The JCS said that North Korean loudspeaker broadcasts were not heard on Thursday, and the South Korean military was monitoring Pyongyang's activities.
Seoul suspended its own loudspeaker broadcasts near the border targeting North Korea on Wednesday, after having resumed propaganda and K-pop blasts last year during a time of growing tension with its neighbour.
South Korean President Lee Jae-myung, who took office this month vowing to resume dialogue with the North, ordered the move to ease tension, a presidential spokesperson said.
Those living near the heavily fortified border have opposed the loudspeaker broadcasts, which they blame for severe noise nuisance.
(Reporting by Hyunsu Yim; Editing by Kim Coghill and Sonali Paul)

A general view over the Demilitarized Zone (DMZ) on the border with North Korea in Cheorwon, Gangwon Province, South Korea, 24 July 2018. South Korea's Defense Ministry said it was pushing for a plan to withdraw forces and equipment from border guard posts 'on a trial basis' in line with the April inter-Korean summit agreement to halt all hostile acts and reduce tensions. EPA-EFE/YONHAP SOUTH KOREA OUT