We present a study on the perception of the missing fundamental in haptic complex tones. When asked to match an audible frequency to the frequency of a haptic tone with a missing fundamental frequency, participants in two experiments associated the audible frequency with lower frequencies than those present in the vibration, often corresponding to the missing fundamental of the haptic tone. This association was found regardless of whether the vibration was presented at the back (first experiment) or the feet (second experiment). One possible application of this finding could be the reinforcement of low frequencies via haptic motors, even when such motors may have high resonance frequencies.
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