It's got that fundamental base frequency down here with lots of harmonics up here, but it's just buzzy noise.

它的基本基频在这里，这里有很多谐波，但这只是嗡嗡声。

The flights are operated once a week, and the carrier will consider increasing the frequency based on market demand, it said.

该公司表示，这些航班每周运营一次，航空公司将根据市场需求考虑增加航班频率。