<CsoundSynthesizer>
<CsOptions>
-odac
</CsOptions>
<CsInstruments>
sr = 44100
ksmps = 32
nchnls = 2
0dbfs = 1

  instr 1; expon envelope
iEndVal  =        p4 ; variable 'iEndVal' retrieved from score
aEnv     expon    1, p3, iEndVal
aSig     poscil   aEnv, 500
         out      aSig, aSig
  endin

</CsInstruments>
<CsScore>
;p1  p2 p3 p4
i 1  0  1  0.001
i 1  1  1  0.000001
i 1  2  1  0.000000000000001
e
</CsScore>
</CsoundSynthesizer>
;example by Iain McCurdy
