VerifyCD
compares a CD Audio with the master sound file available on your hard disk by
verifying that a burned CD premaster or the final pressed CD in fact has
identical sound data with the master file. The demo
version has full professional functionality but limited to 5 min comparison. Who needs this utility?
Everybody
who burns CD-Audio records and wants to make sure that the audio data is
correct! There is less error correction used for audio CDs than for normal
file system CDs and errors are likely to occur depending on the quality of
the CD-R medium. Without a utility like VerifyCD it is simply necessary to
listen to the whole record to make sure that there are no pops or glitches.
The situation is even worse since you may not notice an error because of the
error correction embedded in all CD players. VerifyCD makes sure that the
digital data on the disc is equal to the master file. Professional users like
CD manufacturing plants and Radio/TV stations are now using this as a quick,
reliable and inexpensive method. The
glasmastering plant will run a quality check of the CD measuring error rate
and pit geometry, so refer this part of the testing to them. You cannot do
error rate testing by listening since you are dependant on the CD player
used. The
product exists in two flavours – Normal and Professional. The difference in
functionality
User Experience
We have
numerous examples over the years that this utility has tracked a problem
while listening has not. This
software in its original form has been used since 1996 by www.sonoconsult.se, all records
mentioned under the recent_recordings tag and several more have been checked
by this procedure, no case where any listening session has found a problem
not found by VerifyCD exists. If you
get the message “Equal files” you do not need to listen. The digital data
representing the sound on the CD is identical to the master. The
software tries to re-sync after an error is found. This may not always succeed
if it takes considerable processing time. This is because the CD should be
rejected anyway as soon as an error is found. The use
of PREGAP and POSTGAP commands that puts silence before or after a track on
the CD is supported. This means that the files are considered equal even if
silence is inserted anywhere on the CD. The use
of VerifyCD should be sufficient in most cases in order to make sure that the
CD has the right sound stream, but many sound engineers still want to do a
final listen. The use of this utility saves time to track any clicks or pops
on the burned CD. The comparison only takes a few minutes on a modern PC or
MAC. Installation
VerifyCD
is 100% written in Java and will therefore run on all Java-supported
platforms (Java 1.3 or higher) – PC, MAC, Linux and more. The only
prerequisite is that the java runtime from SUN is installed. VerifyCD is one and only one file – VerifyCD.jar with a size less than 100 Kb and additional documentation. No other files are installed into system directories; no environment variables need to be set and the system registry is not touched.
Uninstallation is therefore a simple deletion of the installation directory. Quality
The
program is developed using Extreme Programming (www.extremeprogramming.org) .
We have a number of audio files in a test-bed accompanied by test programs
that specify most alternatives of input data and program results. This
test-bed verifies the coding. The use of extreme programming practices lowers
the risk of bugs to an absolute minimum. If you find a bug we will be happy
to receive two sound files (with minimum size) that reproduce the bug and
will consider to add them to our test achieve so that the bug is sure not to appear
in future releases. . |
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Usage
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The demo
version has full professional functionality but limited to 5 min comparison. |