The loudspeaker broadcasts were part of Cold War-style psychological warfare, with North Korea blasting irritating sounds in response to South Korean propaganda.
The current South Korean president, Lee Jae Myung, has aimed to improve relations with Pyongyang, halting South Korean transmissions in June, which prompted North Korea to cease its own broadcasts.
Despite these de-escalation efforts, tensions could potentially rise again later this month with the planned large-scale combined military exercises between South Korea and the United States.