ref: f8b710769dba1e128450c3d11eb2a7a05f745877 dir: /audio/sfx/trade_machine_1.asm/
SFX_Trade_Machine_1_Ch4: duty 2 pitchenvelope 21 squarenote 15, 240, 240, 4 squarenote 15, 242, 80, 6 pitchenvelope 8 endchannel