on an audio CD?
The challenge here is to create a disc that will play on a standard audio CD player but be difficult to copy or “rip” into an MP3. The techniques making headlines in mid-2001 were developed by Macrovision (2-4-3) and SunnComm (2-4-4). The earliest form of audio CD copy protection was SCMS. This only works on recorders that support SCMS, specifically consumer-grade stand-alone audio CD recorders. “Professional” recorders, and recorders that attach to computers, do not support SCMS. See section (2-25). Some CDs used a damaged TOC (Table of Contents — see section (2-27)) that confused some CD-ROM drives and ripping software. More recent schemes attempt to modify the audio samples in ways that confuse CD-ROM drives into playing static. The next few sections describe these approaches in detail. For a list of suspected copy-protected discs, and some tips on what you can do to let the industry know that the protection isn’t appreciated, see http://www.fatchucks.com/corruptcds/. Many forms of
The challenge here is to create a disc that will play on a standard audio CD player but be difficult to copy or “rip” into an MP3. The techniques making headlines in mid-2001 were developed by Macrovision (2-4-3) and SunnComm (2-4-4). The earliest form of audio CD copy protection was SCMS. This only works on recorders that support SCMS, specifically consumer-grade stand-alone audio CD recorders. “Professional” recorders, and recorders that attach to computers, do not support SCMS. See section (2-25). Some CDs used a damaged TOC (Table of Contents — see section (2-27)) that confused some CD-ROM drives and ripping software. More recent schemes attempt to modify the audio samples in ways that confuse CD-ROM drives into playing static. The next few sections describe these approaches in detail. For a list of suspected copy-protected discs, and some tips on what you can do to let the industry know that the protection isn’t appreciated, see http://www.fatchucks.com/corruptcds/.
The challenge here is to create a disc that will play on a standard audio CD player but be difficult to copy or “rip” into an MP3. The techniques making headlines in mid-2001 were developed by Macrovision (2-4-3) and SunnComm (2-4-4). The earliest form of audio CD copy protection was SCMS. This only works on recorders that support SCMS, specifically consumer-grade stand-alone audio CD recorders. “Professional” recorders, and recorders that attach to computers, do not support SCMS. See section (2-25). Some CDs used a damaged TOC (Table of Contents — see section (2-27)) that confused some CD-ROM drives and ripping software. More recent schemes attempt to modify the audio samples in ways that confuse CD-ROM drives into playing static. The next few sections describe these approaches in detail. A web site at www.fatchucks.com used to have a list of suspected copy-protected discs and some tips on what you can do to let the industry know that copy protection isn’t appreciated. The web site a
(2002/10/21) The challenge here is to create a disc that will play on a standard audio CD player but be difficult to copy or “rip” into an MP3. The techniques making headlines in mid-2001 were developed by Macrovision (2-4-3) and SunnComm (2-4-4). The earliest form of audio CD copy protection was SCMS. This only works on recorders that support SCMS, specifically consumer-grade stand-alone audio CD recorders. “Professional” recorders, and recorders that attach to computers, do not support SCMS. See section (2-25). Some CDs used a damaged TOC (Table of Contents — see section (2-27)) that confused some CD-ROM drives and ripping software. More recent schemes attempt to modify the audio samples in ways that confuse CD-ROM drives into playing static. The next few sections describe these approaches in detail. A web site at www.fatchucks.com used to have a list of suspected copy-protected discs and some tips on what you can do to let the industry know that copy protection isn’t appreciated. T
[2-4-3] …on an audio CD (Macrovision – SafeAudio) [2-4-4] …on an audio CD (SunnComm – MediaCloQ and MediaMax CD3) [2-4-5] …on an audio CD (Midbar Tech – Cactus Data Shield) [2-4-6] …on an audio CD (Key2Audio / Sony DADC) [2-4-7] …on an audio CD (BayView Systems – Duolizer) [2-4-8] …on an audio CD (Sanyo)
