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Posts Tagged ‘Solomon’s Temple’

Where are the Carboard Tubes

Posted by jdbsound on August 28, 2017

Churches use a lot of Cardboard Tubes in acoustical room fixes because they are very effective in getting the room performance they want and need.  Cardboard Tube not only outperform all other acoustical products in churches but they are also the most affordable.  There is nothing that can do what half round tubes can do, even at 40 times the cost.

Ok then, what if you don’t like the look of cardboard tubes around your worship space.  Here is an option some churches have been willing to spend a little extra for.

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These look like standard 5 inch deep absorbing panels.  They are not.  These are Sono Tubes mounted in a wooden frame and covered with cloth.

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The cloth was an added expense and it was worth it.  The fire rated cloth is expensive and before covering the panels, you want to make sure the acoustical system is going to work and work it did.  The church is very happy with the results and they are enjoying the room.

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This is what the installation looked like before it was covered.  The wooden frame has no effect on the performance of the half round tubes.  The cloth only affects frequencies above 10,000 Hertz which means they have no effect on speech or music.  In this installation three sizes of tubes were used.

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At the bottom is a huge video wall screen.  On the wall are the Sono Tubes.  Yes, the tubes will work behind a vinyl screen.  If you notice the pattern of the diffusers on the wall. that pattern was needed to control lower mids and bass sound energy.  This pattern was pretested in our test room.

northside church video wall

Here is the finished installation of the video system.  It takes three projectors for each screen.  The centre screen is a video wall.

Photos courtesy of Frederic Lachance of Northside Church in Coquitlam BC, 2017.

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Can Acoustical Spreadsheets Save Your Church Acoustics?

Posted by jdbsound on June 20, 2016

There are dozens of acoustical spreadsheets that come with the promise of a viable acoustical fix.  Some sheets are for studios and some are for home theatres.  There are also other spreadsheets for larger rooms.  As rooms get larger, (as in Christian Churches and worship centers) those spreadsheets become less accurate.  Sure, the better spreadsheets adds more variable to compensate for the limitations, but the limitations are still there. Furthermore, with all of the spreadsheets, you have to add an additional line to include a fudge factor.  In some spreadsheets you need to add multiple fudge factor lines.

When a person tries to use an acoustical spreadsheet, they are only looking at one parameter of the rooms acoustics.  You are only looking at “time.”  The problem is, for churches, and I MEAN ALL ROOMS WHERE MORE THAN 150 PEOPLE GATHER TO WORSHIP – there are other parameters that are equally or more important than “time.” Acoustical problems always come in layers.  The minimum number of layers of acoustical sound management in a worship space is 4 layers.  As a worship space becomes larger, the more layers you have to attend to.  “Time” becomes only a fraction of the real acoustical problems you are faced with.  Obviously you can’t see them but you can measure them if you are trained to recognize when you hear them.

Romanian Church Kitchener Ontario Pano 1.jpgThe problem with spreadsheets is that they are not looking issues such as standing waves – and every church – regardless of shape has standing waves (unless the space is acoustically managed in the first place which also means this article is not for you.)  Spreadsheets are not looking at excessive noise from early and late reflections.  They are not looking at bass buildup often found in the corners of a room.  They are not looking at flutter echoes and full syllable echoes.  These are all sound effects than can’t be dialed out with equalizers, delays, algorithms and the next miracle digital gadget or software. (Yet that is how most sound system designers try to deal with room acoustics.)

Regardless of a persons acoustical training, knowledge or experience,  a spreadsheet cannot tell you when standing waves are masking flutter echoes.  A spreadsheet cannot tell you when bass build up is masking a standing wave issue.  A spreadsheet can’t tell you how much the early and later reflections are reducing music and speech intelligibility. 

All that a spreadsheet can tell you is how much “time” it takes for a sound to decay in a room either as an average number.  Some spreadsheets are much more detailed and they have been written as an attempt to calculate a room in octaves or by 1/3rd octaves.  If it was only that easy.  Measuring and calculating time is just a sliver of the acoustical signature of a space people worship in. 

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It takes a lot of training to learn Church acoustics.  The same applies to Studio Acoustics, Recital Halls, Concert halls and lecture halls.  All of these rooms have specific acoustical needs and they all require a unique set of skills to properly fix them.   

What makes a church so complicated is in how a church is used.  When a church is designed as a “church,” it becomes the most multipurpose space there is because of all the ways a worship space is used.  When you say you want the worship space to be more “Multi-Purpose” or more flexible in it use, you are actually limiting what a basic worship space is supposed to be able to do. 

At the end of the day, an acoustical spreadsheet is only a small snapshot into church acoustics.  It can’t help with congregational singing, it can’t help with a noisy stage for a praise and worship team or choir and it can’t help with drum issues or speech intelligibility. 

What often happens is with the spreadsheet, it will guide you to a solution that is based on absorption.  When an acoustical fix is based around absorption, you wind up “killing” the room for all music – especially contemporary music and congregational singing – and the masking effects of the other acoustical issues get worse.  Sure, the room sounds more tame than it was before, but the ability to understand speech is either no better than before or it has gotten worse.  Before you know it, everyone gets in ear monitors and all of the members of the worship team have to sign an insurance liability waver stating that they will not sue the church for any future health problems with hearing loss.  Seriously, is that the kind of acoustical fix you want? 

Front view of creekside church_edited-1.jpgThat is what you get when you turn to an acoustical solution based only on spreadsheet calculations.  To top it all off, the results are not much better when using computer simulation software programs.  Simulation programs only show you the results at one frequency at a time.  The computer generated image may be 3D but the patterns they show are only one frequency at a time – even when it is averaged out.  To see large room acoustics in a simulation, you need to be able to see the results in 4D.  Hologram can’t show you 4D images.  That ability hasn’t been invented yet.  You need to be able to see sound in 4 dimensions because all sounds are complex.  Every sound made on earth is a combination of wave lengths that are generated at the same time. Some parts of a sound are measured in feet and some in inches.  There is no way to visually see 100 Hertz, which is 11 ft long, and 4000 Hertz which is 3.5 inches long, at the same time in the same place yet in real life, that is what is happening with sound.  We all take sound for granted but the complexity of sound is extensive.

But doesn’t sound follow the rules of fluid dynamic and other laws of physics?  Of course it does, but only when you examine one frequency at a time and that frequency is never a pure tone.  It is always complex.  The only place you can measure and see a pure tone is in a machine like an oscilloscope and the moment you launch that sound into the air, it becomes complex.  Just as sound is complex, so are the acoustical fixes for churches. 

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This is one way to test an acoustical solution before you recommend it to a church.  Have your own testing facility.  Whatever research is done in this room, it mathematical translates perfectly when it is scaled up into a larger space.

As a mantra, remember this:  for all Christian churches, acoustical problems come in layers and whatever fix you choose, it has to address all of the layers in one step – which is possible if you want an affordable fix.  There are many tools in the Acousticians Tool Box to fix a worship space. There are diffusers, resonators, traps and other devices that can address the needs of a church’s acoustics. There are also stand-alone electronic solutions that work in certain worship spaces. You need a lot of training to know which ones you need, what combinations you need and how to use them, and the last place you want to do your training and experimenting is on your customers. 

If you are doing Church Acoustics or trying to fix your own church, don’t do it as an experiment and you know it will be an experiment the moment someone in your committee say something like, “lets try this as see what happens.”  With those words, the acoustical solution is already doomed.  Experts like myself can tell you the results the second you decide to try something and long before you apply the materials. 

History shows that after a church spends it’s money on a thing such as acoustics, it will not be able to afford to fix any mistakes for decades.  If the results makes the room worse or no better than before, then you are subjecting the church members to more sound abuse for years to come and we don’t want that.  Spreadsheets don’t fix churches, good training and expert help does. (It’s also cheaper in the end to get expert help.)

Finally,  consider this.  The internet has become a treasure trove of knowledge.  That knowledge is often presented as expert information offering sure fire solutions.  I scan the internet often to see what is out there.  There is a lot of great information.  When you collect all of that info, it only holds a fraction of the total knowledge about church acoustics.  If we were to put a percentage on it, the internet holds about 2% of the total knowledge there is for church acoustics.  The books hold another 8% of what there is to know about church acoustics.  The other 90% of the knowledge about church acoustics is held by experts because the church community hasn’t taken ownership of that knowledge yet.  All church can have great acoustics and sound if they were to set-up for themselves “Church Sound Standards” that represents their style of worship.  Once a standard is set, every church will have a great Sanctuary for Worship everyone can enjoy and appreciate. 

Joseph De Buglio
Acoustician and Expert in Church Acoustics.

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Church Acoustics Advertising :-)

Posted by jdbsound on March 19, 2015

Do you have an echo problem?  We have a fix for that!

Do you have a reverberation problem?  We have a fix for that too!

Are you struggling with your sound system?  We have a fix for that as well!

Having problems with your rectangle shaped church?  We have a solution for that!

Having problems with you round church?  We have a fix for that!

Having problems with you octagon church?  We know how to fix those too!

Having problems with your fan-shaped, oval-shaped or square church?  We have custom solutions just for you!

Are you not happy with your commercial warehouse, storefront or converted mall space church?  We know how to fix that!

Have you already fixed your acoustics 9 times before and your still not happy?

We can fix any church that is absent of any acoustical planning and treatment.

We can also diagnose and fix any church that has the wrong acoustical treatment to get it back on track.

We have never been to a church that we couldn’t fix but we have had churches that were not ready to make the needed changes to get what they desperately wanted.  Oh, did you know that acoustics has always been the deciding factor in the aesthetics in a house of worship whether the acoustics are good or bad.  God taught us that beginning with Solomon’s Temple. (1 kings 6:29 (NIV)On the walls all around the temple, in both the inner and outer rooms, he carved cherubim, palm trees and open flowers.  (Please read my article about Solomon’s Temple http://www.jdbsound.com/art/art570.html))

Churches are not temples but they are dedicated as worship centers and houses of learning.  For worship and learning, you need tools. One of those tools is acoustics. You need a system of managing the air between the teacher and listener for the best worship and learning experience.  While a sound system is also a tool it cannot manage the air. It relies on acoustics for it to work. The better the acoustics, the more effective a sound system is.  Without the right acoustics, what are you really hearing or understanding?

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Quote of the Day

Posted by jdbsound on January 10, 2013

If experiencing poor sound in church could be measured as pain and people are not complaining about it, it could be because they don’t consider taking 10 extra strength pain killers per worship service as overdosing.

by Joseph De Buglio Jan 2013

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All Sound Systems are like magnifying glasses of the room acoustics

Posted by jdbsound on December 10, 2012

Is your sound system making the right impression?  Are the acoustics of your church allowing your sound system to make that great first, second and third impression at your church?

Once again the subject of getting more performance out of the next sound system upgrade keeps coming up. When a church is constantly seeking to get more performance out of a sound system at every upgrade and not be  enjoying the best sound possible then it’s time to fix the room instead of putting it off and investing into more equipment. This is the message your sound system is broadcasting.  Are you listening or are you waiting for the next technology breakthrough for that sliver of improvement?

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Calvary Worship Centre, Surrey, BC. Canada

Posted by jdbsound on November 9, 2012

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The acoustical system at Calvary Worship Centre is now about 95% complete.  The church hired me back to confirm the acoustical results and to finalize the sound system setup.  The Midas Pro2c Mixer and Danley Speaker system are a great match.

This is not the largest church to use this acoustical and sound system combination, but it is the largest church to change their acoustics in less than 30 days.  The fastest church repair was done in 7 days in Brentwood, England.  The largest Church I have worked on was 6500 seating.

A member of Living Hope Church in Surrey BC where they have been using the same acoustical system for over a year commented with saying Calvary has the same balance of sound as does Living Hope which is a modest 270 seat church.  Calvary Worship Centre can seat up to 2000.  That is remarkable considering that one place is built as a “proper” church and the other is a converted warehouse and both spaces perform the same.  (I was reminded that Living Hope Church thought they already had good acoustics but tried the Solomon system as a short term experiment.  The experiment turned it a permanent installation and the congregational singing and worship has never been more exciting.)

A Member of Calvary Worship Centre said, “The sound is far better than I dared hope for this 20,000 sq ft space given my previous church experience in a very similar venue.  Also, the total price was less than I expected it might be including your fees and the acoustic treatment.”

As one person mentioned at another church fixed with half round diffusers in Little Rock, Arkansas USA, he said, “you can tell if you have a good room by the number of people singing.  Before only about 20% of the audience was singing most of the time and for familiar hymns about 25% were singing.  Now it’s about 85% of the audience is singing all the time and you can hear the excitement and power of all those voices ring out.”  Imagine that – worship and excitement in the same sentence.

Click on the Photo to see the full size version.

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