The DPR-901ii is a 4-band parametric equalizer which varies the degree of equalization dynamically, as the program level changes. The process can be thought of as frequency selective compression and/or expansion, but it is fundamentally different to simple frequency-conscious' dynamics processing as used for noise gating, de-essing and the like. It is also very different to the growing family of sliding filter' techniques used in single-ended noise reduction processors. A split facility allows the unit to be used as 2 separate 2-band units, and a side chain listen button allows monitoring of the filter setup.<BR><BR>Frequency selective compression is equivalent to applying CUT on a normal equalizer while frequency selective expansion is like applying BOOST. However, the DPR-901ii can be more subtle as the process is dynamic: it will only occur above (or below) the threshold you have set. <BR><BR>Some possible uses for the DPR-901ii technology can be: <##HC bull ##>To selectively compress and/or expand, broad or narrow-band segments of program. <BR> <##HC bull ##>To de-ess and de-pop. <BR> <##HC bull ##>To add dynamic loudness control (eg. bass boost at low SPLs). <BR> <##HC bull ##>To control SPL in a dynamic and frequency conscious manner. <BR> <##HC bull ##>To enhance or sweeten' mixed programme. <BR> <##HC bull ##>To improve voice intelligibility (without risking howlround or feed-back). <BR> <##HC bull ##>To enhance low level vocals. <BR> <##HC bull ##>To correct for and/or guard against, bad microphone technique (by unskilled performers).<BR> And in common with other units in BSS Audio's processor range, the DPR-901ii features: <##HC bull ##>Friendly rotary control knobs for all parameter adjustments. <BR> <##HC bull ##>Excellent low level resolution to maintain subtle musical detail. <BR> <##HC bull ##>Minimum phase and low group delay for any EQ setting. <BR> <##HC bull ##>High headroom >+ 20dBu. <BR> <##HC bull ##>Conservative drive capability into low impedances (down to 600 ohms) and long, highly capacitive cables. <BR> <##HC bull ##>Automatic relay controlled signal bypass if mains power is disconnected or fails. <BR> <BR><BR>Altogether, the DPR-901ii will not degrade a conventional high quality analogue signal processing chain, even when two units are inserted in line with the composite stereo mix.<BR><BR> <BR><BR>
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