Hi Florent (CC Scilab Users) I cannot run the zcos model with my current Scilab 6.0.1 setup (and I haven't installed CPGE 1.6.3 either - is there a way you could simulate a loudspeaker without the need for CPGE??).
The bode plots you get is a function of the input + the loudspeaker model. We know that in principle the accelaration is equivalent to Loudspeaker Sound Pressure Level (SPL) response and it should show a flat area + roll off at both ends. I see that your plots don't do this. The velocity is like an integration and should "shift" (or "tilt") the response by 6 dB. The position is also like an integration and should further shift/tilt the reponse additionally 6 dB so that in the bandpass you get a 12 dB/octave slope. Your current loudspeaker model looks OK (I haven't dug into the details of each block), so my guess is - the output depends on the input. Now that you presumably have a working loudspeaker model - would it then maybe make sense to generate a very simple model - e.g. just a resistor (i.e. not a bandpass - but something that behaves from DC to lightning as a flat curve) - play around with the input and get it to behave correctly? Best regards, Claus On Sat, Mar 10, 2018 at 9:51 AM, Claus Futtrup <[email protected]> wrote: > Hi Florent > > Thank you for sharing your experiences with us. I don't speak but maybe > 100 words in French and can't string together a sentence (but maybe the > most elementary tourist-french). I looked up the CPGE in Atoms, but it > looks French to me... https://atoms.scilab.org/toolboxes/CPGE/1.6.3/ > > You give the result but no details to replicate, etc. I'm afraid I can't > help. > > Best regards, > Claus > > > On Fri, Mar 9, 2018 at 10:29 PM, Florent <[email protected]> > wrote: > >> Good morning, >> >> Here is an update of my "problem". >> >> First of all I had a problem of compatibility between Scilab/Xcos and the >> toolbox CPGE. >> >> Before I was using Scilab 6.0.1 and CPGE Version: 1.6.0. >> Now, with Scilab 5.4.1 and CPGE Version: 1.5.2, the Bode plot works. But >> it >> doesn't give the result expected... >> >> For the Displacement vs Frequency, a Low Pass behavior is expected. >> For the Velocity vs Frequency, a Band Pass behavior is expected. >> For the Acceleration vs Frequency, a High Pass behavior is expected >> (similar >> to the pressure response). >> >> And here is what is get: >> >> <http://mailinglists.scilab.org/file/t497760/bode_out.png> >> >> >> >> -- >> Sent from: http://mailinglists.scilab.org/Scilab-users-Mailing-Lists- >> Archives-f2602246.html >> _______________________________________________ >> users mailing list >> [email protected] >> http://lists.scilab.org/mailman/listinfo/users >> > >
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