The spectrums of vibration displacement of inner and outer rotor not only contain the sum frequency and difference frequency of two rotors'

fundamental frequencies but also contain some superharmonic components (such as 2X and 3X), and, especially for the loose rotor, the multiple harmonic components are more prominent.

The tests to investigate whether aging would affect the vibration response of the floor showed no significant difference in the average

fundamental frequencies for the two cases, and it was concluded that the aging protocol had no effect on vibration response.

In Table 4, the

fundamental frequencies of a clamped-supported double-walled nanotube are considered, for the cases [c.sub.12] = 0 and [c.sub.12] = 0.0694 TPa.

The use of microtremors was later extended to the study of dynamic parameters of buildings, for instance for identification of their

fundamental frequencies and of the possible danger of soil-structure resonance (Mucciarelli et al., 2001; Gallipoli et al., 2004; Mucciarelli and Gallipoli, 2007; Boutin and Hans, 2008).

Initially, the two-tone input was producing two tones of amplitude A at

fundamental frequencies [alpha] and [beta] and two IM products of amplitude C at frequencies (2[alpha]-[beta]) and (2[beta]-[alpha].

The

fundamental frequencies of the two voices were very similar in Experiment 2, thus we can draw a preliminary conclusion that the differences shown between male and female voices are attributed to their differences in frequency that, in natural speaking, are usually greater than the differences between the two artificial voices used here.

The UTEP scientists discovered that the harmonics resonated more strongly than the

fundamental frequencies, which might contribute to the pan's unusual sound.

Within a natural population, the

fundamental frequencies (F0s) of individual hums differ within a range of about 10 Hz.

However, all the combinations with n > 3 are generally less important than the

fundamental frequencies f as well as the second and third harmonic components (i.e., 2f and 3f).

The first is a Voice Range Profile (VRP), which provides the singer with his/her range of dynamics over a full range of

fundamental frequencies. The VRP has been discussed at great length and will not be part of this brief discussion.

The

fundamental frequencies of the beam corresponding to delamination lengths of 0.1 and 0.3 at various locations are compared with analytical solution based on the Euler-Bernoulli beam theory [1] in Table 1.

After evaluating the equipment at the

fundamental frequencies, the range is expanded to include frequencies from 0.1 to 10 times the operational frequencies to evaluate the harmonics and spurs.