Need help - Reduce noise in greenhouse wedding venue

Hi everyone,

I'm new here, so apologies if I'm framing this in the wrong way or posting in the wrong forum.

Hopefully about to get married next year and we found this fantastic venue. They have a large outdoor greenhouse of 7x14 meters (22'11" x 45'11") just by the water, that seats 100+ people.

Now, we talked to some other friends who just attended a wedding there, they said everything was great except very loud noise level in the greenhouse, could barely hear your neighbour across the table. From what I hear, glass is the worst offender when it comes to sound reflection, which is kind of worrying.

Need some help/ideas what measures can be taken here to reduce the noise level, while keeping it wedding appropriate? My own ideas so far involve hanging white heavy fabrics across the ceiling, and some type of curtains in the corners perhaps. Not sure how much it would help. Appreciate any pointers.

Attached a partial photo of the greenhouse I found in the venue gallery (backside is facing rocks, could possibly be covered by curtains).

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Discuss with the venue owners.
It would seem from what you describe it is in their interest to provide a long term solution.
Feedback (on the feedback) should be very persuasive.
They have some months to implement.
I experienced similar in a local Italian restaurant, marble floors & walls: Never went back.
 
Vertical baffles hanging from the ceiling will be most effective, I think. Baffles as in: sheets of sound absorbing material (melamine foam or covered mineral wool preferably because of fire hazard). They’ll need quite some of them, so it’s an investment. I had a close look at the ceiling: amazing the owner didn’t already address this issue, I’m sceptic about your chances to convince him (or her).
 
Such a romantic look.
I have been filling my livings spaces with
similar drapes. Dont like flat walls.

The glass surfaces are very reflective. much like
a tile bathroom. In large reflective rooms yes absolutely
" speech" when amplified can become very un clear from reflections.

Luckily in your case being this is a actual wedding.
The romantic styled drapes are accepted.
Been telling " audiophiles" for years that basic drapes
fix rooms well.

The difference is very light fabric is used for wedding drapes
so if a heavier drape is possible.
Ceiling and floor are largest surface.
So carpet might not be a option on the floor.
Upside down or not, sound doesnt care.
So at least the ceiling can be heavy with drapes.
Since floor and ceiling is your largest area.

Less spacing between drapes have the ceiling fully draped in.
and have simple drape designs in the corners.

Whatever direction the wedding speakers are pointing
for sound and speech. Make the longest distance rear wall a heavy
multi layer drape design. Even include large trees or plants. vines etc etc.

For example this room has no spacing fully draped ceiling.
Which looks ok. Consider that your first layer.
Trying to block and cover all the reflective ceiling glass.
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Then add second layer for pattern and open spaces.
Such as the typical more open pattern look and vines.
Its nice to use white for the full drape, then the second accent
layer be different color drape.

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For the longest distance wall the speakers are facing
do a very heavy pattern multilayer.
Basically the longest delay time, reflection. Is what really blurs speech.
A short delay is pleasant to some, but very long delays is what blurs speech
and with music low frequency becomes very blurry.
People often enjoy the sound of their voices when amplified
and tend to really turn up the bass.
Do the opposite, keep the speech microphones with less
bass. Dont heavily fill your voices with low frequency.
This is another common factor and mistake made.

Other than that as mentioned the long delay time for high frequency
will also blur speech. So try to heavily drape the furthest wall from speakers.
Corner spaces never really used. It is easy to add a lot of drapes even large trees
in corners. which does not remove much floor space.
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I feel for you @hamohl

That's about the worst acoustic environment I've seen for anything!

in my experience dealing with weddings the acoustics needs of the DJ are around number 30 on a scale of 1-10 most important things according to the bride ;) and her mother ;) ;)

They chose the venue because they love the views. If you claim to need a draping temporary "ceiling" of the sort used in proms (and this needs to be FAR, FAR heavier than tissue paper!) you may well be fired. After all they chose a "greenhouse" to somehow bring an "outdoor wedding indoors."

My firmest advice to you is to physically disconnect every tweeter that you cannot absolutely isolate via a dedicated amplifier. Test that way. Then add a touch of scintillation via a small number (perhaps only one) satellite type unit with dome tweeter directed upwards and diagonally into a high [glass] corner. Distribute your general loudspeakers as widely as possible and experiment with all sorts of positioning to include directed down towards the floor.
 
He’s the groom. Anyway, the roof seems of the foldaway type. That reduces possibilities. Making not too much noise is one of them. But my bet is all kinds of acoustic stuff on the roof is best. And quite a challenge for (just) one wedding.
Are you or your firm also doing the decoration? It's an attractive venue and I'd first try to get reasonable sound before suggesting theme-worthy acoustic tuning "decorations."
 
Most of the greenhouses I am familiar with have windows at the top that can move a bit to vent excess heat, as already mentioned. Open that would effectively be a perfect sound absorber.

As people probably prefer a lower temperature than the plants…

So you might want to try calculating the reverb time.