Other examples in "-da.tryCsoundObjects" demonstrate modifications of Csound argument values caused by performance controls. Try for instance:

_pitchrange(200) _pitchcont _volumecont _volume(30) _pitchbend(0) a C4 D4 b c _pitchbend(100) _volume(127)

containing sound-objects 'a', 'b', 'c' and simple notes 'C4' and 'D4'. Simple notes are set on the default MIDI channel 1 which is also assigned instrument 1 as shown in "-cs.tryCsoundObjects".

The graphic score is shown Fig.38.

The different instruments called to perform the resulting sequence of events have various ways of dealing with pitchbend and volume controls. For instance, instruments 3 and 4 do not control pitchbend continuously but they take the current value as argument 5 converted to frequency ratios in particular ranges. Instruments 1 and 2 accept continuous pitchbend controls expressed in cents. Volume is only taken in consideration by instruments 1 and 2.

The output score looks clumsy because of the diverse argument formats used by instruments for this demo.

t 0.000 60.000

i1 0.000 0.250 4.05 30.000 34.850 0.000 -10.000 -4.500 0.000 ;F0

i1 0.000 0.250 4.05 30.000 34.850 0.000 -10.000 -4.500 0.000 ;F0

i2 0.750 0.250 5.05 6.499 11.999 44.550 49.400 0.000 0.000 0.000 ;F1

i3 0.750 0.100 643.50 1.005 ;D#6

i1 1.000 1.000 8.00 49.400 68.800 0.000 12.000 34.000 0.000 ;C4

i3 2.840 0.800 461.34 1.069 ;A5

i4 2.940 0.200 6.03 1.151 ;C2

i1 2.000 1.000 8.02 68.800 88.200 0.000 34.000 56.000 0.000 ;D4

i2 4.000 0.125 9.00 77.990 83.490 107.600 112.450 0.000 0.000 0.000 ;C5

i2 4.125 0.125 9.02 83.490 88.989 77.466 80.807 0.000 0.000 0.000 ;D5

i2 4.250 0.125 9.04 88.989 94.488 117.300 122.150 0.000 0.000 0.000 ;E5

s

Incidentally, this example shows that BP2 does not necessarily produce a Csound score sorted on the on-setting dates of events. This is not a limitation since Csound sorts out dates after reading the score. BP2 does the same before compiling the Csound scores of its own sound-object prototypes.