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40 lines
798 B
C++
40 lines
798 B
C++
/*******************************************/
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/* 1st order allpass filter. */
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/* by Perry R. Cook, 1995-96 */
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/* A special case of the one pole */
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/* one zero filter. */
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/*******************************************/
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#include "AllPass1.h"
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AllPass1 :: AllPass1()
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{
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inputs = (MY_FLOAT *) malloc(MY_FLOAT_SIZE);
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outputs = (MY_FLOAT *) malloc(MY_FLOAT_SIZE);
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this->clear();
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}
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AllPass1 :: ~AllPass1()
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{
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free(inputs);
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free(outputs);
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}
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void AllPass1 :: clear()
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{
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outputs[0] = 0.0;
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inputs[0] = 0.0;
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lastOutput = 0.0;
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}
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MY_FLOAT AllPass1 :: tick(MY_FLOAT sample)
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{
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outputs[0] = sample - inputs[0] + (0.99 * outputs[0]);
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inputs[0] = sample;
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lastOutput = outputs[0];
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return lastOutput;
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}
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