e85d191b46
- merge v0.01 --> Añadido fileselector - Añadidas fuentes de Gem y Pure Data - pix2jpg incluído en Gem. Archivos de construcción de Gem modificados. - Añadido fichero ompiling.txt con instrucciones de compilación
168 lines
9.8 KiB
Text
168 lines
9.8 KiB
Text
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#X coords 0 1 882 -1 200 140 1;
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#X restore 369 323 graph;
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#X text 393 465 --- 0.02 sec ---;
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#X text 24 31 Many synthesis algorithms and transformations can have
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outputs with a zero-freqency component (commonly called DC for "direct
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current"). These are inaudible and sometimes cause distortion in audio
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output devices \, or when converting to fixed-point soundfile formats.
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It is often desirable to filter an audio signal to remove its DC component.
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;
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#X text 23 147 The simplest way to do this is to use a one-pole low-pass
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filter \, tuned to a low frequency such as 3 Hertz \, and to subtract
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its output from the original. This difference is called a one-pole
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\, one-zero high-pass filter \, and it is used so often that Pd provides
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one in the "hip~" object.;
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#X obj 26 270 +~ 1;
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#X obj 25 407 hip~ 5;
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#X text 88 407 high-pass filter;
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#X floatatom 74 366 5 0 0 0 - - -;
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#X msg 74 296 0;
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#X text 110 245 sinusoidal test signal;
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#X text 71 270 add "DC";
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#X text 112 296 zero for no filtering;
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#X msg 74 319 3;
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#X text 109 320 3 (or so) to remove DC;
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#X text 114 343 higher freqencies affect;
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#X text 154 359 the audible part of;
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#X text 154 375 the signal as well.;
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#X obj 26 245 osc~ 220;
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#X msg 74 342 220;
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#X text 131 4 ONE-POLE \, ONE-ZERO HIGH-PASS FILTER;
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