Re: [EVGRAY] Re: loudspeaker cable pulse shaping

Body

Ole,

I was checking it out and everything looked super until I realized the
cost, wow $620 a year, is the express free version better than SMath for
simple electrical network engineering or do they limit the capabilities
too much in Express?

Apps have become so vast trying each one out can take days and days so
it's better to ask like minded people prior to investing the time then
finding out it does everything one needs except the final calc where one
derives the reactance of the part then asks one to buy the retail
version fro that function.  I hate when that happens.

On 7/20/2019 4:31 AM, [email protected] [EVGRAY] wrote:
>  
>
> Hi Mick,
>
> There is a Mathcad community where work sheets can be shared:
> https://community.ptc.com/t5/PTC-Mathcad/bd-p/PTCMathcad. There are
> also libraries with worksheets for different engineering disciplines.
> But it is easy to build your own calculation sheets. What I find very
> good in Mathcad is that the units are calculated automatic. If the
> units don't match there is something wrong in the formula. This adds
> some extra error catch. Mathcad can also calculate with imperial units
> besides the SI units and it's even possible to create customized units.
>
> I think Mathcad has become too expensive. For the annual license fee
> you can buy lots of physical calculators. Of course they're not as
> flexible as a Mathcad worksheet with its good overview. I still use
> the old Mathcad 15.0. It is locked to the computer but works without
> paying the annual fee of the modern versions. PTC that now owns
> Mathcad are quite expensive except if you make your living by using
> the software. Mathcad is very time saving when doing calculations and
> everything is documented if saving the worksheets.
>
> Regards
> Ole
>
>
>
> ---In [email protected], <mkjekyll@...> wrote :
>
> Hi Ole,
>
> Thank you, I was considering trying Mathcad or Cadabra or Axiom but
> now that you recommend it for sure!
>
> I seem to recall the Mathematica I used to use of a friend a long time
> back who was a math professor required about a 500 dollar add on for
> impedance and reactance network modeling, does Mathcad require
> additional packages also?
>
>
> On 7/19/2019 4:49 PM, onielsen@... <mailto:onielsen@...> [EVGRAY] wrote:
>
>>      
>>
>>     Hi Mick,
>>
>>     I use Mathcad as calculator. It has become too expensive and
>>     missing the animation ability so looking for an alternative.
>>     SMath Studio looks like Mathcad and is free
>>     (https://en.wikipedia.org/wiki/SMath_Studio). I like the
>>     animation function to simulate transmission line reflections and
>>     standing waves etc. It can also animate wave patterns like the
>>     force fields of the Rhythmodynamics theory. I actually haven't
>>     done those simulations much since discovering the Rhythmodynamics
>>     theory.
>>
>>     The formulas are written like done on paper. The program then
>>     calculates the formula and puts the result after the equal to sign.
>>
>>     Regards
>>     Ole
>>
>>
>>
>>     ---In [email protected] <mailto:[email protected]>,
>>     <mkjekyll@...> <mailto:mkjekyll@...> wrote :
>>
>>     Hi Ole,
>>
>>     I was looking around for my calculator for deriving pulse shaping
>>     networks and filters to use for loudspeakers and seem to have
>>     misplaced
>>     it in digital oblivion.
>>
>>     I am pretty sure you posted a circuit for same sometime back
>>     wherefore
>>     placing an inductive load close to the amp so was wondering if
>>     you can
>>     recommend a calculator. 
>>     A further complexity arises when adding a Zobel to the shaping
>>     inductor
>>     as the impedance becomes much more complex due to additional
>>     peaking and
>>     added IM distortion but that's another story and as we all know
>>     electronic design is always a compromise.
>>
>>     Thanks,
>>
>>     Mick
>
>