4-channel panning of input signal.
in RTcmix/insts/jg
QPAN(outsk, insk, dur, AMP, XLOC, YLOC[, inputchan])
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.
| Param Field | Parameter | Units | Dynamic | Optional | Notes |
|---|---|---|---|---|---|
| p0 | output start time | seconds | no | no | |
| p1 | input start time | seconds | no | no | |
| p2 | duration | seconds | no | no | |
| p3 | amplitude multiplier | relative multiplier of input signal | yes | no | |
| p4 | X coordinate of virtual source | -1.0 - 1.0 | yes | no | -1: left, 1: right, 0.0: center] |
| p5 | Y coordinate of virtual source | -1.0 - 1.0 | yes | no | -1: back, 1: front, 0.0: center] |
| p6 | input channel | - | no | yes | default: 0 |
Parameters labled as Dynamic can receive dynamic updates from a table or real-time control source.
Author: John Gibson, 11/18/04
QPAN is a simple instrument to do quadraphonic panning.
The listener is in the center of the coordinate space, at [0,0]. Left-to-right panning (p4, “XLOC”) is from -1.0 to 1.0; back-to-front panning (p5 “YLOC”) is from -1.0 to 1.0.
The rtsetparams scorefile command should be set for 4 channels, and a sound card capable of sending out 4 independent audio streams is obviously required.
very basic:
rtsetparams(44100, 4)
load("WAVETABLE")
load("QPAN")
bus_config("WAVETABLE", "aux 0 out")
bus_config("QPAN", "aux 0 in", "out 0-3")
dur = 60
amp = 10000
freq = 440
wave = maketable("wave", 2000, 1)
line = maketable("line", 1000, 0,0, 1,1, 19,1, 20,0)
WAVETABLE(0, dur, amp * line, freq, 0, wave)
lag = 70
srcX = makeconnection("mouse", "X", -1, 1, 0, lag, "X")
srcY = makeconnection("mouse", "Y", -1, 1, 1, lag, "Y")
QPAN(0, 0, dur, 1, srcX, srcY)
maketable, makeconnection, DMOVE, MIX, MMOVE, MOVE, MPLACE, MROOM, NPAN, PLACE, QPAN, ROOM, SROOM STEREO