JOPLIN M
K
II
384
k
H
z
/32bit ANALOG-TO-DIGITAL CONVERTER
REVISION P
R
A – FEBRUARY 2015
Copyright © 2015, M2Tech Srl
47
M2Tech
www.m2tech.biz
frequency, the larger the files produced when recording the data out of the ADC, but
also the higher the sound quality. Thus, the choice of the sampling frequency is a
trade-off between disk usage and quality.
On the other hand, when using the
JOPLIN MKII
to drive a digital amplifier, a DAC or a
streaming player for real-time playback, the best choice is always the highest
sampling frequency possible.
NOTE: The sampling frequency set by the user via the menu is used when the
JOPLIN MKII
JOPLIN MKII
JOPLIN MKII
JOPLIN MKII
is not connected to any computer, otherwise the parameter is
ignored and the actual sampling frequency is the one set by the computer
audio control panel or by the recorder program. The value set via the menu is
restored as soon as the computer is disconnected from the
JOPLIN MKII
JOPLIN MKII
JOPLIN MKII
JOPLIN MKII
or it is
shutdown.
NOTE: the highest sampling frequencies available (352.8kHz and 384kHz) are
not settable by the user via the menu. This is because in standalone use the
only usable outputs are the S/PDIF, AES/EBU and Toslink™ ones, which
cannot operate at sampling frequencies higher than 192kHz.
8.3.4. Resolution
The
JOPLIN MKII
can operate at the following resolutions: 16 bits, 20 bits, 24 bits, 32
bits. As for the sampling frequency, the higher the resolution, the larger the files
produced when recording from the source but also the higher the sound quality.
The ADC works natively at 32 bits. Thus, when a lower resolution is chosen, it is
necessary to get rid of some bits from each sample acquired by the ADC. This
operation generates distortion in the sound.
