CD-ROM Drive - options on the way of reading CD contents. Recommended to change only by advanced users!
| Use WinAspi (wnaspi32.dll) |
Winaspi.dll is the ASPI driver used to control CD-ROM drives, CD/DVD writers, and tape drives and is often required by CD writing, ripping, and backup software. |
| Read Method |
Method of reading the data from a CD: ATAPI (1), ATAPI (2), SCSI - Generic, read 10, SCSI - Plextor, SCSI - NEC, SCSI - NEC (2), SCSI - Generic (2).
Note: These settings are recommended to be changed only by advanced users. |
| CD Speed |
Relative reading speed of the CD-ROM. The default value is 32. You may want to try to increase this value in order to speed up the ripping process (mostly noticeable when ripping WAV files). |
| Read Sectors |
Maximum number of sectors that will be read at once. Some drives can handle larger values, but some can't handle more than 27. |
| Number of Retries |
Number of retries that will be attempted if un-recoverable jitter errors occur during the ripping process. When retries have been attempted, the CD-Read speed is reduced to 1x. Increasing the number of retries may considerably slow down the ripping process (it is probably better to increase the number of Read Sectors and Read Overlap Sectors to avoid jitter errors). |
| Swap Left/Right Channel |
With certain types of CD-ROMs, the left and right channels are reversed. With this option enabled, you can correct for it (default value is OFF). |
| Enable Jitter Correction |
Program will always attempt to align the output file by using overlapped reads. |
| Sectors Comparison |
When we have read some additional sectors, it is time to do jitter correction. Thus, the last sectors of the first data block are compared with the sectors of the second data block. The question is how many sectors we have to compare to be sure that the blocks are truly aligned? Well, I use 1, but if you think this is not enough, please feel free to increase this number (which of course will slow down the recording process and may increase the number of jitter errors). Make sure though that the Block Compare value does not exceed 0.5 x Read Overlap value (Default value is 1). |
| Read Overlap |
The problem with reading the audio CD format is that you can't very well position the starting track. This may cause a wrong alignment when reading two separate blocks of data (thus gaps can occur, where some sound data is getting lost, or there may be overlap between first and second block of data). To solve this problem, CDRipper uses so-called jitter correction, which means CDRipper is not position the laser to the end of the first block, but a few sectors earlier. This number of overlapping sectors can be entered in the Read Overlap field, this number should be large enough so there will be enough overlap to compensate for wrong positioning of the laser. If you hear strange noises in your WAV file, try to increase the read overlap number. Be aware that the read overlap value should always be less than the Read Sector value. (Default Read Overlap value is 7). |
