ref: 6697d9e7f1721bdbc9c996413a5e733e050f3d9e dir: /audio/sfx/trade_machine_3.asm/
SFX_Trade_Machine_3_Ch4: duty 2 unknownsfx0x10 21 unknownsfx0x20 15, 240, 240, 4 unknownsfx0x20 15, 242, 80, 6 unknownsfx0x10 8 endchannel