On 20/03/15 17:34, Gilberto Agostinho wrote:
Hi Claude,
On 20/03/15 18:24, [email protected] wrote:
you can hear aliasing quite easily - you turn up the pitch dial on your
oscillator and hear some other frequencies sweep downwards (and out of
tune)
Could you explain this better? If I create a glissando effect using
[line~] and [osc~], I don't hear any of the aliasing you mention, only
the expected result of a pitch going up. In which situations would these
aliasing effects appear?
you don't hear it with a single sine osc~ until very high frequencies
(half the sample rate at best) as it doesn't have many partials
the higher frequency partials in the table in the attached patch fold
over even when the oscillator fundamental is fairly low
Claude
#N canvas 1 51 450 300 10;
#X obj 31 32 table \$0-osc 1027;
#X obj 31 54 loadbang;
#X obj 31 111 s \$0-osc;
#X obj 31 197 tabosc4~ \$0-osc;
#X obj 31 219 *~ 0.25;
#X obj 31 241 dac~;
#X msg 214 30 \; pd dsp 1;
#X obj 31 176 +~ 2000;
#X obj 31 133 osc~ 0.01;
#X msg 31 76 cosinesum 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 1 1 1 -1 0
0 0 1 1 1 1 1 1 1 \, normalize 1;
#X obj 31 155 *~ 20;
#X connect 1 0 9 0;
#X connect 3 0 4 0;
#X connect 4 0 5 0;
#X connect 4 0 5 1;
#X connect 7 0 3 0;
#X connect 8 0 10 0;
#X connect 9 0 2 0;
#X connect 10 0 7 0;
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