bpm-analyzer.cpp File Reference

#include <qapplication.h>
#include <qradiobutton.h>
#include <qlineedit.h>
#include <qpixmap.h>
#include <qpainter.h>
#include <qpushbutton.h>
#include <qlcdnumber.h>
#include <qcheckbox.h>
#include <qlabel.h>
#include <qprogressbar.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <libgen.h>
#include <fcntl.h>
#include <signal.h>
#include <sys/ioctl.h>
#include <qspinbox.h>
#include <unistd.h>
#include <time.h>
#include <sys/times.h>
#include <math.h>
#include <assert.h>
#include <sys/mman.h>
#include <syscall.h>
#include <fftw3.h>
#include "bpm-analyzer.h"
#include "version.h"
#include "player-core.h"
#include "scripts.h"
#include "bpm.h"
#include "memory.h"
#include "clock-drivers.h"

Include dependency graph for bpm-analyzer.cpp:

Defines
#define	IMAGE_XS   320
#define	IMAGE_YS   240
#define	FIT_CURVES
#define	FFT_MIN_SINK
Functions
void	map_output (float4 *target, int startfreq, int count, double *hcfreq, int winsize)
fft_type	index2autocortempo (signed4 i)
Variables
const signed4	shifter = 12
const signed4	spectrum_shifter = 2

---

Define Documentation

#define FFT_MIN_SINK

The expected outcome modifies the output such that it will provide an estimate base don what was already seen. Comparing the measurement against what we expect it to be mioght hint which tempos are interesting. FFT MIN_SINK will look atht the melody spectrum and lower each value based on the last minimum value. RS_MAX_RAISE Perofrms the same stuff but will instead raise the last element to its last known position.

#define FIT_CURVES

The smootmelody define will look at the melodyline and 'fix'it. Didn't work too well. FIT_CURVES will set the analyzer such that it uses a log function to normalize the resulting mismatchgraph This feature improves the output of the algortihm from 30% to 40% successrate on a particular dataset.

#define IMAGE_XS   320

Referenced by BpmAnalyzerDialog::analyze().

#define IMAGE_YS   240

Referenced by BpmAnalyzerDialog::analyze().

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Function Documentation

fft_type index2autocortempo

(

signed4

i

)

References assert(), spectrum_shifter, and WAVRATE.

void map_output	(	float4 *	target,
		int	startfreq,
		int	count,
		double *	hcfreq,
		int	winsize
	)

To deal with multiple levels of rayshooting we can define the following To help me overload gnuplot, I export all note and frequency data into a nice large file

References assert(), and WAVRATE.

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Variable Documentation

const signed4 shifter = 12

const signed4 spectrum_shifter = 2

Referenced by index2autocortempo().