“Ghost sounds were heard from the north” ... Did North Korea test noise broadcasts aimed at South Korea?

[Financial News] Claims have emerged that North Korea began test transmissions of loudspeaker broadcasts aimed at South Korea early on the 29th.
The broadcasts from the North reportedly continued for four to five hours during the morning. But the Unification Ministry said there had been no unusual developments related to North Korea’s loudspeaker broadcasts aimed at the South, sparking controversy. 
Residents of border areas in Paju, Gyeonggi Province, say North Korea began broadcasting toward the South at 6 a.m. that day. Although the sound was not loud, they say the broadcasts could be heard from the morning.
A resident of Daeseong-dong, the only village inhabited by civilians within the Korean Demilitarized Zone (DMZ), told a news outlet about the test broadcast, saying, “There was a brief sound of singing at 6:30 a.m., followed by faint sounds of ghosts and the like.”
Ghost sounds and animal cries were reportedly heard from the North as part of noise broadcasts aimed at the South. These were the strange noises that had been heard until North Korea stopped its loudspeaker broadcasts aimed at the South a year earlier.
Kim Yo Jong, director of the Workers’ Party of Korea’s General Affairs Department, previously threatened that North Korea would bring loudspeaker broadcasts aimed at South Korea into operation along the entire border this month. She also announced that new weapons would be deployed along the entire border.
If North Korea begins loudspeaker broadcasts aimed at the South this month, as Kim Yo Jong warned, it will be resuming them about a year and four months after June last year.
At President Lee Jae-myung’s direction, the South Korean government preemptively halted loudspeaker broadcasts aimed at North Korea in June last year, and North Korea responded by stopping its noise broadcasts aimed at the South that same month. The South Korean military later removed all of its fixed loudspeakers aimed at North Korea, but the North Korean military reportedly kept its loudspeakers in place rather than dismantling them.
Meanwhile, the Unification Ministry said it had detected no unusual developments related to North Korea’s loudspeaker broadcasts aimed at the South. The National Intelligence Service (NIS) also currently considers the account from a Daeseong-dong resident that day to be a “mistaken report.”
A Unification Ministry official told reporters covering the ministry that day, “There are no further developments in North Korea’s loudspeaker broadcasts aimed at the South,” adding, “There is nothing noteworthy to report about the deployment of new weapons.” The official said, “Kim Yo Jong said in her statement that they were on standby,” explaining that this meant “they are preparing to bring them into operation,” and said no related developments had yet been detected. 

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