Technical Headphone Info Here...

[carlsoti]

I just singed up here and I'm reading a lot of "basic" questions regarding headphones and their association with I-Doser.
Here's some great reading, both technical and subjective.

http://www.headphone.com/

I'm not selling their products or trying to drum up business for them, but I have used their site quite exstensively in my own research.

The one single factor I can say that would have the greatest impact in relation to I-Doser is ohm rating. A higher number for ohm rating (generally) means more accurate and balanced reproduction of sound, as long as your output source can drive them. I have a set of MB Quart QP 805's that have a rating of 300 ohms per side. That's about 10 times greater than your typical "off the shelf" earbuds. When people come into my studio and put on these cans, they hear things in their reference music they've never heard before. The down-side is that there's no way something like an I-P*d will drive these to a reasonable level. (read that as "reasonably loud")

Following a close second is a bit that you never hear about, but is more important to frequency response than the actual numerical value of the frequency response. That is the +/- value associated with the frequency response. Finding that info is generally difficult, if not downright impossible. The smaller the "+/- #db" number, the better the response over the whole of the frequency reasponse range. A headphone with a FR of 20-20k @ +/- 6db will usually sound much worse than a set with 45-15k @ +/- 1.5db.

My question to the mods is this: What effects will switching the stereo image have on I-Doser? Will it negate the effects, or just stimulate the brain differently? Additionally, I would assume (and have studied to the effect) that people that have had, and recovered from, traumatic brain inuries will have differing effects than the "average user" with a program such as I-Doser. Have you guys studied that at all? The information gained from such a study may help advance your program' effectiveness.