Atec Rohde-Schwarz-UPV - Manual (Page 20)

Version 03.00, August 2011
20 Rohde & Schwarz R&S ® UPV Audio Analyzer
Filter
For all analog and digital analyzers and generators. All filters are digital filters.
prefilter 1 weighting or user-definable filter Analyzer
function filter up to 3 weighting or user-definable filters
Generator 1 weighting or user-definable filter
A weighting
C weighting
CCIR 1k weighted
CCIR 2k weighted
CCIR unweighted
CCITT
C message
DC noise highpass
deemphasis J.17, 50/15, 50, 75
preemphasis 50/15, 50, 75
IEC tuner
jitter weighted Weighting filters
rumble weighted
highpass 22 Hz
highpass 400 Hz
lowpass 22 kHz
lowpass 30 kHz Highpass and lowpass filters
lowpass 80 kHz
User-definable filters
Design parameters
8th order elliptical, type C (for highpass
and lowpass filters also 4th order),
passband ripple +0 dB/–0.1 dB,
stopband attenuation approx. 20 dB to
120 dB selectable in steps of approx. 10 dB
(highpass and lowpass filters: stopband
attenuation 40 dB to 120 dB)
Highpass, lowpass filters passband (–0.1 dB) selectable,
stopband indicated
Bandpass, bandstop filters passband (–0.1 dB) selectable,
stopband indicated
Notch center frequency and width (–0.1 dB)
selectable,
stopband indicated
Third octave and octave filters center frequency selectable,
bandwidth (–0.1 dB) indicated
File-defined filters any 8th order filter cascaded from
4 biquads,
defined in the z plane by poles/zeroes or
coefficients