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Table 4 - Summary of Findings for Trial 1 Conducted in 1998

Table 4: Summary of Findings for Trial 1 Conducted in 1998

No. of tapes

Accuracy

Comment

29

Correctly matched: 82.9%, not including inconclusive or rejected results

Matched pairs were notably different from the rest of the sample population.

6

Incorrectly matched: 17.1%, not including inconclusive or rejected results

Paired tapes had very similar waveforms.

14

Inconclusive and single tapes: 28.6% of total sample, not including rejected results

Examined features were only slightly different.

1

Rejected: 2% of total sample

Tape was recorded in long-play mode.