statistics.cpp File Reference

#include <cstdio>
#include <assert.h>
#include <qstring.h>
#include <stdio.h>
#include <qpixmap.h>
#include <qpainter.h>
#include <qtextedit.h>
#include <qlabel.h>
#include "bpmdj.h"
#include "song.h"
#include "histogram-type.h"
#include "echo-property.h"
#include "selector.h"
#include "spectrum-type.h"
#include "signals.h"
#include "files.h"
#include "statistics.h"
#include "memory.h"
#include "pca.h"
#include "vector-iterator.h"
#include "database.h"

Include dependency graph for statistics.cpp:

Functions
void	mean_spectrum (spectrum_type *spectrum)
void	dev_spectrum (spectrum_type *spectrum)
void	stop_mean_spectrum ()
void	stop_dev_spectrum ()
float4	normalize_freq (float4 in, int band)
void	mean_echo_old (echo_property echo)
void	stop_mean_echo_old ()
void	dev_echo (echo_property echo)
void	stop_dev_echo ()
float4	normalize_echo_old (float4 val, int band, int delay)
void	statistics_first_pass (Song *song)
void	statistics_prepare_second_pass ()
void	statistics_second_pass (Song *song)
void	statistics_stop_second_pass ()
float4	stats_get_freq (int band)
float4	stats_get_band_freq (int band)
float4	stats_get_freq_dev (int band)
float4	stats_get_echo_old (int band, int delay)
int	bit_rev (int in, int check)
Variables
spectrum_freq	devs [spectrum_size]
spectrum_freq	means [spectrum_size]
float8 **	echo_mean = NULL
float8 **	echo_dev = NULL

---

Function Documentation

int bit_rev	(	int	in,
		int	check
	)

void dev_echo

(

echo_property

echo

)

References echo_dev, echo_mean, histogram_property< bandsize >::empty(), histogram_property< bandsize >::get_count(), histogram_property< bandsize >::get_freq_energy_probability(), i, and spectrum_size.

void dev_spectrum

(

spectrum_type *

spectrum

)

References spectrum_type::band(), devs, i, means, no_spectrum, and spectrum_size.

Referenced by statistics_second_pass().

void mean_echo_old

(

echo_property

echo

)

References bpmdj_allocate, echo_dev, echo_mean, echo_prop_sx, histogram_property< bandsize >::empty(), histogram_property< bandsize >::get_count(), histogram_property< bandsize >::get_freq_energy_probability(), i, and spectrum_size.

void mean_spectrum

(

spectrum_type *

spectrum

)

In comparison to pre2.7 versions, the spectrum scale is now calculated differently first we take the mean value. Based on this we also take the mean variation rescaling happened by subtracting the mean and then dividing by the standard deviation

References spectrum_type::band(), i, means, no_spectrum, and spectrum_size.

Referenced by statistics_first_pass().

float4 normalize_echo_old	(	float4	val,
		int	band,
		int	delay
	)

References echo_dev, and echo_mean.

float4 normalize_freq	(	float4	in,
		int	band
	)

References devs, and means.

Referenced by SongMetriek::spectrum_dist().

void statistics_first_pass

(

Song *

song

)

References mean_spectrum().

void statistics_prepare_second_pass

(

)

References stop_mean_spectrum().

void statistics_second_pass

(

Song *

song

)

References dev_spectrum().

void statistics_stop_second_pass

(

)

References stop_dev_spectrum().

float4 stats_get_band_freq

(

int

band

)

References barkbounds.

float4 stats_get_echo_old	(	int	band,
		int	delay
	)

References echo_mean.

float4 stats_get_freq

(

int

band

)

References assert(), and means.

float4 stats_get_freq_dev

(

int

band

)

References devs.

void stop_dev_echo

(

)

References echo_dev, echo_prop_sx, i, and spectrum_size.

void stop_dev_spectrum

(

)

References devs, i, and spectrum_size.

Referenced by statistics_stop_second_pass().

void stop_mean_echo_old

(

)

References echo_mean, echo_prop_sx, i, and spectrum_size.

void stop_mean_spectrum

(

)

References i, means, and spectrum_size.

Referenced by statistics_prepare_second_pass().

---

Variable Documentation

spectrum_freq devs[spectrum_size]

Initial value:

 
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}

Referenced by dev_spectrum(), normalize_freq(), stats_get_freq_dev(), and stop_dev_spectrum().

float8** echo_dev = NULL

Referenced by dev_echo(), mean_echo_old(), normalize_echo_old(), and stop_dev_echo().

float8** echo_mean = NULL

Referenced by dev_echo(), mean_echo_old(), normalize_echo_old(), stats_get_echo_old(), and stop_mean_echo_old().

spectrum_freq means[spectrum_size]

Initial value:

 
  {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}

Referenced by dev_spectrum(), mean_spectrum(), normalize_freq(), stats_get_freq(), and stop_mean_spectrum().