Filter 4 (Poor Bezier Interpolator); Filter 5 (Bezier Interpolator Plus Noise-Shaping) - T+A DVD 820 M Betriebsanleitung

Filter 4 (pure Bezier interpolator)
This process delivers a perfect reconstruction of the
original music signal. It exhibits no pre- or post-echoes of
any kind, and does not add coloration or timing errors to
the original signal. In sonic terms this method offers an
impressive blend of naturalness, good dynamics and
accuracy. This is our preferred process due to its advan-
tages in respect of sound, and is the basic (default)
setting of the DVD 820 M.
Frequency response and transient characteristics of
the Bezier interpolator

Filter 5 (Bezier interpolator plus Noise-Shaping)

In this variant what is known as „noise-shaping" is added
after the ideal Bezier algorithm. This supplementary
stage further reduces the basic hiss in the audible range.
With certain types of material (e.g. classical music with a
very wide dynamic range) this can be an additional
advantage, but does result in a slight loss in precision
compared with the „pure" Bezier process.
Frequency response and transient characteristics of
the Bezier interpolator plus noise-shaping
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