The amount of process can result in subtle changes or drastic changes
depending on what the program is like and how much process is being added.
It will be easier to hear in material that is more open as opposed to material
that is very dense. The amount of low frequency information will also affect
how we hear the process.
DITHERING
The dither process in HEDD QUANTUM is proprietary to Crane Song. It is an
analog generated source that has been filtered to a spectrum where the ear is
least sensitive. We believe that this process sounds better than other systems
and is less likely to cause noise problems as compared to other dither sources.
The dither is added to the audio source as apposed to a digital process. This is
in our opinion the best way to dither an A/D convertor: Dithering happens in
the conversion.
It is also possible to add this dither to an existing audio source. Dither can be
added by running digital in, digital out and selecting the part of the Process
switch that is labeled 16-bit or 20-bit depending on what you want to dither
down to. To disable the dither just run the unit in 24-bit mode.
EXTERNAL WC SYNC
The external WC connections are for A/D convertor synchronization with
external devices. Word Clock does not affect the digital inputs since the digital
inputs provide their own clock information. The input WC connection is used to
synchronize the A/D convertor to an external source. The six new WC output
connections allow HEDD Quantum to be used as a master clock at the same
time that the AD and DA are being used and are set at the rate of the A/D
convertor whether internal or external clock is selected and can be used as a
sync source. Use HEDD Quantum as the master clock when ever possible.
When HEDD recognizes and locks to an external WC and WC is selected on the
front panel the LED by the sample rate switch lights up to indicate lock. If
there is no lock HEDD defaults to a 44.1 KHz sample rate.
METER
The metering on HEDD QUANTUM is very accurate and is calculated by the
DSP, following the HEDD process. The peak hold can be set to run in one of
two different modes. You can choose for it to be a 2 second hold after which
the peak indicator will drop back to a lower level. In the second mode the peak
value is held until the OVER RESET button is pressed.
