Cubic spline dynamic pitch-shifter.
in RTcmix/insts/std
MOCKBEND(outsk, insk, dur, amp, pitchenvgenno[, inputchan, pan])
| Param Field | Parameter | Units | Dynamic | Optional | Notes |
|---|---|---|---|---|---|
| p0 | output start time | seconds | no | no | |
| p1 | input start time | seconds | no | no | |
| p2 | output duration (or endtime if negative) | seconds | no | no | |
| p3 | amplitude multiplier | relative multiplier of input signal | no | no | |
| p4 | function table number for pitch envelope | - | no | no | |
| p5 | input channel | - | no | yes | default: 0 |
| p6 | percent to left | - | no | yes | default: .5 |
Because this instrument has not been updated for pfield control, the older makegen control envelope sysystem should be used:
Assumes function table 1 is the amplitude envelope
Author: Ivica Ico Bukvic (based on Doug Scott’s TRANSBEND instrument)
MOCKBEND performs a time-varying pitch transposition on a mono input signal (channel-selectable) using cubic spline interpolation
MOCKBEND is a version of TRANSBEND designed to work with real-time input sources, such as a microphone or aux bus. It processes only one channel at a time.
MOCKBEND uses the older makegen control envelope system to specify the pitch-transposition envelope. It uses the function table specified by p4 for this data. The interval values in this table are expressed in linear octaves (makegen(2, …) is probably best for this).
MOCKBEND can produce either mono or stereo output.
basic use:
rtsetparams(44100, 2)
load("MOCKBEND")
rtinput("mysoundfile.aif")
dur = DUR(0)
amp = 1.5
pan = 0.5
/* amplitude curve */
setline(0,0, 1,1, 90,1, 100,0)
/* transpose from 4 semitones up to 8 down - stored in gen slot 2 */
makegen(-2, 18, 512, 1,.4, 512,-.8)
MOCKBEND(0, 0, dur, amp, 2, 0, pan)