BpmCounter Class Reference

#include <bpm.h>

Collaboration diagram for BpmCounter:

[legend]

List of all members.

Public Member Functions
	BpmCounter (FILE *l, stereo_sample2 *block, unsigned4 sample_length, int wavrate, float8 lower_boundary, float8 higher_boundary)
	~BpmCounter ()
void	init (unsigned4 sample_length, stereo_sample2 *block, int wavrate, float8 lower_boundary, float8 higher_boundary)
float8	measure ()

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Detailed Description

------------------------------------------- Imports ------------------------------------------- ------------------------------------------- Imports -------------------------------------------

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Constructor & Destructor Documentation

BpmCounter::BpmCounter	(	FILE *	l,
		stereo_sample2 *	block,
		unsigned4	sample_length,
		int	wavrate,
		float8	lower_boundary,
		float8	higher_boundary
	)			[inline]

References init().

BpmCounter::~BpmCounter

(

)

References bpmdj_deallocate.

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Member Function Documentation

void BpmCounter::init	(	unsigned4	sample_length,
		stereo_sample2 *	block,
		int	wavrate,
		float8	lower_boundary,
		float8	higher_boundary
	)

We calculate the length of an analysis block. We aim to include all frequencies starting from at least 50 Hz. If we start at 44100 Hz we must halve the value 11 times. Which means that we must have at least a buffer of 1<<11

Preparation of the Fourier windows, for every band we will have a separate plan available. All output is stored in the energy array, which is then used to compute the autocorrelation sequence

References bpmdj_allocate, fclose(), and FILE.

Referenced by BpmCounter().

float8 BpmCounter::measure

(

)

References assert(), bpmdj_allocate, bpmdj_deallocate, differentiate(), energize(), i, and normalize_abs_max().

Referenced by main().

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The documentation for this class was generated from the following files:

• bpm.h
• bpm.cpp