Azimuth – page 7

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Step 1:

In Step 1 the idea was to generate 64 samples of 10 – 15 seconds in length. It must first be stated that a single Csound orchestra was utilized to render all the samples in this step. Figure 6 is an excerpt of the code:

instr 1

idur = p3

iamp = p4

ifreq = p5

kbal = p6

iatk = p3 * .1

idec = p3 * .2

kenv1 linseg 0, iatk,
iamp, idur – (iatk + idec), iamp, idec, 0

a1, a2 diskin 1, ifreq, 0, 1

outs (a1 * (kbal – 1)) * kenv1, (a2 * kbal) * kenv1

endin

Figure 6: Code excerpt from Step 1 orchestra

As can be seen this is a simple instrument. It is a stereo sample playback unit allowing for variable amplitude, frequency and static panning on a per event basis in the score. Also there is a duration dependent amplitude envelope meant to smooth any inconsistencies in the samples being used. Four of these instruments were used, all of them identical except for the sample number.

Mix 0 was begun by writing a Cmask sub-score meant to generate a Csound score that utilized sample 0111, the base sample from Group 1, to render 4 new samples. Figure 7 is an excerpt of the Cmask code (sub-score) used to generate the first score:

f 0 30 ;Field start time and duration

p1 const ;instrument number constant

p2 ;start time
rnd uni ;random uniform distribution
mask (0 0 10 5) (0 8 10 10) ;Time Value Time Value …
prec 0 ; no decimal places

p3 ;idur
rnd exp 1 ;random exponential distribution
mask (0 11 10 20) (0 20 10 30) ;Time Value Time Value …
prec 2 ; two decimal places

p4 ; iamp ( Range 0 – 1)
rnd uni ;random uniform distribution
mask .30 .76 ;range .30 – .76
prec 2 ; two decimal places


p5 ;ifreq (Range -10 – 10)
rnd uni ;random uniform distribution
mask -4.15 4.16 ;range -4.15 – 4.16
prec 2 ;two decimal places


p6 ;kbal (Range 0 – 1)
range 0 1 ;uniform distribution between values 0 1
prec 2 ;two decimal places

Figure 7: Excerpt from Cmask sub-score for Step 1

In Figure 8, the row marked “sample” were the names of the original sample(s) and in the row marked “result” were the names of the samples created. Notice the general density designation for each row. The use of colors was implemented to make it easier to spot the origins of the results and later the origins of the reiteration process.

*The sample numbers in the gray cells are links to an mp3 of the sample.


Step 1 – Create 10 – 15 second samples (64 samples created)


Mix 0 –
Developing base samples





Group 1


Group 2


Group 3


Group 4


Density = Start time vs. duration

Samples


0111


0121     


0131


0141

Results
1011

1021

1031

1041


1012


1022


1032


1042


Medium Low Density


1013


1023


1033


1043


Medium High Density


1014


1024


1034


1044


High Density


Mix 1-
Mixing samples within each group




Group 1


Group 2


Group 3


Group 4

Samples


0111


0121


0131


0141


0112


0122


0132


0142


0113


0123


0133


0143


0114


0124


0134


0144

Results



1111


1121


1131


1141
Low Density

1112

1122

1132

1142
Medium Low Density


1113


1123


1133


1143


Medium High Density


1114


1124


1134


1144


High Density


Mix 2 –
Mixing samples between groups




Group 1


Group 2


Group 3


Group 4

Samples


0111


0121


0131


0141


0112


0122


0132


0142


0113


0123


0133


0143


0114


0124


0134


0144

Results



1211     



1221     



1231     



1241     


Low Density


1212


1222


1232


1242


Medium Low Density


1213


1223


1233


1243


Medium High Density


1214


1224


1234


1244


High Density


Mix 3 –
Morphing between groups




Group 1


Group 2


Group 3


Group 4

Samples

0111 to 0121, 0131 or
0141

0121 to 0111, 0131 or
0141

0131 to 0111, 0121 or
0141

0141 to 0111, 0121 or
0131


Chose any one sample per event.

0112 to 0122, 0132 or
0142

0122 to 0112, 0132 or
0142

0132 to 0112, 0122 or
0142

0142 to 0112, 0122 or
0132


Chose any one sample per event.
0113 to 0123,
0133 or 0143
0123 to 0113,
0133 or 0143
0133 to 0113,
0123 or 0143
0143 to 0113,
0123 or 0133

Chose any one sample per event.

0114 to 0124,
0134 or 0144
0124 to 0114,
0134 or 0144
0134 to 0114,
0124 or 0144
0144 to 0114,
0124 or 0134

Chose
any one sample per event.

Results



1311



1321



1331



1341


Low Density


1312


1322


1332


1342


Medium Low Density


1313


1323


1333


1343


Medium High Density


1314


1324


1334


1344


High Density

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