SynthMaker

basic maths ommisions on float arrays

Archive · 2011 2 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

Curator_Ami ·

hi, i'm trying to implement a simple 3d scope for plotting Lissajous figures based upon audio demodulation. i'm stuck on the 'simple 3d' part. i need to scale the x,y values inversely to the z value, but there is no 'float array divide' element. you've got plus, minus and multiply. but no divide? there's not even a 'float array 1/x' element

this is a very basic ommision that should be corrected asap.

also, other exceptionally useful math functions for arrays would be; log, power, dot product, cross product, convolution.

thanks

Andrew J ·

Hi and welcome back to the forum Curator_Ami (long time between posts!). As a long time user you probably know this, but just in case...

If you want to divide the array by a single scalar value, then just invert it and use the multiply float array component.

If you want to divide one array by another, then you need to loop through the arrays, perform the division on a piecewise basis and store each result in another array. For an example of the technique, look at the Developer Toolkit sticky topic in the Registered Users forum. Inside the toolkit, go to arrays and then take a look inside "Multiply Pair" or "Saturation".

Performance won't be as good as a real component though, so +1 from me.

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