Yeah, what you do is you breed until you eventually get a male with the characteristic, and then give it a power item (Power Lens, Power Band, [the ones that promote a certain stat but lowers speed while holding]etc.) and 90% of the time it will get that characteristic. Um, if it takes too long to get that characteristic, you can stop if you get one that is any one of the speed characteristics. Thank you!
I'd be happy to breed you a modest deino with a perfect IV of your choosing, but I'm not sure how to guarantee, "alert to sounds." I'm not even sure if that's possible, actually.