KVR: A couple of Spectral Conquest scripts

Just to give a flavour of what can be done.

First, a modified low pass filter (as built-in to the plug-in) but with an LFO. Param 3 is the LFO rate, and Param 4 is the depth.

local lfoT = 0
local function scriptedBrickWallLPFWithLFO( state )
local maxBin = state.maxBin
local cutoff = state.param2 * maxBin
local frequency = 0.1 + state.param3 * 10
local twopi = 2 * math.pi
lfoT = lfoT + twopi * frequency * (maxBin-1)/44100
while lfoT >= twopi do
   lfoT = lfoT - twopi
end
local lfo = state.param4 * maxBin * math.sin( lfoT )
cutoff = cutoff + lfo
cutoff = math.max( cutoff, 0 )
local zeroBin = zeroBin
for i=cutoff,maxBin,1 do
   zeroBin( i )
end
end

addSpectralScript( "LFO Low Pass", scriptedBrickWallLPFWithLFO )

Secondly, a 'freeze' script. Param 2 freezes the spectrum when it's non-zero. Works best when the FFT size is set to 4096.

local frozen = 0
local frozenStateRe = { 1 }
local frozenStateIm = { 1 }
local function scriptedFreeze( state )
local maxBin = state.maxBin
if frozen == 1 then
   if state.param2 == 0 then
      frozen = 0
   else
      local setBin = setBin
      for i=0,maxBin,1 do
         setBin( i, frozenStateRe[i], frozenStateIm[i] )
      end
   end
elseif state.param2 > 0 then
   frozen = 1
   local getBin = getBin
   for i=0,maxBin,1 do
      re, im = getBin( i )
      frozenStateRe[i] = re
      frozenStateIm[i] = im
   end
end
end

addSpectralScript( "Freeze", scriptedFreeze )

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