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Note that some streams may have up to three different FD SIDs in the same file
segment. However, there should be only one PC SID in a single portion of a specific file.
"Single portion" refers to a commercial, a program segment, etc.
Table 4 shows the interval in seconds at which we would ideally expect to see a specific
SID within any segment of the stream with the listed characteristics. The first three rows
in the table show the most common configurations.
Segment Type
PC-Only
PC + FD
FD Only
FD+FD
FD+FD+FD
PC+FD+FD
Examples
For a 15-minute segment of audio that has only a PC SID of 100, expect to see a SID List
similar to this:
For a 15-minute segment of audio that has a PC SID of
to see a SID List similar to this:
For a 15-minute segment of audio that has only an FD SID of 200, expect to see a SID
List similar to this:
Diagnostic Tips
In evaluating the SID List, remember that the process of encoding and decoding NAES
watermarks does not always produce ideal results. The following factors may significantly
reduce the number of NAES watermarks detected:
Release 1.8 Revision F
9151: NAES 2 count = 160, NAES 6 count = 166
FD SID
9151: NAES 2 count = 5 , NAES 6 count = 0
PC SID
9051: NAES 2 count = 110 , NAES 6 count = 120
PC SID
Figure 4 – SID List Contents
Table 4 – Interval in Seconds
NAES 2
PC
FD
4
N/A
4
4
N/A
2
N/A
2
N/A
2
4
4
100: NAES 2 count = 225, NAES 6 count = 187
PC SID
100: NAES 2 count = 225, NAES 6 count = 187
PC SID
200: NAES 2 count = 225, NAES 6 count = 187
FD SID
200: NAES 2 count = 450, NAES 6 count = 187
FD SID
NAES 6
PC
FD1
4.8
N/A
4.8
4.8
N/A
4.8
N/A
4.8
N/A
4.8
4.8
4.8
100
19
ID3 Tag Validator Application User Manual
FD2
FD3
N/A
N/A
N/A
N/A
N/A
N/A
4.8
N/A
4.8
4.8
4.8
N/A
and an FD SID of 200, expect
Nielsen Confidential
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