Timothy Place

This edition of the Advanced Max series on FFTs is a swan dive off the high board - we’re going to use the Max SDK to create a pair of Max externals that will make FFT Processing easier. This 52-minute video will walk you through the development process for creating an object to normalize FFT values, and to convert FFT data from MSP signals to lists. Pull up a chair!

Since this video does the walkthrough using Xcode on a Macintosh, I've included a special bonus video for Windows users that details the differences in the development environment.

Learn how to use the Max SDK to create advanced tools for manipulating FFT data.

Advanced Max: FFTs, Part 5

Learn more about setting up the Max SDK in Windows Visual Studio.

Advanced Max: FFTs, Part 5 -  Windows Setup

This edition of the Advanced Max series on FFTs is a swan dive off the high board - we’re going to use the Max SDK to create a pair of Max externals that will make FFT Processing easier. This 52-minute video will walk you through the development process for creating an object to normalize FFT values, and to convert FFT data from MSP signals to lists. Pull up a chair!

Since this video does the walkthrough using Xcode on a Macintosh, I've included a special bonus video for Windows users that details the differences in the development environment. 

Download the package of source code, help patcher, and built externals for both platforms used in this tutorial.

All the tutorials in this series: Part 1, Part 2, Part 3, Part 4, Part 5, Part 6, Part 7.

CodeWindow.png

This edition of the Advanced Max series uses the Max SDK to create a pair of Max externals that will make FFT Processing easier. The 52-minute video will walk you through the development process. Pull up a chair!

fft-part-5

Great subject ! But nor help or reference features are working. I'm a beginner working on PC, and triggering the help file just start a frozen window with no interactivity...

Please could you provide a package available for both Mac and PC ?

Great subject ! But nor help or reference features are working. I'm  a beginner working on PC, and triggering the help file just start a frozen window with no interactivity...

I run on OSX 10.11.6, Max 7.3.3, Max SDK 7.3.3., Xcode 8.2.1. I follow your tutorial, simplemsp~ builds and loads fine, upon duplicating, changing name, managing scheme (remove old, add new) for fft.normalize~ I get the following: build succeeds and external features in the autocomplete (in Max's path in the Packages directory) but:

fft.normalize~: unable to load object bundle executable

Error loading /Users/***/Documents/Max 7/Packages/max-sdk7.3.3/externals/fft.normalize~.mxo/Contents/MacOS/fft.normalize~: dlopen(/Users/***/Documents/Max 7/Packages/max-sdk-7.3.3/externals/fft.normalize~.mxo/Contents/MacOS/fft.normalize~, 262): no suitable image found. Did find:

/Users/***/Documents/Max 7/Packages/max-sdk-7.3.3/externals/fft.normalize~.mxo/Contents/MacOS/fft.normalize~: mach-o, but wrong architecture

It's driving me bananas...any ideas? Yes, I did restart Max. Many thanks (any project in the SDK builds and loads fine)﻿

I run on OSX 10.11.6,  Max 7.3.3, Max SDK 7.3.3., Xcode 8.2.1. I follow your tutorial, simplemsp~ builds and loads fine, upon duplicating, changing name, managing scheme (remove old, add new) for fft.normalize~ I get the following: build succeeds and external features in the autocomplete (in Max's path in the Packages directory) but:  

fft.normalize~: unable to load object bundle executable  

Error loading /Users/***/Documents/Max 7/Packages/max-sdk7.3.3/externals/fft.normalize~.mxo/Contents/MacOS/fft.normalize~:  dlopen(/Users/***/Documents/Max 7/Packages/max-sdk-7.3.3/externals/fft.normalize~.mxo/Contents/MacOS/fft.normalize~, 262): no suitable image found.  Did find:  

 /Users/***/Documents/Max 7/Packages/max-sdk-7.3.3/externals/fft.normalize~.mxo/Contents/MacOS/fft.normalize~: mach-o, but wrong architecture 

 It's driving me bananas...any ideas? Yes, I did restart Max. Many thanks (any project in the SDK builds and loads fine)﻿

I discovered a bug in the code we wrote in the video. I just uploaded an updated version that fixes this bug. If you've downloaded previously you might want to re-download now.

 where we copy the imaginary output. Except in the video we were copying the real output to the imaginary instead of the imaginary. Oops!

You'll get to see me discover the bug in the next video in this series!

The bug was on line 162 of fft.list~.c where we copy the imaginary output. Except in the video we were copying the real output to the imaginary instead of the imaginary. Oops!

Just want to know which is the min-max range of phase values comin out of fft.list,in order to correctly visualize them on a multislider.

Hi Timothy,that's great.
Just want to know which is the min-max range of phase values comin out of fft.list,in order to correctly visualize them on a multislider.
Thanks for what you are doing


HAHAHAHA! "i am a robot, do what i say" XD

https://www.youtube.com/watch?v=nnn1U0HRWZU

(no disrespect meant to Mr. Place nor to his tutorial,

just pure admiration for his 'inlet/outlet-voiceover' acting skills :D)

HAHAHAHA! "i am a robot, do what i say" XD
https://www.youtube.com/watch?v=nnn1U0HRWZU 

(no disrespect meant to Mr. Place nor to his tutorial,
 just pure admiration for his 'inlet/outlet-voiceover' acting skills :D)

Trying to follow xcode example (years later!) - and running into problems. The simplemsp~ example does not work, and xcode is spitting out lots of warnings. Using xcode 10.1, and Max 8.1.5. Any possibility that someone has a max-sdk project file that works in this context? Or any other suggestions?

All and any,
Trying to follow xcode example (years later!) - and running into problems. The simplemsp~ example does not work, and xcode is spitting out lots of warnings. Using xcode 10.1, and Max 8.1.5.  Any possibility that someone has a max-sdk project file that works in this context? Or any other suggestions?

Well, in desperation I deleted the max-sdk (with the simplemsp~ example), and deleted any reference to it in xcode (argh). And started over. This time it worked. So, I can continue the the tutorial - but I'm left with an odd feeling - what did I do to make if now work? How would I have discovered my mistake? And, of course, what does it work not? Sigh. Not much help, to anyone reading the above message (years from now), but if you come up with the same problem, maybe the solution that I tried (eventually) will work for you.

Thank you very much for your very helpful videos.

I think I copied exactly what you have shown but the values coming out from real input are not resetting and always raising (along with multi slider lines).

Thank you very much for your kind attention!

fft.list~.xcodeproj.zip

Thank you very much for your very helpful videos.
I think I copied exactly what you have shown but the values coming out from real input are not resetting and always raising (along with multi slider lines).
What could be my fault?

is it possible that these externals are not working on max 8?

Hi, 
is it possible that these externals are not working on max 8?

the C code is basically the same, but the build/compile process is different now(and the externals in the package are outdated, yes: Timothy Place works elsewhere now, so it may be awhile before it gets updated), i think it's best to go here to understand the new way to build:

and from that page they also tell you to check this video out which serves a pretty helpful overview:

https://cycling74.com/articles/the-max-8-2-sdk-an-overview

the C code is basically the same, but the build/compile process is different now(and the externals in the package are outdated, yes: Timothy Place works elsewhere now, so it may be awhile before it gets updated), i think it's best to go here to understand the new way to build:
https://github.com/Cycling74/max-sdk

and from that page they also tell you to check this video out which serves a pretty helpful overview:
https://cycling74.com/articles/the-max-8-2-sdk-an-overview 

Hi, thank you so much for this tutorial. For who is interested I've made the porting of fft.normalize~ and fft.list~ for m1's (and later) Mac.

fft.list~.mxo.zip

fft.normalize~.mxo.zip

Hi, thank you so much for this tutorial. For who is interested I've made the porting of fft.normalize~ and fft.list~ for m1's (and later) Mac.
I hope this can help :)