Fig. 8From: The Huánuco Pampa acoustical field survey: an efficient, comparative archaeoacoustical method for studying sonic communication dynamicsPower spectrum of the loudspeaker-reproduced exponential sinusoidal sweep (ESS) test signal, Huánuco Pampa acoustical survey. Frequency (x-axis) is plotted logarithmically (as per auditory perception), against amplitude (in dB-FS, y-axis)Back to article page