Appreciated.

Can someone explain why in 'fixed point' one needs to limit the coefficients of the denominator?
While (I believe) that in floating point this is not needed?

Hi,

Many EQ's and filters use 2p2z (two pole two zero) IIR filters, just like in Flowstone's stock modules.
With the FS implementation I do not see any limitation on the maximum/minimum values of the coefficients.
However, I know that some DSP manufacturers limit their coefficients to (example ...

Martin hi - thanks for the clear explanation. It is much appreciated.

For "inside FS" - yes I saw that recombining the LF and HF parts had eliminated the phenomena.
I also understand that for FS this is not an issue due to increased dynamic range for processing ("can go over 1.000").

But this ...

According to the answers brought to us by Juha_tp (on other forum) - this phenomena is expected and is easily seen with square waves.

Let's assume this is true - so what is the remedy ? I mean if I use a digital domain cross-over with an HPF for the "tweeters" - do I need to add a limiter or ...

Hi,

For getting a LR4 (Linkwitz-Riley order 4) cross-over, one needs to use a Q factor of 0.5.
LR4 is the most common cross-over design, to the best of my knowledge. It is implemented in a zillion hifi-speakers, in analog (cross over of home speakers).

so, my surprise is that it is not straight ...

This is a generic phenomena which will occur on any implementation, not related to schematic or specific flowstone implementation.

However I have added a simple example of a 12dB (2nd order) HPF with known Biquads (tested) set for:
Cutoff = 1KHz
Q = 0.5
Sample_Rate = 48000

and a frequency response ...

Hi all,

I'm playing around with a digital cross-over design when I noticed that the HPF adds unwanted energy to the signal, making it go over 0dbFS.

I've designed a very simple LPF and HPF pair of filters to cut the frequency zones into two parts: LF and HF.
I've tested the HPF by injecting a ...

Hey there,

I got to a point in which I need to use a function:
Y = sqrt(x)
in which X is limited between [1:0].

Can this be optimized, by avoiding sqrt and instead using taylor/maclaurin approximations?
I guess those would reach 3rd order (to reach satsifactory precision) and some ...

Thanks Trogluddite and Tulamide - appreciated.
I'm looking into this...

Using Flowstone 3.0.8.1 I had built a schematic which loads a DLL file (written in C), from a specific location, and runs it.
The DLL is loaded by RUBY within the schematic, as explained in the user guide.

Within flowstone it runs as expected, but when I export it as EXE, there is no sound and it ...