Tabla de contenido
Publicidad
Characteristic
Bandwidth Limiting Filters
8
High-Pass
DC
AC (< 10 Hz)
Butterworth
Elliptic
5, 8
Low-Pass
ADC Passband
20k (AES17), 40k (AES17)
Butterworth
Elliptic
Weighting
Input Equalization
APx515 B Series Audio Analyzer: Specifications
Specifications
DC coupling
AC coupling
F
(–3 dB) = 10 Hz to 90 kHz, 4-pole
HP
F
(–0.01 dB) = 10 Hz to 90 kHz;
HP
5-pole; 0.01 dB pass-band ripple;
≤–60 dB stop-band
No filter is implemented, bandwidth
and response are limited by the A/D
and sample rate (SR)
Special filters conforming with AES17
F
(–3 dB) = 10 Hz to 90 kHz, 8-pole
LP
F
(–0.01 dB) = 10 Hz to 90 kHz,
LP
8-pole; 0.01 dB pass-band ripple;
≤–60 dB stop-band
A-wt, B-wt, C-wt, CCIR-1k, CCIR-2k,
CCITT, C-message, 50 μs or 75 μs
de-emph (with and without A-wt), or
None
Arbitrary 30-pole input filter
Supplemental Information
Response is 2-pole via a combination
of analog and digital filters, and is
typically –3 dB at 4.1 Hz
–3 dB at ≈ 0.490 • SR, SR 216 kS/s
ENBW ≈ 1.006 • F
LP
ENBW ≈ (1.012–1.062) • F
(varies
LP
due to warping)
Weighting filter is cascaded with both
high-pass and low-pass filters
The EQ operates on any selected ana-
lyzer input channels.
29
Publicidad
Tabla de contenido
