Digital Orchestra Tools: De-bouncing accelerometer data during thrust / jab

[d.andrew STEWART]

This is , sort of, an old idea: using one axis of an accelerometer to create two different impulses. I want to move the accelerometer quickly in one direction (e.g., "jab") to get one impulse and then, move in the opposite direction to get a different impulse.

The issue, we know, is that moving in the "target" direction can often lead, firstly, to a strong reading in the opposite direction.  Essentially, I need a way to "cancel" out any data moving in the opposite direction  ..... Sorry, there is probably a more technical way to describe this phenomena in relation to gravatational forces, etc..

I have managed with simple threshold detection programming built in my Max patches over the years; or I have reverted to using a gyroscope, which is far more controllable for this type of application; however, it's always been quite delicate to find the precise thresholds to get the behaviour I want.

Recently, I noticed [dot.gesture.jab] in the DOT.  Is this a good start to help me?  

Any suggestions would be much appreciated.
Thx

[Joseph Malloch]

Hi Andrew,

Yes the [dot.gesture.jab] abstraction in the Digital Orchestra Toolbox was built specifically for detecting jabs from accelerometer data (for the T-Stick).

The gyro data cannot be used to detect linear accelerations.

Cheers,

Joe

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[d.andrew STEWART]

Thanks Joe. Will give [dot.gesture.jab] a try. RE: gyro.....it's true I never really described what I do with threshold detection and gyroscopes as "thrusts" . I never really found a good word in my various namespaces:   gyrate, spin,  baton, lasso ??.  In any case, gyro is excellent for creating triggered impulses (with rotation of course). I'll try to implement [dot.gesture.jab].......