matterials for soundproofing a mic, and active noise filtering
hey. so in my car, i am using speech recognition to do almost anything. i have the mic, right atop of the steering wheel column, and it understands me pretty well. (the mic is striped to only its basics). the problems is, that, as expected, the noise is too much when i have music on, or especially when i have the windows open, for it to understand me. so, i have 2 topics.
1) i was thinking of making a "sound proof cave" for the mic. the propose of this, is to dampen all the side-comming noises, so they dont have much effect on the mics input. i know i have to use porous materials to do that, but the problem is, the cave, must be as small as possible (otherwise it blocks line of sight to the speedometer ) . so what would be a good way to do this, in your experience??
2) i have heard of techniques, of active noise filtering, (picking up the noise from another mic, and the reversing its phase, and sending it on the mics outpout). i was thinking something, that would "know what music the pc is playing" , and use some external hardware , to remove it from the mics, output. anyone can shed some light on this?? i have pretty good electronics knowledge, so i could do something DIY.
any help would be appriciated!!