Ds - Double Speed - Steinberg NUENDO 8 I/O 96k Mode D'emploi

DS - Double Speed

When activating the Double Speed mode the Nuendo 8 I/O 96k operates at double
sample rate. The internal clock 44.1 kHz turns to 88.2 kHz, 48 kHz to 96 kHz. With this
the device is able to process even ultra-sound above 40 kHz at its analog inputs and
outputs. AD/DA-converter and COPY mode still use full 24 bit resolution.
The ADAT optical interface does not support sample rates above 48 kHz. Therefore the
converter uses a Sample Split method, which operates similar to the BIT SPLIT func-
tion. Single channel data is split to 2 channels according to the following table:
Original 1 2 3 4 5 6 7 8
DS Signal 1/2 3/4 5/6 7/8 1/2 3/4 5/6 7/8
Port MAIN MAIN MAIN MAIN AUX AUX AUX AUX
This method of transmitting double speed data at single speed is known as 'double
wire' throughout the professional audio world, and also known under the name 'S/
MUX' regarding ADAT interfaces. Tascam also uses this method in their latest DTRS re-
corder DA-98HR, but calls it 'Dual Line'.
The table is valid for all directions (AD / DA / DD). As the AUX port is already used for
DS the function BIT SPLIT is not available simultaneously.
As the transmission of double rate signals is done at standard sample rate (Single
Speed) the word clock output still delivers 44.1 kHz or 48 kHz. The same is true for the
word clock input, where only 44.1 kHz or 48 kHz are expected.
❐
The wordclock input and output as well as all ADAT and TDIF ports always operate in Sin-
gle Speed mode only. At 96 kHz, the word clock output will therefore be a 48 kHz signal.
The TDIF interface of the Nuendo 8 I/O 96k also supports the 'Double Wire' technique. This
allows a recording with up to 96 kHz at halfed track numbers with every (!) DTRS device.
NUENDO 8 I/O 96k
16 bit Operation and Dither 37