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vividshaper_reference_manual [2024/12/27 14:17] – larsvividshaper_reference_manual [2025/01/09 21:31] (current) – lars
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 ====== VividShaper Reference Manual ====== ====== VividShaper Reference Manual ======
  
-VividShaper is a wavetable AUv3 plugin synthesizer, where each wavetable consists of 128 samples. Instead of having a fixed number of wavetables to choose from, VividShaper allows you to program your own waves using the built in Lua programming language and change them over time.+VividShaper is a wavetable AUv3 plugin synthesizer, where each wave consists of 128 samples. Instead of having a fixed number of waves to choose from, VividShaper allows you to program your own waves using the built in Lua programming language and change them over time.
  
-The Lua-code is called many times per second. Default is 93.75 times/second, meaning it is updating after 512 frames at 48000 Hz sample rate. This can be changed as well (128 = 375 times/sec, 256, 512, 1024, 2048, and 4096 ≈ 12 times/sec). This allows the wavetable to be programmatically changed in realtime.+The Lua-code is called many times per second. This allows the waves to be programmatically changed in realtime. Default is 93.75 times/second, meaning it is updating after 512 frames at 48000 Hz sample rate. This can be changed as well (128 = 375 times/sec, 256, 512, 1024, 2048, and 4096 ≈ 12 times/sec). 
  
 There are up to eight generators for polyphony (the number of generators can be set from 1 to 8). Each generator has in turn up to eight oscillators. Each oscillator has the following states that can be manipulated in Lua-code: There are up to eight generators for polyphony (the number of generators can be set from 1 to 8). Each generator has in turn up to eight oscillators. Each oscillator has the following states that can be manipulated in Lua-code:
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    * left-right panning    * left-right panning
    * note (including cent note)    * note (including cent note)
 +   * pitch bend information
    * A wave table array containing 128 samples    * A wave table array containing 128 samples
  
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 vol[1] = VSADSRE(1,1,0.8,3,0,gatetimeon,gatetimeoff) vol[1] = VSADSRE(1,1,0.8,3,0,gatetimeon,gatetimeoff)
 active = vol[1] > 0.00001 active = vol[1] > 0.00001
 +pitchbend = pitchbend*2
 </code> </code>
  
-This example encapsulates the fundamental process of generating a wave and setting its volume envelope in VividShaper. The line **wave[1] = VSTriangle(1,0)** creates a triangle wave at the base frequency of 1 Hz and phase of 0 degrees (between 0-360 degrees). You need to provide both arguments even if you are not phase shifting the wave. The frequency here refers to the number of complete cycles of the Triangle wave form that fits within the sample (consisting of 128 sample points). A frequency of 1 Hz means one complete cycle of the triangle fits within the 128 samples.+This example shows the process of generating a wave and setting its volume envelope in VividShaper. The line **wave[1] = VSTriangle(1,0)** creates a triangle wave at the base frequency of 1 Hz and phase of 0 degrees (between 0-360 degrees). You need to provide both arguments even if you are not phase shifting the wave. The frequency here refers to the number of complete cycles of the Triangle wave form that fits within the sample (consisting of 128 sample points). A frequency of 1 Hz means one complete cycle of the triangle fits within the 128 samples.
  
 This is not the playback frequency of the note (i.e. which note that is being played). The speed of the 128 samples is determined by note[1] for oscillator 1. We don't have to set note[1] explicitly, it is already set by the note you are playing on the keyboard. However, if we do wish to change it, for instance transposing one octave, we can do so by setting: **note[1] = notein+12**. Alternatively, if we wish to set it to a constant value, making it play back the same note even if play another note, we could do that as well: **note[1] = 40**. This is not the playback frequency of the note (i.e. which note that is being played). The speed of the 128 samples is determined by note[1] for oscillator 1. We don't have to set note[1] explicitly, it is already set by the note you are playing on the keyboard. However, if we do wish to change it, for instance transposing one octave, we can do so by setting: **note[1] = notein+12**. Alternatively, if we wish to set it to a constant value, making it play back the same note even if play another note, we could do that as well: **note[1] = 40**.
 +
 +The pitch bend value comes from your keyboard and will be added to the note value for each oscillator after the Lua code has finished. This value is stored in the variable pitchbend, which goes from -2 to +2 (i.e. 2 semi-notes). If note[1] == 40 for oscillator 1 and pitchbend == 0.53, the final note value used to play the note will be 43.53. If you want to turn off pitch bend, you can set pitchbend = 0 anywhere in your code. if you want to pitch bend from -4 to +4, you can just multiply it by 2 (pitchbend = pitchbend *2). This is done in the example above. You can also use the pitch bend value to modulate e.g. something else first, then set it to zero if you don't want it to also bend the notes.
  
 The volume will then be set to an exponential volume ADSR envelope, with attack=1 sec, decay=1 sec, sustain=0.8, release=3 sec, startlevel=0. The name of the wave table will be "A simple example". The volume will then be set to an exponential volume ADSR envelope, with attack=1 sec, decay=1 sec, sustain=0.8, release=3 sec, startlevel=0. The name of the wave table will be "A simple example".
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 -- Input information -- Input information
 notein         -- The current input note for the active generator. notein         -- The current input note for the active generator.
 +pitchbend      -- The pitch bend data, from -2 to 2.
 tempo          -- Current tempo (beats per second, e.g. 120). tempo          -- Current tempo (beats per second, e.g. 120).
 timesignnum    -- Time signature numerator, e.g. 3 for three beats per bar (3/4). (Next version) timesignnum    -- Time signature numerator, e.g. 3 for three beats per bar (3/4). (Next version)
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 -- Output information -- Output information
 +pitchbend      -- The pitchbend is sent back as output information. Set it to zero if you don't want it to pitch bend the notes.
 wave[x]        -- Wave array x (one array for each oscillator x, 128 elements). wave[x]        -- Wave array x (one array for each oscillator x, 128 elements).
 panning[x]     -- Panning for oscillator x (between 0 - 1; 0 = left, 0.5 = middle, 1= right). panning[x]     -- Panning for oscillator x (between 0 - 1; 0 = left, 0.5 = middle, 1= right).
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 midigenerator  -- A value true/false. A true value means only one generator will be running and it cannot turn off. midigenerator  -- A value true/false. A true value means only one generator will be running and it cannot turn off.
  
--- Delay output information (upcoming feature in v1.3)+-- Coming soon in a future version (v1.4 probably) 
 +sample[x]      -- Set oscillator x to a specific sample, e.g. sample[1] = "alien" 
 +loopstart[x]   -- Set loop start point as value between 0 - 1 
 +loopend[x]     -- Set loop end point as value between 0 - 1 
 +sxfade[x]      -- Sample cross fade 
 +svol[x]        -- Volume output for sample playback 
 + 
 +-- Delay output information
 delay1[x]      -- Delay1 parameters: delay1[x]      -- Delay1 parameters:
                --   delay1[1] = own feedback (value from 0 - 1)                --   delay1[1] = own feedback (value from 0 - 1)
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 lfo = VSLFOSquare(frequency,phase,width,time) -- width is between 0 to 1 lfo = VSLFOSquare(frequency,phase,width,time) -- width is between 0 to 1
  
--- Helper function to remove negative values+-- Helper functions to remove negative values (Rect = rectify)
 output = VSRect(input)  -- Input is a scalar value output = VSRect(input)  -- Input is a scalar value
 wave[x] = VSRect(wave[x]) -- Input is a wave array wave[x] = VSRect(wave[x]) -- Input is a wave array
 +
 +-- Helper functions for delays
 +VSPingPong(feedback,time)     -- This function sets the delay variables needed for ping pong delay.
 +VSStereoDelay(feedback,time)  -- This function sets the delay variables needed for a stereo delay.
 +VSMonoDelay(feedback,time)    -- This function sets the delay variables needed for a mono delay.
 +
 +
  
 -- Envelopes -- Envelopes
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 wave[x] = VSBiquad(wave[x],biquadcoeff)               -- Apply filter on wave using quadfilter settings wave[x] = VSBiquad(wave[x],biquadcoeff)               -- Apply filter on wave using quadfilter settings
  
--- MIDI output (coming soon - not available in this version!)+-- MIDI output
 -- VSTick is a help function to determine if the beat position crosses a certain time interval. -- VSTick is a help function to determine if the beat position crosses a certain time interval.
 -- For instance, if length=1/4 (corresponding to a quarter note), VSTick will return true every time -- For instance, if length=1/4 (corresponding to a quarter note), VSTick will return true every time
vividshaper_reference_manual.1735305464.txt.gz · Last modified: 2024/12/27 14:17 by lars

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