Sascha

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Apr 30	comment	Fourier transform of sampled data The issue is that my actual data has a sample frequency of 48000Hz and that I can't find any option to tell `Fourier` that.
Apr 30	comment	Fourier transform of sampled data Figured that as well just this instant. The only issue is still to incorporate the sampling frequency when using `Fourier`. I will change the question accordingly.
Apr 24	comment	Issue with ListDensityPlot when using logarithmic scale Added another download link that hopefully does the trick.
Apr 24	comment	Issue with ListDensityPlot when using logarithmic scale 1-click-hoster aren't what they were used to be anymore... until I find another one that actually works you can try dl.dropboxusercontent.com/u/74966785/SaschaData.zip
Mar 21	comment	Only perform a symbolic differentiation once Have you tried to create a non global variable inside your function that stores the derivative? You could then use replacement rules to call upon the derivative.
Mar 21	comment	Export to pdf from Mathematica using Greek characters I recommend using .eps whenever possible
Mar 21	comment	Graphical representation of a moving sound source unfortunately they want a .pdf-file and I suspect just for the sake of printing it on top of that. (And I currently don't know if the hassle of getting 3D data from Mathematica to .pdf is worth the hassle anyway, meaning that I suspect there to be some kind of quality issue, color, aliasing etc.)
Mar 21	comment	Graphical representation of a moving sound source I added a picture of the microphone arrangement. I guess they are pretty directional just due to their form factor:)
Mar 21	comment	Graphical representation of a moving sound source Looking at your graphic I came to think it would be awesome for actual presentation to print a banner with the data in 2D and then wrap it up to get a cylinder barrel of paper much like your plot. You could then stick your head in the ring and view the data in relation to its actual physical position. Sad that I don't have to present it though (it's only a report to be handed in) :)
Mar 20	comment	Graphical representation of a moving sound source I am sorry but I have to disappoint you, it's rather far off. They were just a few centimetres apart, but as illustrated in the sketch above they are positioned with a 90° offset. I have a second .wav- file obtained with a KEMAR dummy-head that I will post tomorrow if that is deemed interesting. There the amplitude difference is not as characterising as in the measurement with two standard microphones. However the time lag is more apparent as far as I can tell from just looking at it (didn't try your plot on it yet).
Mar 20	comment	Graphical representation of a moving sound source What Stefan means is that one fails to fine a definition of `corr` when looking at your code.
Mar 20	comment	Graphical representation of a moving sound source I found the error, there was some conflict between several files I had in the same folder.
Mar 20	comment	Graphical representation of a moving sound source If I run your code on my machine, your result isn't reproduced, any idea why that could be?
Mar 20	comment	Graphical representation of a moving sound source That is a really nice idea:)
Mar 19	comment	Graphical representation of a moving sound source I created my downsampled data by using the posted function `dropfunction` (with n= 7) on the uploaded .wav-file (or as Yves Klett suggested by using Part)
Mar 19	comment	Graphical representation of a moving sound source Do you have any idea how to change the `Ticks` or `FrameTicks`so that they show only a absolute distance from 0 instead of +/- ?
Dec 4	comment	Notebook function formatting Personally I see no issue with Mathematica code not looking like C or some other language. I rather enjoy that it doesn't necessarily look that way.
Dec 2	comment	What is Mathematica's equivalent to MATLAB's Simulink? @WalkingRandomly - and no one can blame them doing so, since object based modeling turns out becoming more and more popular in a lot use cases. However, I would not suggest it to someone really comfortable with Simulink, especially not when working with e.g. signal-proceccing, control theory or the like. (While the capabilities of Mathematica in both mentioned fields are rather nice indeed - Version 9 looks even more promising with build-in functions like `PIDTune`)
Dec 2	comment	How to set default save directory for notebooks? @John Fultz I am glad that Mathematica integrates so nicely with OSX. In my opinion it is a elemental feature of OSX that usage of system wide GUI-logic is encouraged and that most programmes out there play within the 'rules'. Examples where custom interfaces are used (e.g. ditching the top menu bar of OSX - like Matlab does) turn out pretty bad in like 99% of the time and just ruin user experience.
Dec 2	comment	What is Mathematica's equivalent to MATLAB's Simulink? You can't really compare SystemModeler and Simulink because the latter is based on transfer-function models and SystemModeler uses the object oriented modeling- language Modelica. Sure you can simulate a lot of systems in both packages, but the process of doing so is nothing alike. Furthermore Modelica is suitable to simulate multidomain problems (including e.g. thermal systems).