Sentence examples for below the critical frequency from inspiring English sources

at frequencies well below the critical frequency of the plates of the box.

Below the critical frequency, flexural waves are subsonic and their radiation is due to diffraction phenomena.

Below the critical frequency the damping is pumping controlled, while above critical the plate couplings are the controlling factor.

Measurements of the traffic noise reduction of façades comprising casement windows showed dips in the performance at frequencies below the critical frequency.

The boundary conditions of a vibrating plate are known to have an influence on its sound radiation for frequencies below the critical frequency.

In this study the damping below the critical frequency of the "thick plate" with an "attached plate" and air layer has been investigated by using an impedance approach.

The radiation patterns of a uniform unbaffled beam are given for frequencies below and above the critical frequency.

The absorption area in the receiving room influences the TL below and around the critical frequency, with less absorption resulting in a larger TL (and smaller radiation efficiency).

Plasma resonances occur only when the pump frequency is below or slightly above the critical frequency (e.g. Kosch et al. [2007a]).

This phenomenon can be explained by decreases in the critical frequency below some level when the HF wave completely passes through the ionosphere without reflection (at any given elevation angle).

the critical frequency of the F2-layer.