[sdiy] Synth Keybards and Number of Keys

[Grant Richter]

The problem with the new capacitive sensing technology is scan time  
for the keyboard.

These things are mostly designed for ATM machines looking for a  
single key press at a time. Not 8 key press chords.

For example, the Freescale parts specify 2-3 milliseconds per key for  
settling time.

A musical keyboard needs to scan and update every key in 1 millisecond.

That is what the Serge and Buchla keyboards do anyway. I don't know  
about the Synthi KS scan time.

On Mar 1, 2007, at 4:19 PM, ASSI wrote:

> On Donnerstag, 1. März 2007 19:53, Edward King wrote:
>> I am also experimenting with recreating string vibrato effects
>> through sensors on the key tops and would be interested in any work
>> that others are doing in this area too.
>
> I think capacitive sensing should work nicely. Check for instance
> http://www.cypress.com/capsense
> for more information.
>
>
> Achim.
> -- 
> +<[Q+ Matrix-12 WAVE#46 Neuron microQkb Andromeda XTk sonic heaven]>+
>
> Wavetables for the Terratec KOMPLEXER:
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>