Part 4.2: Elementary acoustic loads of a loudspeaker

Pressure radiated by a speaker system is due to the contribution of a loudspeaker (volume velocity w_s) and that of the vent (volume velocity w_e). Assuming that the sources are small comparing to the wavelength and that the flow (losses) is negligible, pressure response can be written as:

Assuming that the listening point is on the axis or in a far field, it comes to and the radiated pressure is directly proportional to .

Thus, it is written as a function of the volume velocity that is necessary to compress the air inside the volume

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