[Spktyr]

No, I am not. I am simply pointing out that your assertion that ‘A police car public address system can be heard inside every house’ is not longer always true. At one point I had a recently retired Crown Victoria police car that the police had removed the lights and radio from prior to sale - but left the siren and PA system mostly intact. My friend had a new ‘super energy efficient house’ that was disturbingly quiet inside. Experimentation followed and we found that literally nobody in his development cul de sac could hear the car’s *very* loud PA system in their new homes.

[dragnet2]

Not what happened in this case. The victims wife said they heard barking dogs outside prior to the husband being shot.

So this would clearly establish the the residences was not sound proof.

[dragnet2]

And since you've brought up well modern construction and well insulated energy efficient homes are nearly sound proof, that would seem to be even more reason for law enforcement to uses amplified public address systems as opposed to the deputies, "Calling out" to ID themselves.

If occupants in a nearly sound proof residence could not hear an amplified public address system, they certainly couldn't hear someone verbally, "Calling out".