Specifications

Chapter 6: DigiRack Real-Time TDM and RTAS Plug-ins 61
Noise Shaping
Noise shaping can further improve audio perfor-
mance and reduce perceived noise inherent in
dithered audio. Noise shaping uses filtering to
shift noise away from frequencies in the middle
of the audio spectrum (around 4 kHz), where
the human ear is most sensitive.
The POW-r Dither plug-in provides three types
of noise shaping, each with its own characteris-
tics. Try each noise shaping type and choose the
one that adds the least amount of coloration to
the audio being processed.
Type 1 Has the flattest frequency spectrum in
the audible range of frequencies, modulating
and accumulating the dither noise just below
the Nyquist frequency. Recommended for less
stereophonically complex material such as solo
instrument recordings.
Type 2 Has a psychoacoustically optimized low
order noise shaping curve. Recommended for
material of greater stereophonic complexity.
Type 3 Has a psychoacoustically optimized high
order noise shaping curve. Recommended for
full-spectrum, wide-stereo field material.
D-Verb
D-Verb is a studio-quality reverb provided in
TDM, RTAS, and AudioSuite formats.
D-Verb Controls
Output Meter
The Output Meter indicates the output level of
the processed signal. With the stereo version of
D-verb, it represents the summed stereo output.
It is important to note that this meter indicates
the output level of the signal—not the input
level. If this meter clips, it is possible that the
signal clipped on input before it reached
D-Verb. Monitor your send or insert signal levels
closely to help prevent this from happening.
The POW-r Dither plug-in is not appropri-
ate for truncation stages that are likely to be
further processed. It is recommended that
POW-r Dither be used only as the last insert
in the signal chain (especially when using
Type 1 Noise Shaping).
For more information on using Dither, see
the Pro Tools Reference Guide.
The TDM version of the D-Verb plug-in is
not supported at 192 kHz; use the RTAS
version instead.
D-Verb plug-in