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https://github.com/signalwire/freeswitch.git
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10c6a30a59
It provides better detection than mod_vmd but is a little more CPU intensive than mod_vmd. Perhaps someone would like to CUDAfy this code?
24 lines
433 B
C
24 lines
433 B
C
#ifndef __AMPLITUDE_H__
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#include <math.h>
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#include "amplitude.h"
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#include "psi.h"
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/*! \brief
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* @author Eric des Courtis
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* @param b A circular audio sample buffer
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* @param i Position in the buffer
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* @param f Frequency estimate
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* @return The amplitude at position i
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*/
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extern double amplitude(circ_buffer_t *b, size_t i, double f)
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{
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double result;
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result = sqrt(PSI(b, i) / sin(f * f));
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return result;
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}
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#endif
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