L.I.A.R. stands for "Listening in another room", and is a very valuable tool in serious loudspeaker evaluation.
One of the things I do when auditioning speakers (or demoing them for customers) is crank the volume up a bit louder than normal and go into the next room, leaving the door open. From the next room, all you can possibly hear is the reverberant field, and a good reverberant field response is necessary for long-term listening enjoyment. Also, listening from the next room puts a premium on the dynamic contrast - without good dyamic contrast, the music will be lifeless from the hallway.
Note that, from the next room, a live piano sounds totally convincing. A speaker that can pull that off is something special, and is obviously doing something right.
When there is a significant tonal discrepancy between the on-axis and reverberant response, the ear/brain system has to work harder to integrate the events because they are not as closely related as natural sounds are. The eventual result is listening fatigue.
Of course a speaker has to sound good from the normal listening position, but the L.I.A.R test will quickly give you reliable information on whether a speaker that sounds initially impressive will remain enjoyable hour after hour, or will soon wear out its welcome.
One of the things I do when auditioning speakers (or demoing them for customers) is crank the volume up a bit louder than normal and go into the next room, leaving the door open. From the next room, all you can possibly hear is the reverberant field, and a good reverberant field response is necessary for long-term listening enjoyment. Also, listening from the next room puts a premium on the dynamic contrast - without good dyamic contrast, the music will be lifeless from the hallway.
Note that, from the next room, a live piano sounds totally convincing. A speaker that can pull that off is something special, and is obviously doing something right.
When there is a significant tonal discrepancy between the on-axis and reverberant response, the ear/brain system has to work harder to integrate the events because they are not as closely related as natural sounds are. The eventual result is listening fatigue.
Of course a speaker has to sound good from the normal listening position, but the L.I.A.R test will quickly give you reliable information on whether a speaker that sounds initially impressive will remain enjoyable hour after hour, or will soon wear out its welcome.