Apple WaveBurner 1.5 - Manual (Page 41)

Chapter 4 Working With Tracks 41
Setting the Copy Prohibit Bit
You can set a Copy Prohibit Bit for a track. When a track’s Copy Prohibit Bit is set, the
track cannot be digitally copied more than once—by recording devices that support
the Serial Copy Management System (SCMS). These devices automatically write a Copy
Prohibit Bit to prevent further generation of digital copies (of the track).
Consumer-level DAT recorders (and a handful of professional-level units) are usually
equipped with SCMS. Given the number of recording devices that do not include this
type of copy protection, setting the Copy Prohibit Bit does not guarantee that the track
cannot be copied multiple times. WaveBurner provides the option to set the Copy
Prohibit Bit in order to comply with the Red Book standard.
To set the Copy Prohibit Bit, do one of the following:
m In the Track List, choose Free, Protected Original, or Protected Copy from the SCMS
pop-up menu.
m In the General tab of the CD Track Info window, choose Free, Protected Original, or
Protected Copy from the SCMS pop-up menu.
Setting Track Pre-Emphasis
The use of pre-emphasis dates from the early days of digital sound reproduction, when
14-bit A/D converters (without oversampling) were frequently used. The high
frequencies of digital recordings were boosted or “emphasized” during conversion
(similar to the RIAA EQ process for vinyl records), then were attenuated (de-emphasis)
after D/A conversion. This tended to mask the inaccuracies of the conversion process.
With today’s advanced digital recording technology, it is recommended that you leave
pre-emphasis turned off, because modern converters are capable of delivering linear
conversions that produce far fewer errors than de-emphasis filters.
Note: WaveBurner only supports pre-emphasis so that old digital recordings (that were
processed with a pre-emphasis algorithm) can be marked as such. WaveBurner’s Pre-
emphasis is only a flag intended for the CD player, and does not change the way that
the audio is processed when you burn a CD.
To turn on pre-emphasis, do one of the following:
m Click the PE checkbox in the Track list.
m Click the Pre-Emphasis checkbox in the General tab of the CD Track Info window.