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Pioneer's proprietary phase control technology, Phase Control,
which dramatically improves multi-channel sound quality, has evolved.
By adding technology that erases the low frequency phase differences produced inside AV receivers or speakers,
or group delay produced between multiple speakers...
We have developed Auto Phase Control Plus
to automatically eliminate the LFE (Low Frequency Effect) phase shifts
that are present in Blu-ray Discs, DVDs and broadcasts.
In multi-channel content, the LFE is removed through a low pass filter during mixdown or mastering;
however, in some cases, the content is reproduced as is with the phase difference remaining.
This LFE phase difference also impacts other channels, causing the sound and rhythm to be indistinct.
The solution is Auto Phase Control Plus.
Auto Phase Control Plus uses DSP to analyze and automatically correct this LFE shift.
Along with the correction by conventional phase control,
accurately matching all phases from sound input to output...
achieves high sound quality with unprecedented low frequency strength,
a sense of energy, and clarity in the high frequency range.