ABSTRACT
Where a loudspeaker is placed in a room has a major effect on how it sounds, especially at low frequencies. Figure 4.10c is an excellent illustration of what happens when a loudspeaker is placed in three different, but entirely feasible, locations in a room. The measurable and audible differences are not subtle. What is seen in the fi gure is a combination of the effects of standing waves and adjacent-boundary effects. For this chapter, we focus on adjacent-boundary effects, which occur when the loudspeakers are less than a wavelength from one or more room boundaries. Then, depending on the distance from each boundary, a systematic acoustic interference causes fl uctuations in the sound power radiated into the room.
