kAverageAmp -- Average amplitude value of vibrato
kAverageFreq -- Average frequency value of vibrato (in cps)
vibr is an easier-to-use version of vibrato. It has the same generation-engine of vibrato, but the parameters corresponding to missing input arguments are hard-coded to default values.
Here is an example of the vibr opcode. It uses the files vibr.orc and vibr.sco.
Example 412. Example of the vibr opcode.
/* vibr.orc */ ; Initialize the global variables. sr = 44100 kr = 4410 ksmps = 10 nchnls = 1 ; Instrument #1. instr 1 ; Create a vibrato waveform. kaverageamp init 7500 kaveragefreq init 5 ifn = 1 kvamp vibr kaverageamp, kaveragefreq, ifn ; Generate a tone including the vibrato. a1 oscili 10000+kvamp, 440, 2 out a1 endin /* vibr.orc */
/* vibr.sco */ ; Table #1, a sine wave for the vibrato. f 1 0 256 10 1 ; Table #1, a sine wave for the oscillator. f 2 0 16384 10 1 ; Play Instrument #1 for 2 seconds. i 1 0 2 e /* vibr.sco */