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VWAVE -- "vector" wavetable synthesis with arbitrary # of wavetables
in RTcmix/insts/bgg
## quick syntax:VWAVE(outsk, dur, PITCH, AMP, VECTOR, PAN, WAVE1, WAVE2, ... WAVEN)
CAPITALIZED parameters are pfield-enabled for table or dynamic control (see the maketable or makeconnection scorefile commands). Parameters after the [bracket] are optional and default to 0 unless otherwise noted. p0 = output start time (seconds) p1 = duration (seconds) p2 = pitch (Hz or oct.pc) p3 = amplitude (absolute, for 16-bit soundfiles: 0-32768) p4 = wavetable vector guide [0.0-1.0] p5 = pan (0-1 stereo; 0.5 is middle) p6... pn = wavetable references p2 (pitch), p3 (amplitude), p4 (wavetable vector guide) and p5 (pan) can receive dynamic updates from a table or real-time control source. p6... pn should be references to pfield table-handles. Author Brad Garton, 7/2007 (based on the very first digital instrument I (Brad) wrote for FORTRAN MIX in 1983 :-)). VWAVE
can fade between different wavetables aligned upon a 'vector' and controlled
by a dynamic pfield.
## Usage NotesVWAVE is essentially a simple wavetable oscillator, but the
wavetable being used can mix between an arbitrary number of user-created
waveforms (see the
maketable
scorefile command). Beginning with parameter p6 ("WAVE1", ...), VWAVE
arranges these along a 'vector' (nomenclature taken from commercial
synthesis techniques) that spans the range 0.0 to 1.0. As you select
indices along this vector using parameter p4 ("VECTOR"), the waveforms
used by VWAVE will fade from one to another depending upon how
many wavetables you have designated.
For example, if only two wavetables have been set (p6 and p7), then when
p4 is 0.0
Suppose five different waveforms have been designated for
Because p4 is
pfield-enabled,
this 'vector' can be dynamically controlled throughout the
The output of
## Sample Scoresvery basic:rtsetparams(44100, 1) load("VWAVE") w1 = maketable("wave", 1000, "sine") w2 = maketable("wave", 1000, "square3") w3 = maketable("wave", 1000, "saw") vec = maketable("line", 1000, 0,0, 1,1, 2,0) VWAVE(0, 3.5, 9.00, 20000, vec, 0, w1, w2, w3) slightly more advanced: rtsetparams(44100, 2) load("VWAVE") srand(14) // initialize array theWs = { 1, 2, 3, 4, 5, 6, 7, 8 } amp = 10000 for (i = 0; i < 8; i += 1) { theWs[i] = maketable("wave", 1000, random(), random(), random(), random()) } vec = makeLFO("sine", 2, 0, 1) pcurve = maketable("line", "nonorm", 1000, 0, 0, irand(1, 5), 0.005, irand(5, 10), 0.02) VWAVE(0, 8.7, 7.00+pcurve, amp, vec, 0, theWs[0], theWs[1], theWs[2], theWs[3], theWs[4], theWs[5], theWs[6], theWs[7]) for (i = 0; i < 8; i += 1) { theWs[i] = maketable("wave", 1000, random(), random(), random(), random(), random(), random(), random()) } vec = makeLFO("sine", 0.3, 0, 1) pcurve = maketable("line", "nonorm", 1000, 0, 0, irand(1, 5), 0.005, irand(5, 10), 0.02) VWAVE(0.1, 8.7, 7.00+pcurve, amp, vec, 1, theWs[0], theWs[1], theWs[2], theWs[3], theWs[4], theWs[5], theWs[6], theWs[7]) ampenv = maketable("window", 1000, "hanning") for (i = 0; i < 8; i += 1) { theWs[i] = maketable("wave", 1000, random(), random(), random(), random()) } vec = makeLFO("sine", 0.2, 0, 1) pcurve = maketable("line", "nonorm", 1000, 0, 0, irand(1, 5), 0.005, irand(5, 10), 0.02) VWAVE(3, 8.7, 6.07+pcurve, amp*ampenv, vec, 1, theWs[0], theWs[1], theWs[2], theWs[3], theWs[4], theWs[5], theWs[6], theWs[7]) for (i = 0; i < 8; i += 1) { theWs[i] = maketable("wave", 1000, random(), random(), random(), random(), random(), random(), random()) } vec = makeLFO("sine", 4, 0, 1) pcurve = maketable("line", "nonorm", 1000, 0, 0, irand(1, 5), 0.005, irand(5, 10), 0.02) VWAVE(3.14, 8.7, 6.07+pcurve, amp*ampenv, vec, 0, theWs[0], theWs[1], theWs[2], theWs[3], theWs[4], theWs[5], theWs[6], theWs[7]) ## See Alsomaketable, makeLFO, AMINST, FMINST, HALFWAVE, MULTIWAVE, SYNC, WAVESHAPE, WAVY, WIGGLE |