Data Conversion Systems dCS Puccini U-Clock, User Manual

Page: 8 / 15

dCS Puccini U-Clock User Manual Software Issue 1.0x
October 2008
Filename: Puccini U-Clock Manual v1_0x.doc
Page 8
English version
Setting up the USB source
The USB interface can be connected to a Windows
TM
Vista or XP PC, Apple Mac
TM
OSX systems or
sound server, running software to generate PCM data.
If you do not want to use a USB source, go to the next page.
A word about Music Playing Software
There are countless programs that can play music on Windows
TM
PC and Apple Mac
TM
OSX systems.
Unfortunately, not all of them present the data completely unprocessed to the USB ports. For
example, Windows Media Player re-samples all data to 24 bits, albeit at the original sample rate,
whilst iTunes rate converts data as necessary to the output sample rate set in the OSX Audio set-up
panel.
With such a proliferation of playing software, and with updates being issued daily, it is impossible for
dCS
to be fully up-to-date with the behaviour and performance of all programs. If you have questions
or problems, we would urge you to take them up with your software vendor. What we will say is that
different programs operate very differently and it is well worth finding out exactly how your particular
program processes the audio.
One particular problem that has been identified and is worthy of note, concerns the popular iTunes
program when running on Windows systems. The default output word length is 16 bits and must be
changed to 24 bits for correct operation. To do this, click on “
Start ” > “ Control Panel ” > “ Quicktime ”.
Click on the “ Audio ” tab of the Quicktime panel and select “ 24 bit ” in the “ Size ” field of the “ Sound
Out ” section.
Selecting the
Puccini U-Clock
as your Audio Output device
Whichever program you are using to play your music, your computer may not automatically select
your
U-Clock
as the preferred playback device. You can correct this as follows :
Windows XP - Once you have connected the
U-Clock
and switched it on, go to “ Start ” > “ Control
Panel ” > “ Sounds and Audio devices ”. Click on the “ Audio ” tab and select “ dCS Puccini ” from the
drop down list in the “ Sound Playback ” Default device list.
Windows Vista - Once you have connected the
U-Clock
and switched it on, go to “ Start ” > “ Control
Panel ” > “ Hardware and Sound ” > “ Sound ” and click on the “ Playback ” tab of the panel that
appears. “ dCS Puccini ” will appear in the list of available devices. For best results, set the “ Sample
Rate ” to be the same as that of the file.
Apple Mac
TM
OSX - Once you have connected the U-Clock and switched it on, open “ Finder ”, click
on the “ Go ” tab and select “ Utilities ”. In the Utilities panel, select “ Audio MIDI Setup ” and click on
“ Audio Devices ” in the Audio MIDI setup panel. Select “ dCS Puccini ” from the drop down list in the
“ System Output ” section. You can also set “ dCS Puccini ” as the default output from the same panel.
For best results, set the “ Sample Rate ” to be the same as that of the file.