From fireworks to the doorbell or people talking in the street, there are many common sounds that will have a reactive dog up on his paws to defend his patch with ferocious barking.
This is all very well, but in the modern city noises outside your dog's core territory (the home!) are a fact of life. It may be things have got to the point where settling down to watch the latest boxed set is simply not possible. You've no sooner got comfy on the sofa when a shout in the street has the dog giving a deafening bark that has you spilling the popcorn. While this is a good tactic form the dog's point of view for scrounging an illicit snack, it's not so great for your nerves (or his waistline.)
Unfortunately, most people's reaction is to yell at the dog to be quiet. At which point, the dog misinterprets your cries as a poor imitation of barking and thinks you're joining in. Instead, what the clever pet parent does is to either teach the dog to be quiet on command or issues an instruction for the dog to carry out which is incompatible with barking.
If this all sounds like wishful thinking, here's how to make it happen.
However, be aware that barking is often deeply ingrained behavior, so things aren't going to change quickly. Don't be discouraged, but instead channel your energy into regular daily training sessions which will help to retrain the dog.
Also, it's important not to accidentally reinforce bad behavior by giving the dog attention when he barks. If necessary, be prepared to leave the room and let the dog get on with barking if that's the only option. At least then you have withdrawn attention, which sends the dog a powerful message and doesn't unwittingly reward him.
The basics you need to teach the dog to lead a quieter life include: