Wilber

I am using a P5 glove ported from usb to MAX using open sound control to track X, Y and Z co-ordinates. However the numbers are kinda jerky.

I have created a patch that,using the LCD object, visually tracks the gloves position onscreen for live performance (i cant afford jitter! ) using the raw data from the P5 glove however it is etremely jittery.

I have managed to smooth it out slightly using 'speedlim' followed by a 'line' object however it is still quite jittery.

I intially created a gate that would block any numbers in the stream that weren't incremental/decremental by 1-3 steps, however this turned out to be a rubish idea as when i moved the glove too fast the gate just closed until i returned to the position at which the gate was last open.(to do with the sample rate of the glove-hardware issue)

i also tried buffering streams of numbers and analysing them for patterns to filter out "anomilous" results but this created too much of a time lag between moving the glove and seing it onscreen.

Does anyone know any good ways to smooth out a data stream in real time.

I intially created a gate that would block any numbers in the stream that weren't incremental/decremental by 1-3 steps, however this turned out to be a rubish idea as when i moved the glove too fast the gate just closed until i returned to the position at which the gate was last open.(to do with the sample rate of the glove-hardware issue) 

smoothing-a-data-stream-from-p5-glove

i have a p5, and I've found the slide object useful or smoothing.

On Oct 12, 2006, at 11:56 AM, WillChadwick wrote:

> I am using a P5 glove ported from usb to MAX using open sound 

> control to track X, Y and Z co-ordinates. However the numbers are 

> I have created a patch that,using the LCD object, visually tracks 

> the gloves position onscreen for live performance (i cant afford 

> jitter! ) using the raw data from the P5 glove however it is 

> I have managed to smooth it out slightly using 'speedlim' followed 

> by a 'line' object however it is still quite jittery.

> I intially created a gate that would block any numbers in the 

> stream that weren't incremental/decremental by 1-3 steps, however 

> this turned out to be a rubish idea as when i moved the glove too 

> fast the gate just closed until i returned to the position at which 

> the gate was last open.(to do with the sample rate of the glove- 

> Does anyone know any good ways to smooth out a data stream without 

>
> I am using a P5 glove ported from usb to MAX using open sound  
> control to track X, Y and Z co-ordinates. However the numbers are  
> kinda jerky.
>
> I have created a patch that,using the LCD object, visually tracks  
> the gloves position onscreen for live performance (i cant afford  
> jitter! ) using the raw data from the P5 glove however it is  
> etremely jittery.
>
> I have managed to smooth it out slightly using 'speedlim' followed  
> by a 'line' object however it is still quite jittery.
>
> I intially created a gate that would block any numbers in the  
> stream that weren't incremental/decremental by 1-3 steps, however  
> this turned out to be a rubish idea as when i moved the glove too  
> fast the gate just closed until i returned to the position at which  
> the gate was last open.(to do with the sample rate of the glove- 
> hardware issue)
>
> Does anyone know any good ways to smooth out a data stream without  
> creating a time lag?


> Does anyone know any good ways to smooth out a data stream in real time.

Taking a running average, but that adds latency.

lbyl is a cool object for exactly this purpose:

http://www.cnmat.berkeley.edu/MAX/downloads/

>
> Does anyone know any good ways to smooth out a data stream in real time.
>

Smoothing a data stream from p5 glove