RK 5000.0/R10 bucket chain excavator leaving the CSA lignite strip mine to a parking site above the mine after mining has ceased 100x to 300x time-lapse Jan/Feb 2017, Komořany (Ervěnice) - Czech Republic Technical parameters: - weight: 5600 t - length 160 m, height 40 m - max. power consumption: 9000 kW - max. output: 4450 m3 of overburden per hour - hydraulic movement system with 15,000 litres of oil - six operators - made in the ČSSR in 1983 - 3 general overhauls as of 2016 time lapse, real sounds, direction, production: Ibra Ibrahimovič photo optimization and editing: Martin Špoula modular ambiente sound designed by citty sound mix and effects

To everyone asking about if the sounds in the video are real, they definitely are. The higher pitched, EDM-like sounds are a result of low frequency noises being compressed into higher frequency ones due to the time-lapse. Notice that there is a thud every time the excavator's base hits the ground. In real life, the impact would be so slow that sound generated by several parts of the machine creaking, bending, and touching the floor bit-by-bit would be mostly low frequency sounds (except for some of the creaking). However, the time-lapse speeds up the noise, making them higher frequency. Due to the immense range of part sizes on this beast, there is also a broad spectrum of low frequencies being produced, and the time lapse compresses this into a broad spectrum of higher frequencies. The sound of drums is effectively a little bit of low frequency sound combined with broad spectrum high frequency pitches (see some power-spectrum graphs of drums to see for yourself). The time-lapse effectively turns the foot-falls of this beast into a base drum, which is a part of the sound here. To summarize, the sounds is definitely real. An understanding of audio power spectrum graphs, Fourier-series, and how time-lapse works explains why this is real.

That thing moves in the most literally and figuratively creepiest fashion of any machine I've ever seen.