The spectrum shows the DSP filter center frequency and its bandwidth using 3 yellow lines: one for the center frequency and two showing the filter bandwidth.
By touching the spectrum you can also see the signal shift in Hz and the frequency (in MHz) of every single spectrum line.
You can also “zoom in” and “out” to have smeller/larger spectrum bandwidth.
This is the first step and next step is improve performances (now it refreshes every half a second but can be customized and depends on the device speed), add a waterfall as well as the option to set the center frequency and the filter bandwidth by simply touching the spectrum area.
I know that many of you were waiting for this option.
Please uninstall and reinstall the app for the upgrade. This feature is available for the FULL version only.
Post by Andrea IU4APC on Jul 11, 2014 16:36:38 GMT
version 9.8 (DoubleView) is available in the Google Store with the following features:
- New Audio View with Spectrum AND Waterfall at the same time! - New color maps for spectrum and waterfall - Added macro symbols for Sent Serial (SSER |) and Sent RST (SRST ^) - Added CW REV mode - Various small interface retouches - Various bug fixes
Thanks to all the users that sent me emails with suggestions and bug reporting.
Andrea,great work as always, AMD the quick new feature updates are like a daily present!
There foes appear to be a bug: when selecting the presets screen, the app refuses to return to the main screen and the USB connection appears to revoonect over and over.
I am using a Nexus 7 (2013) which works with the splitter cable you recommended.
The tablet does appear to enable some for of auto levels, so when the band you are looking at in spectrum or waterfall (or both!)are quiet, there is a lot of activity seen, even though there are no audible signals.
Once the band is busy, like 14,070 can get with psk31, then the reading is as you would expect_ with very clear tracks in the waterfall.
Perhaps you can add some form of audio input control that will override any defaults on the device?
And finally, I really like the ui choice you made in spectrum/waterfall mode with the macro pop-up still available and very usable.
Again, thank you for the work. Independent software development is hard to do, so its extra appreciated.
Post by Andrea IU4APC on Jul 11, 2014 21:23:22 GMT
thanks for reporting the Presets bug. I modified the way it is closed but evidently it doesn’t work like expected. I’ll fix it immediately.
The auto-adjusting works as expected. When there’s no activity all you see is noise. When a signal is present it stands out and the noise disappears. That creates some too high signals when it’s noise. But that also permits to low signals to stand out and be shown very well. So that is exactly how I wanted to behave.
Thanks again for your feedback and keep on giving feedback and reporting bug. That helps me a lot to keep on developing the app and make it better and better.