Time Alignment in Car via Impulse Response - Page 6 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #51 of 51 Old 10-13-15, 11:17 AM
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Nick
 
Join Date: Jan 2015
Location: Portland, OR
Posts: 106
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subterFUSE wrote: View Post
Sorry.... you are correct. I did not invert polarity. I adjusted the phase control to 180 degrees. The phase control on the Helix DSP Pro is realized by a 2nd Order Allpass filter. Edit: Also, I think the images you linked are pretty old.... when i had even less of a clue what I was doing than I do now. LOL I'm busy tuning my car for INAC Finals this weekend, so I'll try to post some new measurements here that might be more informative.
awesome, that should be fun. I'm currently working on a way to determine how the different crossover selection, different timing, etc. affect the transient response of a system. I have come up with a way to measure, in real time, the step response, and filter the signal coming from the mic to just the range of frequencies shared by the drivers that are sharing a crossover, so, in other words, the crossover region. So far, using this method has proved fruitful. I also have begun making recordings of live instruments, (drums so far) using the same measurement mics that I use to tune systems. This way, the mics own freq. response and IR characteristics are nullified, plus, since I was the one who made the recordings, I know what the live event sounded like. So much fun and an incredible learning experience.
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alignment , car , impulse , response , time

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