bpm-analyzer.cpp File Reference

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#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 <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)
void	spectrum_to_bark (fftw_complex in, int window_size, double out)
void	read_audio (FILE f, unsigned8 offset, double target, unsigned4 length)
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().

Function Documentation

fft_type index2autocortempo ( signed4 i )

References assert(), diskrate, and spectrum_shifter.

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 diskrate.