Cd Error Rate
Hi-Res Audio Testimonials Bob's Bio ISRC Codes FAQ Copyright Info Clients Site Map Contact Us digital Errors And cd Quality By Bob Speer Write Errors Write errors can result in CD failure. CD manufacturers will reject a master disc if write errors exceed their specifications. There are three common errors types that affect CD quality. They are C1, C2, and CU. C1 Errors C1 Errors refer to the block error rate (BLER), which consists of bit errors at the lowest level. C1 errors are always expressed in errors per second. All CDs and CDRs contain C1 errors. They are a normal result of the write process. However, the maximum C1 error rate for a quality recording is an average of 220 errors per second based on 10 second samples. C2 Errors C2 Errors refer to bytes in a frame (24 bytes per frame, 98 frames per block) and is an indication of a CD player's attempt to use error correction to recover lost data. C2 errors can be serious. In theory, a CD player should correct them. C2 errors are usually an indication of poor media quality, or the failure of a CD burner to produce a quality burn (see conclusion). CU Errors CU Errors refer to uncorrectable errors that are present after error correction. No CU errors are allowed in a recorded disc. Generally, discs with CU errors will not play properly because they contain data that cannot be recovered. When errors are the result of physical damage to the disc, CIRC Logic - Cross Interleaved Reed-Solomon Code, is used to identify and correct random errors, which allows some damaged CDs to play without any distinguishable difference. Conclusion CD replicators consider a disc with an average of 220 C1 errors per second, "a good quality disc." Typically, our masters average less than 1 C1 error per second with absolutely no C2 or CU errors. We have our own standard which states that in addition to no C2 or CU errors, we will not ship any disc that averages more than 2 C1 errors per second. That's .009% of the maximum allowed for a good quality disc. This provides you with an excellent master of the highest quality. If you're going to have your CD professionally replicated, there is no substitute for a quality master provided by a professional mastering facility. While mastering is about EQ, dynamics, song levels, etc.,it's also about providing you with a low error master that will be accepted by CD replicators. We test each maste
Check CD error rate User Name Remember Me? Password Register FAQ Today's Posts Search Search Forums Show Threads Show Posts Tag Search Advanced Search Go to Page... Thread Tools Search this Thread Display Modes #1 04-26-2005, 03:46 PM kmt Member Join Date: Jun 2000 Location: Buchholz, Niedersachsen, Germany Posts: 18 Check CD error rate Hello to everyone out there! I've got a question concerning mastering: What do you think is the best way to ensure that a master CD-R (which shall be sent to the copy factory) is http://www.cdmasteringservices.com/digitalerrors.htm free of errors (e.g. drop-outs etc.)? Do you know a software which can do this? My way in the past was to playback the whole CD in my standard CD player. But this takes up a great deal of time. Perhaps you know a better (faster/more detailed) way to find errors on a master CD?!? Greetz Kai Markus Tegtmeier kmt View Public Profile Send a private message to http://duc.avid.com/showthread.php?t=135397 kmt Visit kmt's homepage! Find all posts by kmt #2 04-26-2005, 04:09 PM bigbubbaj Member Join Date: May 2004 Location: Colorado, USA Posts: 1,457 Re: Check CD error rate If you burn it using redbook authoring software, I usually burn copies at 1x,4x,8x and the fastest that the burner will do. Send ALL of those to the duplicator. What are you using to burn the CD's, wavelab or CD architect etc? __________________ 5198 Studios bigbubbaj View Public Profile Send a private message to bigbubbaj Visit bigbubbaj's homepage! Find all posts by bigbubbaj #3 04-26-2005, 04:10 PM bigbubbaj Member Join Date: May 2004 Location: Colorado, USA Posts: 1,457 Re: Check CD error rate Youo shouldnt have errors on a disc using a program like that, also. You will find that the program will reject the disc rather than burn errors etc. __________________ 5198 Studios bigbubbaj View Public Profile Send a private message to bigbubbaj Visit bigbubbaj's homepage! Find all posts by bigbubbaj #4 04-26-2005, 04:34 PM Ducky Member Join Date: Aug 2004 Posts: 929 Re: Check CD error rate I think this is the info your talking about: here This is high end stuf
to 74–80 minutes (up to 24 minutes for mini 8 cm CD) Read mechanism Semiconductor laser (780 nm https://en.wikipedia.org/wiki/Compact_Disc_Digital_Audio wavelength) Standard IEC 60908 Developedby Sony & Philips Usage Audio storage Optical discs General Optical disc Optical disc drive Optical disc authoring Authoring software Recording technologies Recording modes Packet writing Optical media types Compact Disc (CD): CD-DA, CD-ROM, CD-R, CD-RW, 5.1 Music Disc, Super Audio CD (SACD), Photo CD, CD Video (CDV), Video CD (VCD), cd error Super Video CD (SVCD), CD+G, CD-Text, CD-ROM XA, CD-i DVD: DVD-R, DVD+R, DVD-R DL, DVD+R DL, DVD-R DS, DVD+R DS, DVD-RW, DVD+RW, DVD-RAM, DVD-D, DVD-A, HVD, EcoDisc Blu-ray Disc (BD): BD-R & BD-RE Universal Media Disc (UMD) Enhanced Versatile Disc (EVD) Forward Versatile Disc (FVD) Holographic Versatile Disc (HVD) China Blue High-definition Disc (CBHD) cd error rate HD DVD: HD DVD-R, HD DVD-RW, HD DVD-RAM High definition Versatile Multilayer Disc (HD VMD) VCDHD GD-ROM MiniDisc: MD, Hi-MD Laserdisc: LD, LD-ROM Video Single Disc (VSD) Ultra Density Optical (UDO) Stacked Volumetric Optical Disk (SVOD) Five dimensional disc (5D DVD) Nintendo optical disc (NOD) Archival Disc Standards SFF ATAPI/MMC Mount Rainier (packet writing) Mount Fuji (layer jump recording) Rainbow Books File systems ISO 9660 Joliet Romeo Rock Ridge / SUSP El Torito Apple ISO 9660 Extensions Universal Disk Format (UDF) ISO 13490 See also History of optical storage media High definition optical disc format war v t e Compact Disc Digital Audio (CDDA or CD-DA) is the standard format for audio compact discs. The standard is defined in the Red Book, one of a series of "Rainbow Books" (named for their binding colors) that contain the technical specifications for all CD formats. Contents 1 Standard 2 Audio format 2.1 Sample rate 2.2 Pre-emphasis 3 Storage capacity and playing time 4 Techni