The Room Acoustics Calculator – Precise Results

If your looking for an acoustically sound room for mixing, recording, engineering or just listening to the hi-fi surround sound system, you need a room acoustic calculator to help you make decisions on what type of sound treatments your room is going to need.   Different rooms require different treatments, this can all be figured out basically by starting to work with a room acoustical calculator.

What is a room acoustic calculator?  Room acoustics calculators help you determine how many sabins you will need to add to your room to get the results you desire.  These calculators can help you see what downfalls in the frequency range your room may have.   You may find that certain rooms have a boomy 60hz boost while dropping quite a bit at 100hz.  Some rooms drop 5k and above while dropping the low end frequencies as well.   The only way to really know what type of sound eq correction your going to need in your room is by using a room acoustic calculator.

The reverb or room frequency calculators are pretty straight forward to use.  In most cases you enter the measurements of the room and make sure you specify that the room is measured in feet or meters.  You can select what type of wall materials and flooring materials are present in the room and any objects and the amount of objects.  You will then be given a result that will allow you to make a sound deadening or insulation choice based on those calculations.  Obviously these calculations are going to be more important and more dramatic in a smaller room say 12X12 feet as compared to a major concert hall.  But this is just the reason you need the room acoustics calculators, to get an idea of what you can do with an office space, basement space etc.

You can find a lot of the room acoustic calculators online and available for free using javascript.  Some of the terms you may find when using these room calculator softwares are:

  1. Axial
  2. Tangential
  3. Oblique
  4. Room Modes
  5. Phase delay
  6. Phase wrap
  7. Impulse response delay
  8. Sound exposure level
  9. Sound Level meter

Some of the simpler calculators will give you the axial, tangential and blique room type modes for simple rectangular rooms that have a symmetrical construction.

While room acoustic calculators and response calculators are great, they are not the end all methods for tuning your room to match a certain frequency range.  The  sound samples are taken at one point in the room, and the problem with that is, even slight movements in room position will greatly increase the equalization changes.   Mostly you will notice that its the high frequency response that will dramatically very over very short distances aka within as short a space as one meter.  The bass frequencies take a little bit longer to mature.

Even with the small drawback of changing frequency conditions, a room acoustic calculator can you get extremely close to being where you want to be.

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