Recent content by luegotelodigo

Yes, that simplifies the calculations a lot. I shared an easy approach just to help in take some decisions. The aim is not being accurate. Yes, REW allows you to use different coefficients for every pair of surfaces BUT it doesn't allow you tu use different coefficients for different...

That does not question the theory. In fact, that's how diaphragmatic bass traps work. I've designed several studios and by tuning gypsum walls to the frequencies of interest I have avoided the need for expensive traps. At home I have to put several resonators and I still don't achieve the EBU...

OK, in the image attached you can see the dimensions of my room (6.13*3.34*2.47) meters Also the RT averaged graph. T30@63Hz=0.87 s The easiest assumption is all the surfaces in the room have the same alpha (but after that, if you have bass-traps can improve it). So I have a room of 50.6 m^3...

Thanks again and my apologies... my screen didn't get so low :D

Yes, that's what I did but to get a 48 dB/oct hi-pass the only option I have is to add several HP filters

I've been using a different approach to set the absorption in room simulator. Rather than chosing theoretical alphas I estimate them with the Sabine equation and the measured RT. I can provide a longer explanation if needed.

I can't find that option so it's probably not possible. I'd like to use it with clean anechoic measurements: Set a target curve that fits the Hi-Pass of the loudspeaker, divide the anechoic response by the target curve and export this as a WAV IR that I would use to fix magnitude and phase by...

I know I'm replying after a long time but I tried an omnitronic mic and tested great. It is a good choice for room measurements.

We bought one to train students and works nice for the price

While I admit multiple mic measurements is something I would appreciate; I'd like to remind the use of multiple mics is a source of uncertainties (because they don't measure the same) and I don't get the point of worrying because of a point you can't find to measure again.

You can create a notch filter based on the peak you want to remove and convolve it with your recording (if I understood the problem right)

What room sim displays now is also SBIR based in easy assumptions. What you want is the same but calculated with a number of reflections. What I understood is you want to use it for low frequency tuned absorbers... 1) They are reactive, and most of users don't know their acoustic impedance 2)...

I think SBIR calculated by the image-source method for low order reflections is not so useful for different reasons depending on frequency but the right surface absorption coefficient helps improving the results a lot. That coefficient can be estimated from RT or alfa Sabine and Volume and...

I can't make it work using 5,20 beta 1 on Win7

I have some colleagues developing limitters for pubs and discos and they bought lots of cheap mics this year and I tested them, the pair of ECM 8000 were quite good. I've also checked a lot of friends' 8000 just buy FF comparison in a coincident place and only one was too bad. Avoid high...