Sentence examples for measured sound fields from inspiring English sources

The comparison between the calculated and measured sound fields shows good agreement for the maximum sound pressure levels, but differences were observed in the directivity characteristics, which are mainly caused by the different velocities in the jet and the external flow (wind tunnel flow).

(2) Measured sound pressure relative to free field from a spark source above a cylindrically curved sheet of Perspex were compared to the pressure calculated by using the theory of Pridmore-Brown, Pierce, and Rasmussen for a temperature-stratified medium.

These studies measured sound transmitted by air conduction.

The motor is characterised by a line of four monopoles on its axis, the complex source strengths for which are obtained from the measured anechoic sound field around the motor using an inverse method.

Moreover, the other key issue is that the SPLs measured in the free field are not the actual SPLs in the ear canal because the baffle effect of the head and torso is also important for measuring sound transfer from the free field to the ear.

As the next step, field experiments were carried out to measure sound level (SPL), early decay time (EDT) and clarity index (C80) in the two existing halls which have different surface diffusivity conditions.

As an alternative to microphones, optical techniques have been studied for measuring a sound field.

A high degree of similarity is found between the measured and simulated sound fields.

The local action of transient bubbles and microjets in cavitating sound fields was measured and calculated.

In it, the background to the research is presented and measures to characterize factory sound fields are chosen.

Experiments have been performed to measure changes in the velocity and sound fields for Mach numbers ranging from 0.4 to 0.6, and for distances between the plate and the jet axis ranging from 1 to 2 jet diameters.