- Info
- This is archived material from the Federal Bureau of Investigation (FBI) website. It may contain outdated information and links may no longer function.
Table 2a
| Table 2a: Correlation values and differences for the clipped-sample restoration of the 1 kHz sine wave signal, using the
two programs. The differences are relative to the correlation values for the native-source to clipped-file comparisons, for each respective
file format. Negative values are contained in parentheses |
1 kHz Sine Wave (Native to Clipped and
Restored) |
File
Format |
Amount
Clipped
(dB) |
Correlation
(to Clipped) |
Program #1 |
Program #2 |
Correlation
(to Restored) |
Difference |
Correlation
(to Restored) |
Difference |
8 kHz
8-bit |
+3 |
0.9860 |
N/A |
N/A |
0.9995 |
0.0135 |
+6 |
0.9860 |
N/A |
N/A |
0.9995 |
0.0135 |
+9 |
0.9860 |
N/A |
N/A |
0.9995 |
0.0135 |
+12 |
0.9860 |
N/A |
N/A |
0.9995 |
0.0135 |
11.025 kHz
8-bit |
+3 |
0.9910 |
0.9999 |
0.0089 |
0.9941 |
0.0031 |
+6 |
0.9738 |
0.9995 |
0.0257 |
0.9877 |
0.0139 |
+9 |
0.9569 |
0.9828 |
0.0259 |
0.9816 |
0.0247 |
+12 |
0.9426 |
0.9025 |
(0.0401) |
0.9714 |
0.0287 |
11.025 kHz
16-bit |
+3 |
0.9912 |
1.0000 |
0.0088 |
0.9943 |
0.0031 |
+6 |
0.9740 |
0.9995 |
0.0255 |
0.9880 |
0.0139 |
+9 |
0.9571 |
0.9831 |
0.0261 |
0.9812 |
0.0242 |
+12 |
0.9428 |
0.9032 |
(0.0396) |
0.9714 |
0.0286 |
16 kHz
8-bit |
+3 |
0.9895 |
1.0000 |
0.0105 |
0.9997 |
0.0102 |
+6 |
0.9754 |
1.0000 |
0.0246 |
0.9863 |
0.0109 |
+9 |
0.9510 |
0.9999 |
0.0489 |
0.9993 |
0.0483 |
+12 |
0.9510 |
0.9999 |
0.0489 |
0.9993 |
0.0483 |
16 kHz
16-bit |
+3 |
0.9894 |
1.0000 |
0.0106 |
0.9999 |
0.0105 |
+6 |
0.9759 |
1.0000 |
0.0241 |
0.9869 |
0.0110 |
+9 |
0.9501 |
0.9999 |
0.0498 |
0.9993 |
0.0492 |
+12 |
0.9501 |
0.9999 |
0.0498 |
0.9993 |
0.0492 |
|
|
|