting the levels in WSJT-X, those settings are saved between sessions? I have to cut it WAY down and I haven't done any actual analysis, but the instructions indicate that that's not a good thing. Why amp up your audio in software just to knock it back down in software? It can't possibly help the audio quality. And either way, it's still just obnoxious on the Qt side. I wonder how many presets PulseAudio has stored for device names it will never see again? Thanks, Richard -- ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
Re: [wsjt-devel] Is this list alive?
On Wed, Jul 22, 2015 at 8:00 AM, Joe Taylor j...@princeton.edu wrote: What's up at SourceForge ??? This is getting ridiculous. Maybe it's time for us to consider github seriously? I tried to send an email the other day and it bounced... Thanks, Richard KF5OIM -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
Re: [wsjt-devel] Is this list alive?
On Wed, Jul 22, 2015 at 08:12:57AM -0500, Michael Black wrote: Patience...there's nothing to prevent this from happening to github too or anybody else. Restoring a couple terabytes of code can take a while...and do it propertly/safely too. Not to mention http://www.extremetech.com/computing/120981-github-hacked-millions-of-projects-at-risk-of-being-modified-or-deleted SourceForge developer pages online http://sourceforge.net/blog/category/status-updates/ 73 Mike W9MDB On Wed, Jul 22, 2015 at 8:00 AM, Joe Taylor j...@princeton.edu wrote: What's up at SourceForge ??? This is getting ridiculous. Maybe it's time for us to consider github seriously? -- Joe, K1JT -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel -- - d...@freebsd.org d...@db.net http://www.db.net/~db -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
[wsjt-devel] Is this list alive?
What's up at SourceForge ??? This is getting ridiculous. Maybe it's time for us to consider github seriously? -- Joe, K1JT -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
Re: [wsjt-devel] Is this list alive?
Patience...there's nothing to prevent this from happening to github too or anybody else. Restoring a couple terabytes of code can take a while...and do it propertly/safely too. SourceForge developer pages online http://sourceforge.net/blog/category/status-updates/ 73 Mike W9MDB On Wed, Jul 22, 2015 at 8:00 AM, Joe Taylor j...@princeton.edu wrote: What's up at SourceForge ??? This is getting ridiculous. Maybe it's time for us to consider github seriously? -- Joe, K1JT -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/ ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel -- Don't Limit Your Business. Reach for the Cloud. GigeNET's Cloud Solutions provide you with the tools and support that you need to offload your IT needs and focus on growing your business. Configured For All Businesses. Start Your Cloud Today. https://www.gigenetcloud.com/___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
[wsjt-devel] -O3 -ffast-math for wspr decoder
Hi all, While playing with an alternative to the Fano decoder over here I discovered that using -O3 -ffast-math significantly decreases execution time of the decoder on my linux and OS X platforms. Near as I can tell, cmake is currently using -O2 for Debug and -O3 for Release versions. I need advice on the right way to modify CMakeLists.txt to make sure that (only) the wsprd sources are compiled with -O3 -ffast-math. Steve k9an -- ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
Re: [wsjt-devel] Bandaid for stupid Qt volume issue in wsjt-x
Hi Richard and Bill, I've read the docs: (http://doc.qt.io/qt-5/qaudioinput.html#setVolume). But, how do you have two or more Input devices as in I and Q ? (I'm not a Qt programmer) Alan VK2ZIW On Wed, 22 Jul 2015 20:48:47 +0100, Bill Somerville wrote On 22/07/2015 20:33, Richard Shawwrote: Hi Richard, Wed, Jul 22, 2015 at 2:14 PM, BillSomerville g4...@classdesign.comwrote: On 22/07/2015 18:45, Richard Shaw wrote: Hi Richard, I'm notsure who else has battled this but Qt in theirinfinite wisdom decided they need a random namefor the audio connection to PulseAudio whichmeans it will NEVER remember the volume levelyou set. What's wrong with setting the levels in WSJT-X,those settings are saved between sessions? I have to cut it WAY down and I haven't done any actualanalysis, but the instructions indicate that that's not agood thing. Why amp up your audio in software just toknock it back down in software? It can't possibly helpthe audio quality.You are right in principle but I would expect the default level tobe 0dB i.e. what comes out of the A/D converter so doing all digitalattenuation in WSJT-X is optimal since it limits any accumulatedquantization error. The same would apply if the WSJT-X level wereleft at 0dB (the middle I believe) and all digital adjustment weredone in the pulseaudio digital domain. The best solution is to set the analog level at he rig to a bestapproximation and only do fine adjustments per band or to compensatefor AGC variations in the Rx. And either way, it's still just obnoxious on the Qtside. I wonder how many presets PulseAudio has stored fordevice names it will never see again?Agreed that it would be nice to have a way of setting the streamname on Linux, but there is an alternative where, like we do withTx, the stream level can be directly adjusted from the applicationusing the stream (http://doc.qt.io/qt-5/qaudioinput.html#setVolume).This allows the application to store the level itself. CurrentlyWSJT-X doesn't use this, instead it has its own gain/attenuationstage further downstream in the DSP chain. I believe the built ingain stage is both historical from before we switched to Qt audioand also to provide gain as well as attenuation (gain is notavailable on some platforms). I expect the availability of adjustment of the stream level via theQt API is the reason why our request to control the stream name hasbeen ignored by the Qt developers. Thanks, Richard 73 Bill G4WJS. Alan Man's greatest waste of time: Worshipping the wrong God. Consider Jesus. --- Alan Beard Unix Support Technician from 1984 to today 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc.. +61 2 47353013 (h) Support Programming, shell scripting, C, assembler 0414 353013 (mobile) After uni, electronics tech -- ___ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/wsjt-devel
