Calculator for 1st reflection points

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poseidonsvoice

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Calculator for 1st reflection points
« on: 24 Nov 2015, 03:11 pm »
There are a lot out there (like Ethan Winer's, etc...), and some of us don't want to be bothered with using a mirror as our primary method of obtaining the 1st reflection points in a symmetrical room (non symmetrical rooms, I'm sure the mirror helps quite a bit); so here is a nice calculator that figures out all the 1st reflection points for you:

http://www.acoustic.ua/forms/calculator4.en.html

Just read and follow the instructions on the website.

Best,
Anand.

rodge827

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Re: Calculator for 1st reflection points
« Reply #1 on: 24 Nov 2015, 04:42 pm »
Anand,

Thank you for posting this! 8)
I had gotten close with the mirror but now my room sounds much better! :thumb:

Chris

Rob Babcock

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Re: Calculator for 1st reflection points
« Reply #2 on: 24 Nov 2015, 07:41 pm »
Great link! :thumb:

Big Red Machine

Re: Calculator for 1st reflection points
« Reply #3 on: 24 Nov 2015, 08:02 pm »
My first thought was that by the time you measured all the distances you could have found the spots with the mirror in less time! :lol:

Devil Doc

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Re: Calculator for 1st reflection points
« Reply #4 on: 24 Nov 2015, 08:13 pm »
Too much math and in the metric system, no less. My mirror works just fine.

Doc

poseidonsvoice

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Re: Calculator for 1st reflection points
« Reply #5 on: 24 Nov 2015, 09:09 pm »
Too much math and in the metric system, no less. My mirror works just fine.

Doc

There is no reason to use metric. You can input the numbers in feet/inches or cm/meters. I do it in inches, works fine.

Best,
Anand.

poseidonsvoice

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Re: Calculator for 1st reflection points
« Reply #6 on: 24 Nov 2015, 09:29 pm »
My first thought was that by the time you measured all the distances you could have found the spots with the mirror in less time! :lol:

Perhaps, but I've become more OCD in my old age  :thumb:

Best,
Anand.

brother love

Re: Calculator for 1st reflection points
« Reply #7 on: 24 Nov 2015, 10:55 pm »
Perhaps, but I've become more OCD in my old age  :thumb:

Best,
Anand.
If you are really OCD, you measure, then do the calculations to be absolutely sure! Of course, all results are in an Excel spreadsheet. :lol: [Disclaimer: I'm guilty as charged].

Thanks Anand. Both the Great Room Mode Calculator & 1st Reflection Points Calculator are very cool.


poseidonsvoice

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Re: Calculator for 1st reflection points
« Reply #8 on: 24 Nov 2015, 11:43 pm »
If you are really OCD, you measure, then do the calculations to be absolutely sure! Of course, all results are in an Excel spreadsheet. :lol: [Disclaimer: I'm guilty as charged].

Thanks Anand. Both the Great Room Mode Calculator & 1st Reflection Points Calculator are very cool.

I agree, and thank you  8)

Best,
Anand.

Big Red Machine

Re: Calculator for 1st reflection points
« Reply #9 on: 25 Nov 2015, 12:37 am »
Perhaps, but I've become more OCD in my old age  :thumb:

Best,
Anand.

I hear ya.

ted_b

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Re: Calculator for 1st reflection points
« Reply #10 on: 25 Nov 2015, 01:57 am »
I've always used this.  Works great.  Three measurements, simple math.




rodge827

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Re: Calculator for 1st reflection points
« Reply #11 on: 25 Nov 2015, 03:17 am »
There is no reason to use metric. You can input the numbers in feet/inches or cm/meters. I do it in inches, works fine.

Best,
Anand.

 :duh:
I measured inches and converted into cm!
It only took a few minuets longer, but the results were worth it. 8)
Using a mirror I got the first reflection point to the outside of the driver. What I didn't get with the mirror was the reflection point from the inside of the opposite driver. I had a 2'x2' area covered, and now it's 3'x2' placed horizontally.

Chris
 

poseidonsvoice

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Re: Calculator for 1st reflection points
« Reply #12 on: 25 Nov 2015, 03:50 am »
:duh:
I measured inches and converted into cm!
It only took a few minuets longer, but the results were worth it. 8)
Using a mirror I got the first reflection point to the outside of the driver. What I didn't get with the mirror was the reflection point from the inside of the opposite driver. I had a 2'x2' area covered, and now it's 3'x2' placed horizontally.

Chris

New converts. Just one at a time :green:

Best,
Anand.

undertowogt1

Re: Calculator for 1st reflection points
« Reply #13 on: 16 Oct 2019, 02:25 am »
There is no reason to use metric. You can input the numbers in feet/inches or cm/meters. I do it in inches, works fine.

Best,
Anand.
I just made some sound baffles and I am going to give this calculator a try. Do I just enter in INCHES?  I dont see where to change from cm to inches etc.?

poseidonsvoice

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Re: Calculator for 1st reflection points
« Reply #14 on: 16 Oct 2019, 12:26 pm »
Hi!

It doesn’t matter if it is inches, cm, or meters. It’s relative, because it is based on ratios. Just be consistent throughout the equation.

Best,
Anand.

undertowogt1

Re: Calculator for 1st reflection points
« Reply #15 on: 16 Oct 2019, 12:45 pm »
I see. Very cool. Thank you.

AudioDwebe

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Re: Calculator for 1st reflection points
« Reply #16 on: 21 Oct 2019, 12:30 am »
This is so very cool, and timely, as I get my other shipment of GIK 244s tomorrow.  The shipment was split and a few boxes arrived a week before the other.

Thanks.

timind

Re: Calculator for 1st reflection points
« Reply #17 on: 21 Oct 2019, 01:07 am »
Pretty cool the web page is still active; not often the case with a four-year-old link. Figuring all those angles reminds me of playing pool.