A question about rooms and getting a flat response

[rAC]

With an imminent reshuffle of where my music equipment is I thought I might get a little more serious about checking my room acoustics/speaker combination.

To that end I was thinking that a test tone that sweeps 20 -20K put through my system and then recorded would give me a good idea about where my room is less than ideal. Does anyone know where to get such a test tone or is it easy enough to program with something in Logic?

Also I’d like to know am I misleading myself by pursuing this course of action?

[denitronik]

Google « room eq wizard » REW (sorry I don’t have the url right now). It also has a room simulation app where you can change the placement of your speakers and your listening position. 

[rAC]

@denitronik thanks for that - I will persist with google the first two pages of my searching  just gave me stuff to buy. I think you may have given me enough to refine it to get results that are relevant.

[rAC]

PS the way things are, unless we move because we’ve won a lottery, the Speakers are pretty much fixed (maybe 10cm or so either way) and the listening position is fixed - when the rearrangement occurs.

[David Nahmani]

6 hours ago, rAC said:

Does anyone know where to get such a test tone or is it easy enough to program with something in Logic?

Easy enough in Logic, actually nothing to program! Just open a Test Oscillator plug-in, click the Sine Sweep tab, and then click the Trigger +1 button to start the sweep. 

3 hours ago, rAC said:

PS the way things are, unless we move because we’ve won a lottery, the Speakers are pretty much fixed (maybe 10cm or so either way) and the listening position is fixed - when the rearrangement occurs.

Finding the correct speaker and listening positions are actually crucial to a good room listening experience so don't disregard it altogether. 

Otherwise what's the shape of the room? Windows, doors? What kind of flooring? 

Generally you'll want to start with positioning bass traps in priority, in every 3-corner first. Bass frequencies are the most challenging to treat in a small room. 

If you've heard about the 20/80 rule... 20% of the work gives you 80% of the result, then the remaining 80% of the work give you only the remaining 20% of the result... then putting bass traps in your room corners is your 20% work that will yield 80% of the result you're looking for. 

[denitronik]

Here is the url https://www.roomeqwizard.com

It's a great app if you're interested in acoustics but you need to calibrate your system and there is some learning to be done.

[Holger Lagerfeldt]

REW, as denitronik mentions, is one way of getting to understand what's actually happening in your room. You need a matched/calibrated microphone to not color the results too much.

Dimensions, building materials, and real acoustic treatment (as in not foam, for instance) will make the biggest difference, apart from speakers and speaker placement relative to your listening position.

After that, I recommend you look at Trinnov:
https://www.trinnov.com/en/products/nova/