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 Forum index » DIY Hardware and Software » Musical Interfaces
QWERTY / Jammer Keyboard Mapping Question
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Stream Operator


Joined: Oct 13, 2007
Posts: 6221
Location: near Austin, Tx, USA
Audio files: 267

PostPosted: Sat Mar 22, 2008 9:42 pm    Post subject: QWERTY / Jammer Keyboard Mapping Question
Subject description: How should I map my QWERTY Keyboard to be like a Jammer?
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Hi, I've just written a fun program called Synth Lab that models a modular synth in software. Recently I added keyboard input to the program, playing a sinusoid with different frequencies depending on which key you press.

The program receives a number corresponding to each key. "a" is 3, "b" is 4, "c" is 5, etc. and the number keys plus most other keys are also mapped. I would like to make a translation table that maps something kind of like a Jammer keyboard layout into the standard QWERTY keys. The problem is, I am such a music amateur that I don't understand notes designated by letters, only frequencies and MIDI notes.

So what I am looking for is the information of that translation table. The "a" key should be what MIDI note number? The "b" key should be what MIDI note number, etc. Thanks in advance for your help.
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MusicScienceGuy



Joined: Jun 22, 2007
Posts: 97
Location: Vancouver, Canada

PostPosted: Sun Mar 23, 2008 1:03 pm    Post subject: Re: QWERTY / Jammer Keyboard Mapping Question
Subject description: How should I map my QWERTY Keyboard to be like a Jammer?
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Inventor wrote:
... So what I am looking for is the information of that translation table. The "a" key should be what MIDI note number?....

No problem, it's indeed fiddly to set up said table, so I'll look up the translation table I created and post it, later today, to save you the trouble.
Ken. ....
Here it is.
The translation I used, from PC keyboard key number to Midi Key number is ...
8,78;
9,78;
39,72;
44,61;
45,82;
46,63;
47,65;
48, 80;
49, 62;
50, 64;
51, 66;
52, 68;
53, 70;
54, 72;
55, 74;
56, 76;
57, 78;
59, 70;
61, 84;
73, 71;
91, 77;
93, 79;
97, 52;
98, 55;
99, 51;
100, 56;
101, 61;
102, 58;
103, 60;
104, 62;
105, 71;
106, 64;
107, 66;
108, 68;
109, 59;
110, 57;
111, 73;
112, 75;
113, 57;
114, 63;
115, 54;
116, 65;
117, 69;
118, 53;
119, 59;
120, 49;
121, 67;
122, 47;

With this, the G key sounds a middle C, once you have the map set up, it's easy to shift it around - just add or subtract uniformly from the second column's values.
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TonE



Joined: Sep 08, 2009
Posts: 24
Location: Mars

PostPosted: Thu Sep 10, 2009 4:22 am    Post subject: Reply with quote  Mark this post and the followings unread

What is the basic idea behind this mapping method/standard?
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MusicScienceGuy



Joined: Jun 22, 2007
Posts: 97
Location: Vancouver, Canada

PostPosted: Tue Sep 15, 2009 12:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

TonE wrote:
What is the basic idea behind this mapping method/standard?

See the www.thummer.com pages.
ken.
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