linrand — Linear distribution random number generator (positive values only).
Linear distribution random number generator (positive values only). This is an x-class noise generator.
krange -- the range of the random numbers (0 - krange). Outputs only positive numbers.
For more detailed explanation of these distributions, see:
C. Dodge - T.A. Jerse 1985. Computer music. Schirmer books. pp.265 - 286
D. Lorrain. A panoply of stochastic cannons. In C. Roads, ed. 1989. Music machine . Cambridge, Massachusetts: MIT press, pp. 351 - 379.
Here is an example of the linrand opcode. It uses the file linrand.csd.
Example 424. Example of the linrand opcode.
See the sections Real-time Audio and Command Line Flags for more information on using command line flags.
<CsoundSynthesizer> <CsOptions> ; Select audio/midi flags here according to platform -odac ;;;realtime audio out ;-iadc ;;;uncomment -iadc if RT audio input is needed too ; For Non-realtime ouput leave only the line below: ; -o linrand.wav -W ;;; for file output any platform </CsOptions> <CsInstruments> sr = 44100 ksmps = 32 nchnls = 2 0dbfs = 1 instr 1 ; every run time same values klin linrand 100 printk .2, klin ; look aout oscili 0.8, 440+klin, 1 ; & listen outs aout, aout endin instr 2 ; every run time different values seed 0 klin linrand 100 printk .2, klin ; look aout oscili 0.8, 440+klin, 1 ; & listen outs aout, aout endin </CsInstruments> <CsScore> ; sine wave f 1 0 16384 10 1 i 1 0 2 i 2 3 2 e </CsScore> </CsoundSynthesizer>
Its output should include a line like this:
i 1 time 0.00033: 13.54770
i 1 time 0.20033: 32.38746
i 1 time 0.40033: 47.69304
i 1 time 0.60033: 19.82218
i 1 time 0.80033: 42.98293
i 1 time 1.00000: 81.13174
i 1 time 1.20033: 47.39585
i 1 time 1.40033: 12.53248
i 1 time 1.60033: 35.70722
i 1 time 1.80000: 65.25774
i 1 time 2.00000: 23.24811
Seeding from current time 392575384
i 2 time 3.00033: 23.05609
i 2 time 3.20033: 76.15114
i 2 time 3.40033: 22.78861
i 2 time 3.60000: 0.79064
i 2 time 3.80033: 43.49438
i 2 time 4.00000: 34.10963
i 2 time 4.20000: 31.88702
i 2 time 4.40033: 59.78054
i 2 time 4.60033: 4.96821
i 2 time 4.80033: 24.69674
i 2 time 5.00000: 21.88815