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Old 16th September 2011, 06:25 AM   #2281
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Default Hornresp Update

Hi Everyone,

The Loudspeaker Wizard tool chart frequency range can now be toggled between 10 - 2000 hertz and 100 - 20000 hertz by double-clicking on the X-axis "Frequency (hertz)" label. My thanks to Mike for suggesting this enhancement.

The latest Hornresp release is Product Number 2870-110916.

Kind regards,

David
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Old 17th September 2011, 11:37 AM   #2282
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Quote:
The Loudspeaker Wizard tool chart frequency range
Hi David,

Must have missunderstood. Canīt make it work. Give me a hint.
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Old 18th September 2011, 03:40 AM   #2283
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Originally Posted by revintage View Post
Must have missunderstood. Canīt make it work. Give me a hint.
Hi Lars,

Display any one of the Loudspeaker Wizard charts and then move the mouse pointer over the "Frequency (hertz)" label beneath the chart. The font colour should change from black to red to indicate that the label has been activated. Now double-click on the red label, and the chart frequency range should change.

The screenprint below shows the response chart with the frequency range changed to 100 - 20000 hertz. (The impedance and displacement chart ranges are also changed automatically).

Could you please confirm that the functionality works as described above. Thanks.

Kind regards,

David
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File Type: png Range.png (22.7 KB, 262 views)
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Old 18th September 2011, 09:15 AM   #2284
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Aha, didnīt know it even existed. Probably because Iīve never simmed an exp, par or con. Could be interesting to try though, when making a suboptimal Hypex basshorn of conical sections.
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Old 11th October 2011, 03:33 AM   #2285
NEO Dan is offline NEO Dan  United States
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Hi David,
I've been "testing" 2870-111007
Looks like sometimes I have to go back and forth between records, re-plotting to get the compare feature working for System Efficiency, Sound Pressure, and Particle Velocity. The compare text in the button appears in grey intermittently/randomly...annoyingly

Still love Hornresp though, thanks David!
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Old 11th October 2011, 03:42 AM   #2286
tb46 is offline tb46  United States
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Default Sensitivity of Phase Response Plot

Hi David,

I may have found another minor bug (Version 2870-111003). The sensitivity of the phase screen plot seems to need a little tuning, this is especially obvious on vented (bass reflex) enclosures, or so it seems. I found a particularly nasty looking one, I'm attaching a screen plot of the phase response with the default delay (you have to go to delay=0.0msec before the excessive "wrapping?" goes away) and the Hornresp export file.

Regards,
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File Type: jpg auda3_br_phase.jpg (45.1 KB, 171 views)
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File Type: txt auda3_br.txt (436 Bytes, 5 views)
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Old 11th October 2011, 07:49 AM   #2287
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Quote:
Originally Posted by NEO Dan View Post
Looks like sometimes I have to go back and forth between records, re-plotting to get the compare feature working for System Efficiency, Sound Pressure, and Particle Velocity. The compare text in the button appears in grey intermittently/randomly
Hi Dan,

The System Efficiency, Sound Pressure and Particle Velocity charts are generated when the tools are selected, not when the Calculate button is pressed. For this reason comparisons can only be made against previously displayed or captured charts.

Note that this operation is different to that of the main default charts, which are all calculated even when not displayed.

Kind regards,

David
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Old 11th October 2011, 08:07 AM   #2288
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Originally Posted by tb46 View Post
I may have found another minor bug (Version 2870-111003). The sensitivity of the phase screen plot seems to need a little tuning, this is especially obvious on vented (bass reflex) enclosures, or so it seems. I found a particularly nasty looking one, I'm attaching a screen plot of the phase response with the default delay (you have to go to delay=0.0msec before the excessive "wrapping?" goes away) and the Hornresp export file.
Hi Oliver,

Thanks for this feedback. I had noticed the same thing myself, but never got around to investigating it - I had assumed that the phase of the combined signal would be pretty weird anyway :-). It is interesting that changing the path length difference from 0 cm to 1 cm tidies things up considerably.

I will have a look and see what I can find - at this stage, I am not really sure where to begin though :-).

Kind regards,

David
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Old 11th October 2011, 02:12 PM   #2289
tb46 is offline tb46  United States
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Default Post #2288

Hi David,

Yes, changing the path length tidies things up considerably, hadn't noticed that.

Regards,
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Old 11th October 2011, 02:17 PM   #2290
Mark Kravchenko --- www.kravchenko-audio.com
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Hello David.

I have been fooling around with some vented subwoofer designs. I think there may be something amiss in the vent air speed velocity calculation. When I increase voltage input the velocity does not increase accordingly.
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