Increasing this value is rarely needed (only when the input signal is very quiet); you can increase the value up to 4.0.
We recommend setting the input gain to no higher than 2.0 to avoid clipping.
Output level parameter:
#OUT_GAIN 2.0
The #OUT_GAIN parameter controls the output volume. Value-wise, this parameter works in the same way as
#IN_GAIN.
Output high-pass filter (HPF) settings:
#OUT_kHPF 0.05
#OUT_sHPF -1.0
The output shelving HPF is mixed in at a negative value. For proper operation, the #OUT_kHPF parameter’s value
needs to be in the 0.0 – 1.0 range; the typical value range is 0.003 (20Hz) to 0.05 (375Hz). The #OUT_sHPF
parameter controls filter effect depth (100% at -1.0, 50% at -0.5) and must always have a negative value in the -1.0 –
0.0 range.
Additive Synthesis Section
The incoming signal goes into a three-channel pitch shifting section: octave down, fifth up, octave up. Each of the
channels has its own LPF and can be mixed in with the dry signal (the latter can also be excluded from the mix).
Signal mixing block:
#MIX_OCTDN_VOL
1.0
#MIX_QUINT_VOL
0.8
#MIX_OCT_VOL
1.0
#MIX_CLEAN_VOL
0.4
The parameters in this block control the volumes of the dry signal and the generated ones: #MIX_OCTDN_VOL for the
lower octave, #MIX_QUINT_VOL for the fifth, #MIX_OCT_VOL for the upper octave, and #MIX_CLEAN_VOL for the dry
signal.
The recommended value range for each of these parameters is 0.0 (removed from the mix) to 2.0 (mixed in at +6dB).
Negative values are not supported.
Signal filtering block:
#MIX_OCTDN_kLPF
0.33
#MIX_QUINT_kLPF
0.1
#MIX_OCT_kLPF
0.1
The parameters in this block control the 6dB/Oct low-pass filters (LPF) of the pitch-shifted signals:
#MIX_OCTDN_kLPF for the lower octave, #MIX_QUINT_kLPF for the fifth, #MIX_OCT_kLPF for the upper octave. The
value range is 0.003 (20Hz) to 1.0 (12kHz). Negative values are not supported.
Filter Blocks
Each of the four filters has the same parameter set with values selected by the same principles. Filter-related
parameters start with #F1_, where 1 is the filter’s number in the signal chain.
The whole set of parameters for a single filter looks like this:
#F1_BLEND
1.0
#F1_SCALE
1.0
#F1_BIAS
0.0
#F1_MIX_LPF
1.0
#F1_MIX_HPF
0.0
#F1_MIX_BPF
0.0
#F1_Q
0.45
