Hornresp - Page 207 - diyAudio
Go Back   Home > Forums > Loudspeakers > Subwoofers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st August 2011, 08:42 PM   #2061
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Screen dump.jpg

Very much appreciated Don

By the way the way you describe was the way I was doing it.

Less the "Turn off Draw Opaque in Paint". That I did not know.
__________________
Mark
  Reply With Quote
Old 2nd August 2011, 10:48 AM   #2062
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by Don Hills View Post
Make a second copy of the 3 Hornresp files in a different folder. (Hornresp.exe, Hornresp.dat, msvbm60.dll) You can then start both copies.

You will need to use import/export to keep the two copies of hornresp.dat in sync. Or you can make any changes you want to save in one copy, then exit both and copy the hornresp.dat from one to the other. Be careful and keep backups, sooner or later you will mess it up...

One thing I often do for comparing graphs in Hornresp is to use Paint, the basic image editor included in Windows.

- Produce a graph in Hornresp.
- Capture it to clipboard (Alt-PrintScreen).
- Start Paint, paste (Ctrl-C).
- Produce another graph in Hornresp.
- Capture it to clipboard (Alt-PrintScreen).
- Turn off Draw Opaque in Paint (Image --> Draw Opaque, untick.)
- Paste (Ctrl-c)
Could this be written into a little DOS routine?

How could that DOS program be called up by clicking on a windows icon " second Hornresp"
__________________
regards Andrew T.
  Reply With Quote
Old 2nd August 2011, 01:20 PM   #2063
tb46 is offline tb46  United States
diyAudio Member
 
Join Date: Jan 2006
Location: Texas
Hi,

Nice tip by Don. If you put it into a program make shure you use "CTRL-V" for pasting (CTRL-C is for copying).
You also can do this multiple times, so you can compare a number of e.g.: curves.

Regards,
__________________
Oliver
  Reply With Quote
Old 2nd August 2011, 02:39 PM   #2064
Kolbrek is offline Kolbrek  Norway
diyAudio Member
 
Kolbrek's Avatar
 
Join Date: Aug 2007
Quote:
Originally Posted by mwmkravchenko View Post
Can you download off of the AES site?
Yes, if you have e-library access you can download as much as you want. If you are not a member, you can purchase the articles one by one. If you need more than a few articles, it makes sense to pay for the e-lib access.

Quote:
Originally Posted by mwmkravchenko View Post
If some correlation between sound pressure and air particle velocity can be made, maybe we will have a useful tool in the design of horns and their physical dimensional aspect ratios. All these things add up to a better design if attention is paid to the correct details.
The correlation between particle velocity and pressure is impedance. Acoustic impedance is defined as pressure divided by (particle velocity times area). Note however that impedance is only defined as long as everything is linear.

Bjørn
  Reply With Quote
Old 2nd August 2011, 02:56 PM   #2065
GM is offline GM  United States
diyAudio Member
 
GM's Avatar
 
Join Date: Jun 2003
Location: Chamblee, Ga.
Quote:
Originally Posted by mwmkravchenko View Post
I hope that first off I can get an anemometer that will behave.

Second a proper high spl mike that will behave.
Seems like using vehicle manifold MAP sensors would be ideal for these types of measurements.

GM
__________________
Loud is Beautiful if it's Clean! As always though, the usual disclaimers apply to this post's contents.
  Reply With Quote
Old 2nd August 2011, 03:23 PM   #2066
Pano is offline Pano  United States
diyAudio Moderator
 
Pano's Avatar
 
Join Date: Oct 2004
Location: Milliways
Blog Entries: 4
Quote:
Originally Posted by Don Hills View Post
One thing I often do for comparing graphs in Hornresp is to use Paint, the basic image editor included in Windows.
I can highly recommend MWSnap3 for screen captures. Fast, free, easy to use and makes great captures in a small file size. I use it every day.
  Reply With Quote
Old 2nd August 2011, 05:53 PM   #2067
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Quote:
The correlation between particle velocity and pressure is impedance. Acoustic impedance is defined as pressure divided by (particle velocity times area). Note however that impedance is only defined as long as everything is linear.
Bjørn

Yep. What I meant is not only a theoretical understanding but the actual impedance versus change in horn aspect ratio or even horn total path surface area. Better stronger faster is what I'm after.

It seems that both things can make quite a difference in the outcome of a horns success.

GM

I think I have an even cheaper alternative.

Measurement specialties make some pretty inexpensive pressure transducers. They have to be able to measure very low pressures actually. And I am putting together an accelerometer to make insitu X-max measurements.
__________________
Mark
  Reply With Quote
Old 2nd August 2011, 06:01 PM   #2068
jbell is offline jbell  United States
diyAudio Member
 
Join Date: Apr 2003
Location: .
WAY off topic.... (apology)

Mark:
what organ is that on your computer background? I love the wood stop pulls vs something like the wannamaker.
Attached Images
File Type: jpg organ1.JPG (104.2 KB, 104 views)
  Reply With Quote
Old 2nd August 2011, 06:03 PM   #2069
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Weingarten Basilica.

First ever remote console tracker organ. A beauty to behold as well as listen to.
__________________
Mark
  Reply With Quote
Old 2nd August 2011, 06:53 PM   #2070
Mark Kravchenko --- www.kravchenko-audio.com
diyAudio Member
 
mwmkravchenko's Avatar
 
Join Date: Jan 2002
Location: Perth Canada
Actually don't like the sound of the Wannamaker much.
__________________
Mark
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Hornresp Class FlipC Subwoofers 8 3rd November 2008 06:23 PM
Some questions about hornresp brsanko Full Range 4 18th October 2008 09:36 PM
Hornresp help / JX150 316a Multi-Way 0 11th February 2004 03:56 PM


New To Site? Need Help?

All times are GMT. The time now is 10:23 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2