I shall be very contrary here, as those who know and love me dearly here, like Tim, are only too aware. Room treatments are one means of making sure that the received sound at the listening position is as disturbed as little by distracting, effectively distorting, additions. Another technique, which is harder, but ultimately more effective and doesn't require the room to be disturbed, is to refine the quality of the sound as at the time it emerges from the speaker drivers. Because, once the sound exits from the speakers any deficiences in the sound at that point have bolted from the stable so to speak, they're in the room, and all you can do now is play with positioning of speakers, listening position, room treatments to minimise the impact of the disturbing artefacts.
Having experienced heavily treated rooms, I don't like them: they feel weird. Much better to improve the sound itself, then your ear will have an easy job separating the musical event from room sounds. My current system is as badly set up in the room as it can possibly be; everything you can do wrong is part of the picture, but that doesn't prevent the imaging, etc, etc, from working.
Frank
Having experienced heavily treated rooms, I don't like them: they feel weird. Much better to improve the sound itself, then your ear will have an easy job separating the musical event from room sounds. My current system is as badly set up in the room as it can possibly be; everything you can do wrong is part of the picture, but that doesn't prevent the imaging, etc, etc, from working.
Frank