freeswitch/src/mod/applications/mod_avmd/avmd_amplitude.c

#ifndef __AVMD_AMPLITUDE_H__


#include <math.h>
#include "avmd_amplitude.h"
#include "avmd_psi.h"


double avmd_amplitude(circ_buffer_t *b, size_t i, double f) {
    double result;
    result = sqrt(PSI(b, i) / sin(f * f));
    return result;
}


#endif /* __AVMD_AMPLITUDE_H__ */
FS-8875 Enable faster beep detection Unnecessary computation of arc cosine is omitted and convergence is checked on partial results. Original frequency is easily retrieved when needed. 2016-03-27 20:39:53 +01:00			`#ifndef __AVMD_AMPLITUDE_H__`


Added new FreeSWITCH module mod_avmd or the Advanced Voicemail Detection Module. 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? 2010-05-25 15:03:14 -04:00			`#include <math.h>`
FS-8988 Rename files 2016-03-29 20:53:31 +01:00			`#include "avmd_amplitude.h"`
			`#include "avmd_psi.h"`
Added new FreeSWITCH module mod_avmd or the Advanced Voicemail Detection Module. 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? 2010-05-25 15:03:14 -04:00
FS-9009 [mod_avmd] Amplitude estimation Add DESA-2 estimation of signal amplitude 2016-07-04 16:26:08 +01:00
			`double avmd_amplitude(circ_buffer_t *b, size_t i, double f) {`
Added new FreeSWITCH module mod_avmd or the Advanced Voicemail Detection Module. 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? 2010-05-25 15:03:14 -04:00			`double result;`
			`result = sqrt(PSI(b, i) / sin(f * f));`
			`return result;`
			`}`

FS-8875 Enable faster beep detection Unnecessary computation of arc cosine is omitted and convergence is checked on partial results. Original frequency is easily retrieved when needed. 2016-03-27 20:39:53 +01:00
			`#endif /* __AVMD_AMPLITUDE_H__ */`
Added new FreeSWITCH module mod_avmd or the Advanced Voicemail Detection Module. 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? 2010-05-25 15:03:14 -04:00