When a loudspeaker produces a wave front in a room, the walls produce secondary wave front. At the begining is is easy to identify each elementary reflections but after some time, the reflections are so numerous that it becomes impossible to separate them, it is the reverberation.
The Optimizer compensates separately and with different methods the early reflections and the reverberation. Deconvolution provides best results when only applied to early reflections, while minimal phase (or linear phase) equalization provides best results when applied to the reverberation.
When a loudspeaker is placed in free air or in anechoic chamber, only one wave front is produced at the listening spot.
Let’s consider the first reflection produced by a wall placed immediately behind the loudspeaker. The reflection against the wall creates a secondary wave front.
When the loudspeaker is producing a single pulse, 2 wave fronts are produced at the listening spot. When this condition is compensated with deconvolution techniques, the second wave front is strongly cancelled at the listening position, where any other equalization method would fail.
The result of deconvolution leads the loudspeaker to fire a second time after producing the primary pulse and to produce a second pulse whose wave front is the identical inverse to the wave front of the reflection. The inversed wave front produced by the loudspeaker cancels the reflection and the original single wave front is retrieved.
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