How do I get my fixed male dog to stop barking at one of my bitches?

She only barks when he hears something outside, who barks takes the first food (she growls with him for that), when my family and I call each one from another room, or the trash man is out 80% of Sometimes barking is directed to it or in a vacuum. Fortunately that is never violent or anything, but his anger and escapes to another room or try to ignore it. I want a solution human real nothing about those collars that spray water or shock. He is fixed as not having the balls so you can not get warm no matter how hard you try. He is like a puppy and what it is. We have tried to command the company and all and in fact I believe I know how to handle dogs I've had my whole life is different and behaves perfectly behave well more than that.

Get Frisky if I could still not hot .. and since they are puppies, barking * * only puppy love

Dog Shock Collar Human Experiment 1