TVSPECTACLE

This inst is under development. It's likely that it will undergo changes that make things sound different.

p-fields:

/* TVSPECTACLE - FFT-based delay processor with time-varying properties

   p0  = output start time
   p1  = input start time
   p2  = input duration
   p3  = amplitude multiplier
   p4  = ring-down duration
   p5  = FFT length (power of 2, usually 1024)
   p6  = window length (power of 2, usually FFT length * 2)
   p7  = window type (0: Hamming; see below for others)
   p8  = overlap - how much FFT windows overlap (any power of 2)
         1: no overlap, 2: hopsize=FFTlen/2, 4: hopsize=FFTlen/4, etc.
         2 or 4 is usually fine; 1 is fluttery; the higher the more CPU time
   p9  = wet/dry mix (0: dry -> 1: wet) [optional, default is 1]
   p10 = input channel [optional, default is 0]
   p11 = percent to left channel [optional, default is .5]

   The following function tables control amplitude.

      Function table 1 is the input amplitude, spanning just the input
         duration.
      Function table 2 is the output amplitude, spanning the entire
         note, including ring-down duration.

   The following function tables control EQ, delay time, and delay feedback
   for all the frequency bands of the FFT.  Think of them as curves on a
   graph with frequency on the x axis and amplitude, delay time or feedback
   on the y axis.

      Function table 3 is EQ table A (i.e., amplitude scaling of each band),
         in dB (0 dB means no change, + dB boost, - dB cut).
      Function table 4 is delay time table A.
      Function table 5 is delay feedback table A.  Values > 1 are dangerous!
      Function table 6 is EQ table B.
      Function table 7 is delay time table B.
      Function table 8 is delay feedback table B.

   These tables control the movement between the A and B tables described
   above.  The values should be in the range [0, 1]; if not, the instrument
   prints a warning and pins the values to that range.  A value of 0 means
   to read only from table A; a value of 1, from table B; and values in
   between 0 and 1 request linear interpolation between the two tables.

      Function table 9 describes the curve between EQ tables A and B.
      Function table 10 describes the curve between delay time tables A and B.
      Function table 11 describes the curve between delay feedback tables A
         and B.

   NOTES:

      p7 - window type:
            0: Hamming, 1: Hanning, 2: Rectangle, 3: Triangle, 4: Blackman,
            5: Kaiser
           When in doubt, use Hamming.

      p8 - overlap:
            1: no overlap, 2: hopsize=FFTlen/2, 4: hopsize=FFTlen/4, etc.
            2 or 4 is usually fine; 1 is fluttery; higher overlaps use more CPU.
            Also possible to use negative powers of 2, e.g., .5, .25, .125, etc.
            This leaves a gap between successive FFTs, creating ugly robotic
            effects -- beware of clipping.

      p9 - wet/dry mix:
            This is pre-EQ.
*/