User manual

Expert settings
If you click on the 'Expert' button, the dialog will be
extended, allowing special options to be chosen that
are not relevant to the 'normal' user.
Original bit: This means that the mp3PRO file is an
original and not a copy. This information can be
important in relation to future copy protection options
and is also of value to the user for information
purposes.
Private bit: The user can set this bit however he or
she wants. It has been conceived primarily for those
users who want to decode or evaluate mp3PRO
files. The bit is stored in the mp3PRO file, but nearly
all programs ignore it.
Copyright bit: This bit means that the mp3PRO file
concerned is copyright-protected. In addition, it is
used for SCMS (Serial Copy Management System).
However, it does not have (or at least currently does
not have) any influence when playing or burning the
files.
Write CRC: By setting this bit, checksums (proof
totals) are also stored. These recognize defective
sections of the file (which may have arisen from
incorrect data transfer from the Internet, etc.).
However, many decoders ignore this checksum
information, while others reproduce a defective
mp3PRO section as silence, in order to avoid sound
interference in a defective part of the file. The
mp3PRO file will be very slightly larger if this option
is chosen.
Allow intensity stereo coding: Setting this option
permits the use of a special type of that only saves
directional information and volume for high frequen-
cies. This option should normally be activated.
Allow downmix: This option makes it possible to
'downmix' the input signal from stereo to mono. This
has advantages when encoding a stereo source with
a very low data rate - and where encoding in mono
only would make sense.
Padding: Because mp3PRO blocks within an
mp3PRO file can be of different sizes and because
some mp3PRO player programs cannot cope with
MP3PRO different sized blocks, this option can be
selected to specify how to deal with mp3PRO blocks
of different size. The default setting with Nero is
'ISO', in other words, the procedure spelled out in
the ISO-MP3PRO standard. 'Always' and 'never', as
the names suggest, "top up" the differently sized
mp3PRO blocks (in every case or not at all).
Once you are satisfied with the settings, click on the
'OK' button to close the dialog or make additional
alterations to the expert settings.