Recent content by mojozoom

What causes the time delay? Is it something that is truly occurring or something we see in the measurement due to the way we take measurements? If I took a series of measurements on a driver starting up close and kept increasing the distance would I see the phase curve start flat and slope...

I also would rather use sweeps for measurement in the car but find that it's just not consistent enough in the upper frequency range. The comb in a car is just vicious - if you move the mic even a fraction of an inch you get very different results. Taking a bunch of sweeps with different mic...

Here's a question I'm trying to get a handle on: What makes the phase curve of the mids in my car slope continuously downward when measured at the listening position? I dug up an old test I did near field (maybe 3" away from the cone) with the car door open and the phase curve was very flat...

Just to wrap this up, I've figured it out and it's entirely on me. REW does exactly what it should and can easily be used to model two AP filters in series by plopping the values for both into the EQ filters window at the same time. The trick in the analog circuit implementation is that I have...

John, I was kind of struggling in getting REW to allow me to apply another AP filter to the "A times B" data. Even though I would highlight the "A times B" tab, when I clicked on EQ it would take me to the EQ for the impulse filters I had imported. Once I deleted the tab with the impulse...

Hi John, thanks for the reply. I'm trying to simulate the effect of two AP filters in series, which would have me taking a set of data, applying one AP filter, somehow turning that result into a standalone measurement, and applying an AP filter to that. I think I just assumed that there's be an...

Here's what I'm trying to do: I'm using REW to apply all-pass filters, and it works absolutely amazing for a single 2nd order all-pass filter. The problem I have is that I'm cascading two 2nd order analog filters and they apply one at a time in the real analog world, whereas in REW the two...