Recently, Ghosh and Ray [12] and Chizhevsky [13] found that VR can also occur at the high-order frequencies. Specifically, if the low-frequency of one excitation is ω, the vibrational resonance induced by the high-frequency excitation may occur at frequencies which are multiple of the frequency ω. In general, the excitation frequency ω is named as primary frequency, and the frequency nω/m is named as superharmonic frequency and subharmonic frequency when n/m > 1 and 0 < n/m < 1, respectively. When the VR occurs at the primary frequency ω, we have the traditional VR phenomenon. When the VR occurs at the superharmonic frequency nω, where n > 1 is a positive integer number, this kind of VR was named nonlinear VR by Ghosh and Ray [12], or vibrational higher-order resonance by Chizhevsky [13]. From theoretical considerations, a resonance can not only occur at the primary frequency ω or the superharmonic frequency nω (n is a positive integer), but it may also occur at the frequencies nω/m. Here, n/m is positive but not limited to an integer. Thus, a question arises, whether the high-frequency excitation can induce a resonance at the subharmonic frequency nω/m (0 < m/n < 1) or at the general superharmonic frequency nω/m (n/m > 1, but it is not an integer number). As a consequence, we consider it worth to analyse the resonance phenomena at the general frequencies nω/m. Among other reasons, these frequencies appear in many engineering structures and usually as a source inducing a fault in the working [14], [15] and [16]. Thus, the main motivation of this work is to investigate the resonances induced by a high-frequency excitation in the framework of the nonlinear frequency response theory. In this paper, we name VR at the subharmonic frequency as the vibrational subharmonic resonance (VSubR) and name VR at the superharmonic resonance as the vibrational superharmonic resonance (VSupR). This is because the resonance is a subharmonic resonance and a superharmonic resonance at first and these resonant behaviors are mainly induced by the vibrational high-frequency perturbation then. In previous references, the subharmonic resonance and the superharmonic resonance are usually induced by only one excitation. As far as we know, it has not been reported that this kind of resonance can be enhanced by another high-frequency excitation.