Error Correction Tests

In the following tests we examined the error correction capabilities of the INcoder TS24C-C1, while reading a recorded CD-R.

- EAC CD-R Test Disc

- Test Results (Max Reading)

The Pioneer DVR-A05 starts reporting errors at 17mins. The errors within the black triangle defect, reached -48dB in specific areas. The five scratches also produced errors but the signal/noise level was less than -48dB(A). The score is of 84.1 out of 100 (max), which is a good performance.

Errors total	Num: 15469
Errors (Loudness) dB(A)	Num: 4324	Avg:-83.1 dB(A)	Max: -49.0 dB(A)
Error Muting Samples	Num: 22	Avg: 1.0 Samples	Max: 1 Samples
Skips Samples	Num: 0	Avg: 0.0 Samples	Max: 0 Samples
Total Test Result	84.1 points (of 100.0 maximum)

- ABEX TCD-721R

- Introduction

This test disc includes artificial scratches with lengths from 1.8 mm to 3.0 mm.

Using the ABEX TCD-714 as the reference disc, we created the reference.wav file that is needed for the comparison. Using the c2extract.exe software and by setting the maximum reading speed with Nero Drive speed we ripped the disc. The attached analyse.exe software gave the comparison results.

- Test Results (Max speed)

Errors total	Num: 1287169
Errors (Loudness) dB(A)	Num: 105525	Avg:-77.8 dB(A)	Max:-18.9 dB(A)
Error Muting Samples	Num: 4309	Avg: 1.1 Samples	Max: 89 Samples
Skips Samples	Num: 0	Avg: .0 Samples	Max: 0 Samples
Total Test Result	75.6 points (of 100.0 maximum)

The score for Pioneer DVR-A05 is 75.6 which is an average performance. The total errors are more than in the previous test, as it was expected, since the disc is heavily scratched. The average level of the Loudness errors is -77.8dB(A).

- ABEX TCD-726

- Introduction

The ABEX TCD-726 includes three kinds of defects, interruption, black dots and fingerprints. The interruption defects are sized from 0.5 mm to 1.0 mm. The black dots are from 0.4 mm to 1.0 mm and the fingerprints range from 65 to 75 micrometers.

- Test Results (Max Speed)

The drive gave a very high score of 84.1 points out of 100. Only two errors loudness occurred and their level is low, -23.9dB(A) average. The only skip sample has a length of 404 samples.

Errors total	Num: 0
Errors (Loudness) dB(A)	Num: 2	Avg: -23.9 dB(A)	Max: -21.9 dB(A)
Error Muting Samples	Num: 0	Avg: 0.0 Samples	Max: 0 Samples
Skips Samples	Num: 1	Avg: 404.0 Samples	Max: 404 Samples
Total Test Result	84.1 points (of 100.0 maximum)

- Conclusion

Test Disc	Reading Speed	Score
EAC CD-R	Max	84.1
ABEX TCD-721R		75.6
ABEX TCD-726		84.1
Average Score		81.26

The INcoder TS24C-C1 gets a good score of 84.1 out of 100 at our reading error correction tests.

- C2 Information accuracy

- Test Results (MAX Speed)

The drive missed only 29978 C2 marks and gave 69 sync errors. The quality score is 84.1 which is very good, and the C2 accuracy is 97.71%.

The EAC software gave the drive a 99.7% C2 accuracy. In the following table there are the C2 accuracy score for each test with the EAC and ABEX discs. In the test with the ABEX TCD-726 disc, the drive reported very few errors so the C2 accuracy result could not be estimated.

 

Test Disc	Reading Speed	INcoder TC24C-C1
		Score
EAC CD-R	Max	100
ABEX TCD-721R	Max	99.4
ABEX TCD-726	Max	-
Average Score		99.7