"Been a few years since I last posted here I think, but I've recently moved house into a
new flat with my girlfriend and set up all my equipment in the spare room and have noticed
that the low frequencies are very "boomy" for lack of a better word, perhaps some standing
waves causing this, I don't know?"
It is all kinds of reasons, but most
of the boom comes from the low end decay that, for the most part is more harmful then
The following is from a article I did a few months back. The
following talks about decay times.
Before we move
on to your next set of tests, here is a little background on decay times and waterfall
graphs and why they are so important to view (if not more important then frequency
response). As a sound plays through your speakers it doesn't just get to you and stop
but continues to bounce around the room and slowly fades away over time. This is
sometimes referred to by others as ringing or reverb. A waterfall graph allows you to
visualize how quickly or slowly a given frequency decays over time.
frequencies tend to be stronger and stay more intense longer than higher frequencies.
Higher frequencies are also easier to control. Things like people, furniture, carpet,
curtains, and even air tend to have a much more significant impact on the higher
frequencies than lower ones. In addition, high frequencies are much more directional
where low frequencies tend to spread like a sphere in 3 dimensions. In a bare room, there
really isn't much that has any significant impact on low frequencies which is why it is
critical to have proper bass trapping . As the low end keeps bouncing around the room
there are other things that you are trying to hear but the frequencies that are ringing
are masking imaging cues, harmonic textures, and even cancelling and/or reinforcing
When someone refers to a room that sounds "tight" or "clear" they
are most likely in a room that the low end decay times are under control with bass
though what you need to do is make sure you are sitting facing the short wall in the room
and have plenty of bass trapping in the room. The following are a few things to help you
understand room acoustics a bit more. After you post some pictures we can give you a bit
more info about where to start off sitting and placement of acoustic in the room.http://www.gikacoustics.com/video_basics.htmlhttp://www.gikacoustics.com/news_081610.html
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