Block Diagram Of One Channel Of Quantize+Flange.; Parameters For Quantize + Flange - Kurzweil K2600 Musician’s Reference

quantized (its word length is being shortened), quantization usually sounds like additive noise. But notice
that as the signal decays in the above Þgures, fewer and fewer quantization levels are being exercised
until, like the one bit example, there are only two levels being toggled. With just two levels, your signal has
become a square wave.
Controlling the bit level of the quantizer is done with the DynamRange parameter (dynamic range). A 0
dB we are at a one bit word length. Every 6 dB adds approximately one bit, so at 144 dB, the word length is
24 bits . The quantizer works by cutting the gain of the input signal, making the lowest bits fall off the end
of the word. The signal is then boosted back up so we can hear it. At very low DynamRange settings, the
step from one bit level to the next can become larger than the input signal. The signal can still make the
quantizer toggle between bit level whenever the signal crosses the zero signal level, but with the larger bit
levels, the output will get louder and louder. The Headroom parameter prevents this from happening.
When the DynamRange parameter is lower than the Headroom parameter, no more signal boost is added
to counter-act the cut used to quantize the signal. Find the DynamRange level at which the output starts to
get too loud, then set Headroom to that level. You can then change the DynamRange value without
worrying about changing the signal level. Headroom is a parameter that you set to match your signal
level, then leave it alone.
At very low DynamRange values, the quantization becomes very sensitive to dc offset. It affects where
your signal crosses the digital zero level. A dc offset adds a constant positive or negative level to the signal.
By adding positive dc offset, the signal will tend to quantize more often to a higher bit level than to a lower
bit level. In extreme cases (which is what weÕre looking for, after all), the quantized signal will sputter, as it
is stuck at one level most of the time, but occasionally toggles to another level.
A ßanger with one LFO delay tap and one static delay tap follows the quantizer. See the section on multi-
tap ßangers (Flanger1 and Flanger2) for a detailed explanation of how the ßanger works.
Input
Quantizer
Figure 10-31

Block diagram of one channel of Quantize+Flange.

Quant W/D is a wet/dry control setting the relative amount of quantized (wet) and not quantized (dry)
signals being passed to the ßanger. The Flange W/D parameter similarly controls the wet/dry mix of the
ßanger. The dry signal for the ßanger is the wet/dry mix output from the quantizer.

Parameters for Quantize + Flange

Page 1
In/Out In or Out
Quant W/D 0 to 100%
Flange W/D -100 to 100%
Dry
Wet
Dry
Wet
Flanger
Out Gain Off, -79.0 to 24.0 dB
DynamRange 0 to 144 dB
dc Offset -79.0 to 0.0 dB
Headroom 0 to 144 dB
KDFX Reference
KDFX Algorithm Specifications
Out Gain
Output
10-81