A Brooklyn curmudgeon, so irritated by the noisy hipsters on his trendy Williamsburg block that he called cops more than 400 times, will need earplugs where he’s likely headed next — prison.

Louis Segna, 53, was convicted Wednesday of faking emergency calls of a subway explosion in the Bedford Avenue station and violence at nearby bars. He could face seven years in prison.

“Nine-one-one, what’s your emergency?” a dispatcher asked during one false call from the 6-foot, 300-pound Segna at 1:30 a.m. Dec. 31, 2012.

“Uh, yeah, in Brooklyn there’s a bar called Spike Hill. I went in there and they got the music blasting, and I went in there to try to talk to them, and some guy pushed me out and pulled a knife on me,” Segna stuttered.

“A white guy, he has a black leather jacket.”

Responding police found no knife-wielding customers, court papers state.

The day before, Segna told another dispatcher, “There’s a bar called Station, and there were shots there.”

“How many shots you heard?’’ the dispatcher asked.

“Two or three … There’s a lot of screaming there now. I can see some people running. I’m going to get off the call, I’m getting out of the area now,” Stegna said, lying about the gunfire.

Segna was annoyed by the new residents of his increasingly gentrified neighborhood, his lawyer said outside court after Segna was found guilty.

“He said there are hipsters in the neighborhood. He gave me the impression they were noisier than the population before,” said the lawyer, William Fowlkes, adding that Segna has a borderline mental disability.

Neighbors added that Segna would bang on his apartment floor if he heard even the slightest noise from the Swedish coffee shop on the ground level of his North Seventh Street building. The shop, Konditori, charges $4 for a latte. Segna even sued the cafe’s owners in 2012.

Segna — a bachelor and lifelong Billyburg resident — placed the 911 calls over two years until his arrest in early January 2013.

He was finally collared when NYPD Deputy Inspector Terence Hurson recognized Segna’s distinctive voice and speech impediment on a 911 recording.

Segna could get probation, but Brooklyn Supreme Court Judge William Harrington ordered him remanded — indicating the judge plans to sentence him to some time behind bars.