Spectrograph: Listen & Download Spectrograph .mp3 Error! Change your browser, please! ⇓ Download Canning machine ⚠ Factory Atmosphere ⚠ Forklift in motion ⚠ Lathe turning on, stop, work ⚠ Dry cleaning ⚠ Room noise, Glass bottles on a conveyor line ⚠ Newspaper press ⚠ Forklift drives by ⚠ Conveyor, conveyor belt ⚠ Brewing unit, mill for grinding grain ⚠ Automatic telephone switch ⚠ Lowers forks, Forklift raises ⚠ ★★★★★