metro2
metro2 — Trigger Metronome with Swing and Accents
Initialization
iamp - off-beat click amplitude
initphase - initial phase value (in the 0 to 1 range)
Performance
ktrig - output trigger signal
kfreq - frequency of trigger bangs in cps
kswing - value (in the 0 to 1 range)
metro2 is a modification of 'classic' metro opcode with additional swinging. The swinging clicks can be modulated at k-rate. Also, swinging clicks can have their own amplitude value set by iamp.
![[Note]](images/note.png)
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Note |
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metro2 as well as metro will produce a trigger signal of 1 when its phase is exactly 0 or 1. If you want to skip the initial trigger, use a very small value like 0.00000001. |
Examples
Here is an example of the metro2 opcode. It uses the file metro2.csd
Example 589. Example of the metro2 opcode.
<CsoundSynthesizer> <CsOptions> -odac ; for RT audio </CsOptions> <CsInstruments> sr = 44100 ksmps = 16 nchnls = 2 0dbfs = 1.0 ga1 init 0 ; delay aux instr 1 ; main triggering instrument kndx init 0 kndx2 init -1 ; the clicks are 1/16th notes @ 137 BPM kT metro2 (4*137/60), p4, -1 if (kT == 0) goto Halt k1 table kndx, 1, 0, 0, 1 kndx += 1 if (k1 == 0) goto Next event "i", 2, 0, 0.35, k1 Next: ; positive amplitude values of down-beat clicks ; are used to trigger kick (instr 3) if (kT < 1) goto Halt kndx2 += 1 kndx2 wrap kndx2, 0, 2 if kndx2 != 0 goto Halt event "i", 3, 0, 0.2 Halt: endin instr 2 ; simple subtractive bass kAE linsegr 0, 0.005, 1, p3/2, .7, .04, 0, .04, 0 kFE linsegr 1, 0.005, 2, p3/2, .7, .04, .1, .04, .1 ifr = cpspch(p4) a1 vco2 1, ifr a2 vco2 1, ifr * 1.005 a3 vco2 1, ifr * 0.993 aM = (a1+a2+a3)/3 aM moogvcf aM*kAE, 1000 * kFE, 0.5 outs aM, aM ga1 += aM * 0.25 endin instr 3 ; simple techno kick k1 linseg 200, p3, 10 k2 linseg 0,0.001,1,0.25,0 a1 oscil 0.3*k2, k1 outs a1,a1 endin instr 99 ; feedback delay for bass a1 delayr 0.5 ab deltap 0.33 delayw ga1 + ab*0.3 outs ab,ab ga1 = 0 endin </CsInstruments> <CsScore> t 0 137 ; ftable1 is the bass sequence to played with various swings f1 0 16 -2 6.00 0 0 7.00 0 0 6.00 0 6.00 0 0 7.00 0 7.01 6.00 0 ; 4 measure pattern of different swinging i1 0 16 0.5 i1 + . 0.65 i1 + . 0.4 i99 0 46 </CsScore> </CsoundSynthesizer>