On 10/06/2015 18:09, Joe Taylor wrote: > Hi Charlie and all, Hi Joe, > > On 6/10/2015 12:50 PM, [email protected] wrote: >> Hi Joe >> >> Works fine, thanks! Checked over a 20dB range and seems very accurate. >> >> For a given slider position, I believe the level is higher now than it was >> previously. > Should be no change with the slider at top. At other positions the > attenuation is only half as many dB as before. > > But... maybe Bill wants to change it back? I don't really care; but in > that case, at least we should remove the Tool Tip that claims to be > calibrated in dB! Also: I think I have made the attenuation() and > setAttenuation() functions inconsistent. That should be fixed. I prefer accuracy and wasn't suggesting your change was wrong. I was just suggesting that the range of the slider is now perhaps too little and that somewhere between 30dB and 60dB might be useful. -30dB is definitely usable on air as it is still quite loud audibly. > > I had thought we were simply reducing the amplitude of (digital) samples > being sent to the sound card. If we are (now) using Qt to mess with OS > sound-system volume controls, all calibration bets are off! The adjusment via Qt and therefore the system levels is essential on Linux where the stream level gets reset to 100% after every transmission :(
... 73 Bill G4WJS. ------------------------------------------------------------------------------ _______________________________________________ wsjt-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/wsjt-devel
