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AM700 Audio Measurement Set Service Manual
1–33
Table 1–22: Audio analyzer application (cont.)
Capabilities Description
Filters
This application gives the user a choice of several predefined filters.
Supplied Filters
Low Pass Filter 15 kHz, 20 kHz, 22 kHz
High Pass Filter 400 Hz
Weighting Filters A-weighting, CCIR-468-3 (required by AES 17-1993), C-messaging,
B-weighting, F-weighting, CCIR-ARM
Table 1–23: FFT analyzer
Capabilities Description
Frequency related characteristics
Span (the bandwidth of the displayed data) Span is dependent on the input and Zoom as shown in the following table
for typical inputs and sampling rates.
Input Sampling rate Width Zoom factor
High Res 48 kHz 200.156
400.312
800.624
1000.78
2000.56
4003.12
5003.9
10007.8
20015.6
100
50
25
20
10
5
4
2
1 (full)
High Bw 192 kHz 16012.5
20015.6
40031.2
80062.5
5
4
2
1 (full)
AES 48 kHz Same as High Res
AES 44.1 kHz 183.894
367.787
35.574
918.468
1838.94
3677.87
4597.34
9194.69
18389.4
100
50
25
20
10
5
4
2
1 (full)