On Perfect Pitch

I am determined to learn perfect pitch. I have heard that it is possible to learn it, and I have a pretty good ear already. I have pretty good relative pitch, and usually, when I'm trying to sing a certain note, I can get within a whole step of the pitch that I am aiming for. I just want to be able to pull out any note and say what it is, or be able to tell what key something is in without referencing an instrument.

I did some research today on methods that will help you obtain perfect pitch, and I found some courses you can buy that will train your ear to recognize and memorize how different tones sound. I found one that didn't seem like a scam, but even that one got some negative reviews, and it's so expensive... Plus, the idea behind it seems like something I could just do on my own. I've started working on it today and I already think I am improving.

The concept behind David Burge's Perfect Pitch method (the one I was looking at) is that every note has a separate quality and color. You just have to learn how to listen and hear notes in a different way. It suggested playing and singing and meditating on how certain notes sound on your primary instrument. In the practice room today, I focused on concert A. I played it over and over and listened for the quality of the note and compared it to other notes. Then, a couple of times, after playing something in another key, I tried to quiz myself as to where the pitch was. I wouldn't always get it right, but I feel like I really discovered some certain qualities about the particular note concert A that are not like other notes... to me it sounds really bright and kind of expectant, like unresolved. Db sounds warm and dark. Throughout the day, I have been testing myself with a pitch pipe handy and I've been getting more correct than I had been in the past! If I keep practicing every day, I think I can develop perfect pitch by the end of the summer for sure.