Phase Technology dcb-1.0-lr 情報ガイド

 

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other locations worse than it was before the correction was applied. Phase Technology’s application of Audyssey MultEQ 

XT provides 512 FIR coefficients per amplifier channel that provide the highest possible resolution in the lower frequencies, 

at which room problems are most influential. It achieves this extremely fine resolution by applying principles of 

psychoacoustics to non-uniform frequency mapping.  

 

Now we’ve equalized the speakers and the room to sound perfect at the “sweet spot,” the primary listening location. What 

about everybody else gathered to watch that blockbuster movie or special event on TV? How is it possible for a group of 

speakers in different locations to interface with the room’s acoustics in their different ways and still provide uniform 

response throughout the listening area? By measuring the test patterns at each listening location and at multiple heights to 

measure both vertical and horizontal bass modes, Audyssey MultEQ XT begins to recognize response patterns in the room. 

It then uses a fuzzy-logic based clustering approach to weight and combine the response at each seat and then begins to 

develop its correction curves. The system takes 8 x 8,000 samples over 8 x 200-millisecond windows at each measurement 

point for superior analysis and resolution of room acoustic detail. 

 

As the system breaks the seats down into groups and compares them, further refining the process within each subgroup, an 

optimally weighted response is determined for the whole area. Even the primary listening position is made to sound better. 

This is the first audio application of clustering, using mathematical “fuzzy logic” to combine measured results to derive a 

response curve that dramatically improves the sound quality in an entire room. Each of the 16 channels in the DP-2000 

amplifier/processor has this software capability individually, residing in memory allocated by the D2Audio firmware. 

Phase Technology, in addition to using a customized version of Audyssey MultEQ XT, is the first company to combine it with 

a totally integrated system. The speaker, amplifier and calibration designers all knew the exact performance parameters 

of all the other components of the system, resulting in a “closed loop system” yielding more predictable results in any type 

of room.  

 

Once the calibration and correction process is completed, the installer uploads the correction filters to the DP-2000 

amplifier. If the room’s layout or furnishings change, it will be a simple matter recalibrate the room to its new layout, and 

then reload the program changes – an elegant and future-proof solution. 

 

Phase Technology, in partnership with D2Audio and Audyssey Laboratories, has introduced an applications-based digital 

home entertainment system which offers the product variety and flexibility to fit easily into any room. Its performance 

surpasses virtually all other systems at reproducing music and movies in a lifelike manner with precise localization of events, 

seamless blending between all speakers and subwoofers, perfect tonal balance, and detailed alignment of frequency 

response and phase/time relationships. Further, the system resolves these issues in any room and at every seat in the 

listening area, opening up a new window into all audio and video program material. Listeners will hear sound just as its 

artists, producers and directors intended it to be experienced. As the room’s acoustics are being set aside and system 

limitations are removed by the unmatched technology of the Digital Audio Reference Theater System, dARTS literally 

offers entertainment without boundaries!