56 lines
1.4 KiB
Lua
56 lines
1.4 KiB
Lua
ardour {
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["type"] = "dsp",
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name = "ACE Noise",
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category = "Utility",
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license = "MIT",
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author = "Ardour Community",
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description = [[Noise Generator featuring either white noise with uniform or gaussian distribution, or pink-noise. The signal level can be customized.]]
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}
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function dsp_ioconfig ()
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return
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{
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-- -1, -1 = any number of channels as long as input and output count matches
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{ audio_in = -1, audio_out = -1},
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}
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end
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function dsp_params ()
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return
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{
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{ ["type"] = "input", name = "Noise Level", min = -80, max = 0, default = -18, unit="dBFS"},
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{ ["type"] = "input", name = "Noise Type", min = 0, max = 2, default = 0, enum = true, scalepoints =
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{
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["White Noise"] = ARDOUR.DSP.NoiseType.UniformWhiteNoise,
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["Gaussian White Noise"] = ARDOUR.DSP.NoiseType.GaussianWhiteNoise,
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["Pink Noise"] = ARDOUR.DSP.NoiseType.PinkNoise,
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}
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},
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}
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end
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local cmem = nil
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local gen = nil
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local noise = 0
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function dsp_init (rate)
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cmem = ARDOUR.DSP.DspShm (8192)
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gen = ARDOUR.DSP.Generator ()
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end
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function dsp_run (ins, outs, n_samples)
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local ctrl = CtrlPorts:array()
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local lvl = ARDOUR.DSP.dB_to_coefficient (ctrl[1])
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if (noise ~= ctrl[2]) then
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noise = ctrl[2]
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gen:set_type (noise)
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end
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for c = 1,#ins do
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if ins[c] ~= outs[c] then
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ARDOUR.DSP.copy_vector (outs[c], ins[c], n_samples)
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end
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gen:run (cmem:to_float(0), n_samples)
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ARDOUR.DSP.mix_buffers_with_gain (outs[c], cmem:to_float(0), n_samples, lvl)
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end
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end
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