Dr. Spankenstein

I'm using peakamp~ to drive a display and unfortunately the numbers have to be scaled to be of any use to me. As such the sudden jump from one value to the next 50ms value from peakamp~ is quite noticable so I have tried smoothing the jump between the successive outputs using line.

The problem is that it doesnt seem to work so well and I was wondering if anyone has any advice?

I'm using peakamp~ to drive a display and unfortunately the numbers have to be scaled to be of any use to me.  As such the sudden jump from one value to the next 50ms value from peakamp~ is quite noticable so I have tried smoothing the jump between the successive outputs using line.  

smoothing-out-between-two-successive-numbers-peakamp-and-scale

instead of interpolating every n ms, try using a signal filter

instead of interpolating every n ms, try using a signal filter
such as slide~ or biquad~.


Forgive me for being ignorant but I'm not sure I follow you. I've not used slide~ before neither.

...I'll have a look at the help files though.

Forgive me for being ignorant but I'm not sure I follow you.  I've not used slide~ before neither.  

...I'll have a look at the help files though.


> I'm using peakamp~ to drive a display and unfortunately the numbers

> have to be scaled to be of any use to me. As such the sudden jump

> from one value to the next 50ms value from peakamp~ is quite

> noticable so I have tried smoothing the jump between the successive

Its not clear what you want to do with the amplitude value, when I read 

your question I thought you're controling audio, but all after peakamp~ 

is just plain Max. What does make it noticable? Maybe you want to atodb 

Rhys Perkins wrote:
> I'm using peakamp~ to drive a display and unfortunately the numbers
> have to be scaled to be of any use to me.  As such the sudden jump
> from one value to the next 50ms value from peakamp~ is quite
> noticable so I have tried smoothing the jump between the successive
> outputs using line.

Its not clear what you want to do with the amplitude value, when I read 
your question I thought you're controling audio, but all after peakamp~ 
is just plain Max. What does make it noticable? Maybe you want to atodb 
the output instead of scaling?

-- 
Stefan Tiedje------------x-------
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On 20-Feb-2007, at 0:58, Rhys Perkins wrote:

> I'm using peakamp~ to drive a display and unfortunately the numbers 

> have to be scaled to be of any use to me. As such the sudden jump 

> from one value to the next 50ms value from peakamp~ is quite 

> noticable so I have tried smoothing the jump between the successive 

Your patch is too complicated by half. See the right half of the 

For long-term smoothing, I generally use lp.stacey from the Litter 

Starter Pack (free download from the URI below). I've included use of 

Peter Castine +--> Litter Power & Litter Bundle for Jitter

Interface Building for |home | chez nous|

Max/MSP Extremely cool |bei uns | i nostri|

> I'm using peakamp~ to drive a display and unfortunately the numbers  
> have to be scaled to be of any use to me.  As such the sudden jump  
> from one value to the next 50ms value from peakamp~ is quite  
> noticable so I have tried smoothing the jump between the successive  
> outputs using line.

Your patch is too complicated by half. See the right half of the  
enclosed.

For long-term smoothing, I generally use lp.stacey from the Litter  
Starter Pack (free download from the URI below). I've included use of  
this in the following patch, too.

--------------    http://www.bek.no/~pcastine/Litter/    -------------
Peter Castine             +--> Litter Power & Litter Bundle for Jitter
                                Universal Binaries on the way
iCE:  Sequencing,  Recording &
       Interface  Building  for                   |home    | chez nous|
       Max/MSP   Extremely cool                   |bei uns |  i nostri|
       http://www.dspaudio.com/                   http://www.castine.de

Smoothing out between two successive numbers (peakamp~ and scale)