Tim Canfer

I am a relative newcomer, normally dabbling in MSP - in short I am trying to program a filled in area spectroscope - with option for log frequencies.

I have managed to get a passable scatter graph plot from the following patch, using a combination of pttf~ and jit.poke. Unfortunately I can't figure out a good method to join the dots, fill in the area (below, obviously!), and clear the window after each plot.

Please can someone help explain how I could do that - or if I have made any stupid patching mistakes so far?

I've attached the patch as an image, here is the patch and pfft~ subpatch called spec:

I am a relative newcomer, normally dabbling in MSP - in short I am trying to program a filled in area spectroscope - with option for log frequencies. 

jitter-spectroscope

did you search the forum for spectrosopce?

https://cycling74.com/forums/index.php?t=rview&th=31995

examples/jitter-examples/audio/jit.poke~-spectrogram.maxpat

did you search the forum for spectrosopce?
this thread comes up:https://cycling74.com/forums/index.php?t=rview&th=31995

how about the max browser?
examples/jitter-examples/audio/jit.poke~-spectrogram.maxpat


Yes, that post comes up via Jean-Francois Charles's reply to the "Spectroscope~ to Jitter window" - Unfortunately I don't have Max 4 (which I assume the compressed text is for).

As far as I can see in the examples so far are excellent demonstrations of time vs frequency spectrograms, which work well with the discontinuous data.

When I try to plot frequency vs amplitude (i.e. what I assume you'd call a spectroscope, or a spectrum analyzer in normal sound recording terms)- I get the patch above.

Clearing the window is not a problem (I have finally figured out that's just an edge detector on the bin output to a clear message.)

But the rest still eludes me - If Jean-Francois Charles's patch does answer any of these questions, please could someone put it in Max 5 format?

Many thanks - (and apologies in advanced if this turns out to be a blindingly obvious noob solution which I overlooked in Tutorial 1!!)

Yes, that post comes up via Jean-Francois Charles's reply to the "Spectroscope~ to Jitter window" - Unfortunately I don't have Max 4 (which I assume the compressed text is for). 

As far as I can see in the examples so far are excellent demonstrations of time vs frequency spectrograms, which work well with the discontinuous data. 

sorry, i'm not cognizant of the differences in terminology. 

however you can open max 4 patches in max 5. just copy and paste as you would max 5 text.

sorry, i'm not cognizant of the differences in terminology. 
however you can open max 4 patches in max 5.  just copy and paste as you would max 5 text.


Sorry - that was an attempt to clarify! - I was trying to express the difference between:

1. the a plot of amplitude on y axis and frequency on x, updated in realtime to show near current frequency content (what you see in spectroscope~) and 

2. time on y axis and frequency on x axis, with amplitude plotted as alpha intensity (what you see in the jit.poke~-spectrogram example in the bottom left pwindow)

There are several of 1, but I can't seem to work out how to create a decent looking version of 2.

Re. the compressed text, that will not paste with the text as it is at the moment - I can get it to copy from clipboard if I put ----------begin_max5_patcher----------, but that is just text. 

Looking into it, it should open Max 4 - but I cannot see why is isn't...

Anyway - thanks for your help and patience Rob!

Sorry - that was an attempt to clarify! - I was trying to express the difference between:
1. the a plot of amplitude on y axis and frequency on x, updated in realtime to show near current frequency content (what you see in spectroscope~) and 
2. time on y axis and frequency on x axis, with amplitude plotted as alpha intensity (what you see in the jit.poke~-spectrogram example in the bottom left pwindow)

Re. the compressed text, that will not paste with the text as it is at the moment - I can get it to copy from clipboard if I put ----------begin_max5_patcher----------, but that is just text. 
Looking into it, it should open Max 4 - but I cannot see why is isn't...

here is a a basic openGL spectroscope hacked out of another patch. The other patch does log freq, but i couldn't get it working properly here, however, i made some notes to give you a clue how to add it.

figured it out. here's a version with log freq

that's superb, thanks oli - I didn't think it would be as easy as I'd been hoping...

I assume that the pttf~ is something like:

This is all going toward a sexier version of sybil - I've kind of get distracted by the jitter side, but at least I managed to make my own triggering scope - although now I have to figure out how to apply that outline!

I have just realized in I've confused the axis on 2 and got mixed up in the following para - Obviously 2 should be freq on y and time on x. I should have said there are several of 2, but not 1.

(ahem) - sorry about that - need to proof my posts before I submit...

Tim Canfer wrote on Sat, 01 August 2009 02:53

I have just realized in I've confused the axis on 2 and got mixed up in the following para - Obviously 2 should be freq on y and time on x. I should have said there are several of 2, but not 1. 

Tim Canfer wrote on Sat, 01 August 2009 02:53
2. time on y axis and frequency on x axis, with amplitude plotted as alpha intensity (what you see in the jit.poke~-spectrogram example in the bottom left pwindow)

jitter spectroscope...?