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brummer10 / Mamba

Virtual Midi keyboard and Midi Live Looper for Jack Audio Connection Kit
BSD Zero Clause License
76 stars 5 forks source link

Custom key mapping for chromatic keyboards (for example a button accordion) #34

Closed balajahe closed 3 years ago

balajahe commented 3 years ago

Thanks for the great program!

Regarding custom key mapping - there is one mistake and one wish.

1) There is no way to specify the "Enter" key.

2) The program is perfect for modeling chromatic keyboards (for example a button accordion), but duplication of keys is typical for them, that is, I need the ability to assign several different keys to the same note. Unfortunately, there is no such possibility in any virtual midi keyboard I know. https://en.wikipedia.org/wiki/Chromatic_button_accordion

Thank you!

brummer10 commented 3 years ago

Hi Okay, I guess duplication of keys will be enough then? I've implemented now the possibility to setup 2 keys per note in the custom keymap editor. Also you could use the enter key now. regards hermann

balajahe commented 3 years ago

Great, thank you very much for your promptness, I'll check it tomorrow! PS I use your keyboard in conjunction with Ardor, the main advantage is the lack of latency, which was noticed with VMPK.

balajahe commented 3 years ago

I was able to simulate the keyboard of a 4-row button accordion using the upper row of numeric keys. The "Backspace" key fits perfectly into this row, if possible, add its support please! PS In general, I am very pleased, there is a small suspicion that there is a slight time delay on the duplicated keys, but this is inaccurate, you need to further monitor.

brummer10 commented 3 years ago

Good to hear you like it.

To the suspicion that there is slight time delay on the duplicated keys: That is very unlikely. From the logic it is implemented you may be more likely be able to hear a delay from C1 to C2 then from key1 to key2. But we talk about a fraction of a microsecond here. I take a lot of care to avoid any delay in reaction of the keyboard, even for the duplicated keys.

The "Backspace" key fits perfectly into this row, if possible, add its support please!

Sorry, but this is used to edit the Keymap editor (remove key), so it will be a bit tricky to support it as key for the keyboard. Truth is, we could use the delete key for this, but, don't react on the Backspace key by remove the last entry means leaving the xdg specifications. Tricky, I'm not sure I would do that, even if I understand your request.

brummer10 commented 3 years ago

I do some measurement on the response time, it's between 2-3µs (microsecond), regardless which key is pressed.

balajahe commented 3 years ago

everything's working just fine!