I’m not sure if I’m following you relative to the 6 interfaces for the instrument sound settings. The user interface (UI) to change between sounds is called the ‘Instrument browser’ and has not changed recently.
I think you’re referring to the n-Track Sampler settings view. That view has been redesigned in the latest Android update (and will be included in the next Windows, Mac & iOS updates), and is now shown on top of the on-screen keyboard, so that you can easily adjust the Sampler settings while simultaneously hearing the results of the changes you’re doing (previously it was a separate screen so you needed an external hardware keyboard to play while adjusting the settings).
The Sampler settings now by default shows two XY controllers that allow you to set vibrato and tremolo, plus an ADSR graphycal controller:
You can still go back to the parameter based view (which was previously horizontal sliders, now it’s made of knobs subdivided in tabs), by tapping on the 2nd button on the top left of the screen:
The previous version had the settings for the Sampler and the Synth mixed together. The Onda Synth also has now a separate page with different settings:
It is true that some settings that were present in the previous version have been hidden in the latest update. They are mostly settings that were there either for development/testing or were very difficult to understand/adjust. In general the old sampler/synth settings were a bit chaotic. We plan to re-introduce some of these settings (such as for the arpeggiator) with a better UI in one of the next updates.
When you make a change to a setting in the the Synth or Sampler UI, that change is applied only to the track where the Synth/Sampler has been opened from (i.e. that is currently selected).
If you say add an instrument track, select Violin from the Instrument browser, edit the Sampler settings, then create a new track and select the violin again from the Instrument browser, you will again get the default settings for the Violin preset. We may later add the ability to save your custom sound presets.
We plan to post a tutorial video on how to use the new Sampler and Synth UI soon.
Please let me know if you have comments or suggestions for these views.