When I shifted the invert even the slightest bit, they just added together.
That sounds logical doesn't it?
Actually there are allways added but 1 an -1 ad up to 0
NO canceling anymore
k
Yeah..thanks! ..that makes perfect sense..I learned some stuff this morning and had a good time in the bargain!
The process has to happen in real time, however, in order to be effective. A recording of "typical" in-Wyatt's-truck noise will not match the actual in-the-moment noise signature closely enough to provide noise cancelling.
Yep..the in-truck noise sounds kind of "average". but it's not..it's very specific..when I put the waveforms under the microscope it became clear. Even so, I tried it out in the truck, since Harley wanted to go for a ride anyway.
I was going to town the other day, and some high pitched wind sounds did a remarkable job of
masking some of the higher freqs of one of my songs that gets gradually higher pitched as it goes along. That's when I started wondering about
Canceling..I vaguely remembered hearing about the Bose 'phones, but didn't know what was going on.
That's what got me started reading and playing around with it this morning.
Basically, what you are trying is 'whack-a-mole'!
Bingo!! ..LOLOLOL..now that really describes it. For in-room suppression, except at very low frequencies the 'anti' sound source has to be as close as possible for both phase, and power distribution field reasons. Therefore if you have lots of noise sources you need lots of indipendent suppressors.
A company I used to work for (till they went bust) specialized in video conferencing kit, and they had some very sophisticated self-teaching echo and noise cancelling kit, but this relied on an extensive array of ceiling microphones and only performed the cancelling for the remote receivers (or recording system). Having said that was seriously impressive - so was the price!
Awesome stuff. I felt like I was in a laboratory this morning, and I appreciate everybody's help. This could have been pretty frustrating, especially when my first logical attempt was such a failure.