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Earth, Planets and Space
Fig. 5 | Earth, Planets and Space

Fig. 5

From: Earth-shaking J. LEAGUE supporters

Fig. 5

Plots of audio data for chants rhythm measurements. a 100–200 Hz band-passed waveform of sound record at 14:31:00 – 14:31:30. b Autocorrelation function of the envelope waveform converted from a. A vertical black line represents periodicity of the autocorrelation function

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