NEW YORK — A string of deadly encounters that started with complaints over loud music or offensive noise highlights a growing problem across NYC: Complaints about noise have exploded since the pandemic. The couple had just put their 5-week-old infant to sleep when blasting loud music started to shake the walls of their apartment. Noise complaints have boomed since the pandemic, with this year’s winter months seeing a roughly 40% rise in 311 noise complaints compared with the same time frame in 2019. There have been several other high-profile homicides sparked by noise complaints in the past few months. Just a day later, a 39-year-old Bronx man was shot to death by a housemate over noise complaints in Pelham Gardens.