Hornresp

BP1Fanatic · 2014-02-12 2:35 pm

zak1976 said:
Hi David,

since i have found your great pice of software, nearly all other loudspeaker calculators have gone to the recycle ...

Nowadays diplays with Full HD resolution are standard, I am missing the option to scale the graphs in Hornresp, the Hornresp window is very small compared to the diplay resolution. It would also be nice to specify a custom frequency range the it is easier to focus on the range which is important for subwoofer design.

Is there a chance to get these features in a further release of Hornresp?

+1!!!

tb46 · 2014-02-12 4:21 pm

Post #4196

Hi David,

Thanks for the lastest update.

Regards,

David McBean · 2014-02-13 7:36 am

Hi zak1976,

zak1976 said:
I am missing the option to scale the graphs in Hornresp, the Hornresp window is very small compared to the diplay resolution.

At this late stage in the evolution of Hornresp it would just be too much work to go back and modify everything to make the windows sizable. The formatting of controls has been carefully optimised to the current fixed window size - I would rather not change this.

Are you using the 125% magnification option with your display? I find that it makes the Hornresp window a nice convenient size on my 1600 x 900 pixel LCD monitor.

zak1976 said:
It would also be nice to specify a custom frequency range the it is easier to focus on the range which is important for subwoofer design.

This feature has been requested before - see link below. The answer remains the same

.

http://www.diyaudio.com/forums/subwoofers/119854-hornresp-296.html#post3239635

AkAbak of course, supports user-sizable windows and custom frequency ranges...

Kind regards,

David

zak1976 · 2014-02-13 9:45 am

What a pity, but still a great programm.

David McBean · 2014-02-16 6:12 am

Hornresp Update 3400-140216

Hi Everyone,

CHANGE 1

Slight modifications have been made to several of the Hornresp Help file descriptions.

CHANGE 2

A minor bug in the Data File Editor tool has been fixed.

Kind regards,

David

David McBean · 2014-03-02 6:06 am

Hornresp Update 3410-140302

Hi Everyone,

CHANGE 1

The combined response 'path length difference' parameter value is now saved as part of the Hornresp.dat file permanent data record.

CHANGE 2

The Sample tool slider range is now 1 - 20000Hz rather than 0 - 19999Hz.
The Pattern tool slider range is now 1 - 20000Hz rather than 0 - 20000Hz.

CHANGE 3

Minor amendments have been made to the Loudspeaker and Filter wizard descriptions in the Help file.

Kind regards,

David

nc535 · 2014-03-02 4:12 pm

Hi David:
The filter wizard is great as is but would be even better if there were
even just 1 PEQ term available in the active mode of the filter wizard; one each for LP and HP when doing bandpass.
Thanks,
Jack

Kravchenko_Audio · 2014-03-02 11:02 pm

Just downloaded it and will be playing....

Kravchenko_Audio · 2014-03-03 2:05 am

Been playing with the new stuff, and I likes it. I likes it a lot.

David McBean · 2014-03-03 6:18 am

nc535 said:
The filter wizard is great as is but would be even better if there were even just 1 PEQ term available in the active mode of the filter wizard; one each for LP and HP when doing bandpass.

Hi Jack,

If by PEQ you mean full parametric equalisation, then it's not going to happen

.

Allowing second and fourth order active filters to be specified using cutoff frequency and Q factor is about as far as I am prepared to go.

Kind regards,

David

GM · 2014-03-03 10:05 pm

Greets!

Set out to make a Metronome design tutorial using HR to post here: http://www.diyaudio.com/forums/full-range/252162-modelling-metronome-hornresp.html

When I convert this design done with MJK's MathCad software though, I get a ~45 Hz impedance dip Vs HR’s ~55 Hz [both with no damping], otherwise the resonant peaks/dips line up good enough for me:

L = 55"
SO = 5"^2
SL = 90"^2
zdriver = 30"
zport = 53.25" [actually exits out the bottom]
rport = 1.5" [3" dia.]
Lport = 2.5"

Note that it’s a conical expansion, i.e. no parallel walls.

TIA,

GM

David McBean · 2014-03-04 6:40 am

GM said:
When I convert this design done with MJK's MathCad software though, I get a ~45 Hz impedance dip Vs HR’s ~55 Hz [both with no damping]

Hi GM,

Both Hornresp and AkAbak show the dip at ~55Hz.

It would seem that the design being simulated in Martin King's software must differ in some way from the design being simulated in Hornresp and AkAbak.

Kind regards,

David

bjorno · 2014-03-04 3:18 pm

David McBean said:
Hi GM,

Both Hornresp and AkAbak show the dip at ~55Hz.

It would seem that the design being simulated in Martin King's software must differ in some way from the design being simulated in Hornresp and AkAbak.

Kind regards,

David

Hi David,

Agree...

b

kees52 · 2014-03-04 4:51 pm

Hi David

I did try to sim a BLH with a small 3.3 inch speaker, I did also try to include damping because this is common in a BLH to damp reflections, but when I try it it do nothing on the graph.

Maybe there is a problem there?

Software go really professional I see, congratulations for keep the simplicity also.

bjorno · 2014-03-04 6:34 pm

kees52 said:
Hi David...I did try to sim a BLH with a small 3.3 inch speaker, I did also try to include damping because this is common in a BLH to damp reflections, but when I try it it do nothing on the graph...Maybe there is a problem there?...

Hi Kees,

Maybe it's like often with HR..i.e.

not a big problem...

b

GM · 2014-03-04 11:51 pm

David McBean said:
Hi GM,

Both Hornresp and AkAbak show the dip at ~55Hz.

It would seem that the design being simulated in Martin King's software must differ in some way from the design being simulated in Hornresp and AkAbak.

Kind regards,

David

Greets!

Yeah, I got that far, but was wondering from the math used how the harmonic structure could line up with a ~10 Hz difference fundamental.

GM

David McBean · 2014-03-05 6:04 am

kees52 said:
I did try to sim a BLH with a small 3.3 inch speaker, I did also try to include damping because this is common in a BLH to damp reflections, but when I try it it do nothing on the graph.

Hi Kees,

Absorbent filling material can only be included in an offset driver or tapped horn Loudspeaker Wizard simulation. You will need to convert your backloaded horn to an equivalent offset driver configuration as shown by bjorno, if you wish to add damping to the horn.

I am currently looking at how much work would be involved in extending the Hornresp absorbent filling functionality to all horn types, not just offset driver and tapped horns.

Kind regards,

David

David McBean · 2014-03-05 7:03 am

GM said:
Yeah, I got that far, but was wondering from the math used how the harmonic structure could line up with a ~10 Hz difference fundamental.

Hi GM,

It seems to have something to do with how the design was modelled in the MJK software. As bjorno has shown, the MJK fundamental frequency moves much closer to the Hornresp result when the MJK model is changed.

Kind regards,

David

Flaesh · 2014-03-05 4:31 pm

Hi David,
special thanks for "Auto S2" :up:

David McBean · 2014-03-06 5:54 am

Flaesh said:
special thanks for "Auto S2"

Hi Flaesh,

You're welcome, I'm glad you like it

.

Kind regards,

David

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