The input signal value is truncated to an integer value and used as an index into the table. Out-of-range index values are wrapped cyclically to the valid range.
bufnum |
Index of the buffer. |
in |
The input signal. |
mul |
Output will be multiplied by this value. |
add |
This value will be added to the output. |
// indexing into a table
(
{
var buf = LocalBuf.newFrom([ 200, 300, 400, 500, 600, 800 ]);
var freq = WrapIndex.kr(buf, MouseX.kr(0, BufFrames.ir(buf) * 3));
SinOsc.ar(freq) * 0.1
}.play;
)
// the same using a global buffer
(
t = [ 200, 300, 400, 500, 600, 800 ];
b = Buffer(s, t.size, 1);
// alloc and set the values
s.listSendMsg( b.allocMsg( b.setnMsg(0, t) ).postln );
SynthDef(\help_Index, { |out=0, bufnum=0|
Out.ar(out,
SinOsc.ar(
WrapIndex.kr(
bufnum,
MouseX.kr(0, BufFrames.ir(bufnum) * 3)
),
0,
0.5
)
)
}).play(s, [\bufnum, b.bufnum]);
)