3 ms·

It seems like the bigger issue is the amplification of the standing waves in the room when the speaker is close to the wall, not the out of phase nature of the

• lmilcin 6y ago
  Standing wave forms when significant part of the original energy is caught in a geometry that reinforces one wavelength and allows the wave to be reflected multiple times before being dissipated. For example, when you have two bare, parallel walls. Since you can't move the walls to not be parallel (although some people actually did it) what you can do is to look at other parts of requirements: -- ensure energy can be absorbed or dissipated before it can bounce multiple times -- ensure there are other objects that cause distances as seen by the wave to vary, this means there will be no single dominant wavelength that is going to be reinforced and if there is any standing wave it is going to be weak (will start with less energy and have much less of wall surface -- much smaller angle in which it can initially gather the energy). Absorbing bass is very difficult because, as mentioned by somebody else in another comment, it would require very thick material. And so the other way is to cause the energy to be reflected in various different direction so that it is not perceived as single sound. And so, putting objects in your room helps a lot as any person that has removed all their furniture from their room can attest. When you remove furniture the room acoustics suddenly becomes very noticeable due to powerful reflections and standing waves from bare, parallel, hard wall surfaces.