Some common acoustic myths.

Maybe you've heard of "Fake News"? The same happens in the world of acoustics! Here's a place for discussing acoustic myths, legends, mysteries, "questionable" treatment, scams, hoaxes, and just plain old bad information about acoustics, sound, and audio.
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Soundman2020
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Some common acoustic myths.

Postby Soundman2020 » Sun, 2020-Jan-12, 20:36

Here's an article from "Broadcast Engineering" magazine that I came across quite a few years ago (1992, to be exact), but it is still very valid today. It deals with a few of the most common myths about recording studio design, such as the "need" for angled glass in studio windows, as well as trying to use absorption for "soundproofing", the three-leaf isolation wall, and a few other good ones.

All of what it says was valid 30 years ago, and is still valid today:

Acoustical_Myths (1).pdf
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"Exposing acoustical myths" (from Broadcast Engineering magazine, 1992)

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bert stoltenborg
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Re: Some common acoustic myths and legends....

Postby bert stoltenborg » Wed, 2020-Jan-15, 14:26

1992! I was just born then! Well.....
And still we have to debunk these topics day in day out.

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Re: Some common acoustic myths and legends....

Postby Soundman2020 » Wed, 2020-Jan-15, 15:48

And still we have to debunk these topics day in day out.
:thu: And the myth machine never stops! It just keeps on running... :) :lol:

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Starlight
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Re: Some common acoustic myths and legends....

Postby Starlight » Wed, 2020-Jan-15, 21:12

What would you like to do here, Stuart: create a list of all the common myths and mistaken ideas (eg. egg boxes, 2cm pyramid foam, soundproof curtains) so that internet searches bring people here? Or, because you so far have attracted more methodical amateurs and a handful of professionals, perhaps a list of less obvious myths (eg. understanding NRC, RT60 in small rooms, decoupling v. dampening)? Or both?

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Re: Some common acoustic myths and legends....

Postby Soundman2020 » Wed, 2020-Jan-15, 21:57

Both! :)

Feel free to add whatever myths and "magical materials" that you come across, or already know of, each in it's own thread, so we can then discuss them if necessary. This includes all the things you mentioned as common myths, but also products that are equally mythical, such as ten-thousand dollar speaker cables, or tiny little wooden cubes that you set on your window sill to completely "fix" the room acoustics (yes, the really do exist!), or exotic wooden "cradles" that you absolutely must have to lift your power cables off the floor, so they don't pick up bad vibes. Even including the infamous "trapagon" that doesn't actually exist... and that famous plastic strip bubble vocal "booth"... All of that should be mentioned here, to help unsuspecting folks who are just starting out to stay clear of scams, hoaxes, and myths.

Ditto with "mysteries", such as the ones you mentioned (RT60, NRC, etc.). Even though the second set of subjects you mentioned are not really "myths", they certainly are "mysteries" to many people, so it makes sense to discuss them here too.

I'm also working on expanding the reference area to cover some of those (starting with "room in a room"), and what I might do later is, if there's a good explanation here about NRC, for example, then I might move it to the reference area, or maybe just cross-link it, so it can be found from both.

In fact, I'm going to update the forum info to add "mysteries" as well. It makes sense.

I'd like to keep each "myth" in it's own thread, directly under the "Fake Acoustics" forum header page, with a clear title, to make it easier to find them. So if you have half a dozen that you'd like to add, put each on in its own topic.


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