patest_maxsines.c File Reference

How many sine waves can we calculate and play in less than 80% CPU Load. More...

#include <stdio.h>
#include <math.h>
#include "portaudio.h"

Data Structures
struct	paTestData
Defines
#define	MAX_SINES   (500)
#define	MAX_USAGE   (0.8)
#define	SAMPLE_RATE   (44100)
#define	FREQ_TO_PHASE_INC(freq)   (freq/(float)SAMPLE_RATE)
#define	MIN_PHASE_INC   FREQ_TO_PHASE_INC(200.0f)
#define	MAX_PHASE_INC   (MIN_PHASE_INC * (1 << 5))
#define	FRAMES_PER_BUFFER   (512)
#define	M_PI   (3.14159265)
#define	TWOPI   (M_PI * 2.0)
#define	TABLE_SIZE   (512)
Functions
float	LookupSine (paTestData *data, float phase)
int	main (void)

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Detailed Description

How many sine waves can we calculate and play in less than 80% CPU Load.

Author:

Ross Bencina <rossb@audiomulch.com>

Phil Burk <philburk@softsynth.com>

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Define Documentation

#define FRAMES_PER_BUFFER   (512)

#define FREQ_TO_PHASE_INC

(

freq

)

(freq/(float)SAMPLE_RATE)

#define M_PI   (3.14159265)

#define MAX_PHASE_INC   (MIN_PHASE_INC * (1 << 5))

#define MAX_SINES   (500)

#define MAX_USAGE   (0.8)

#define MIN_PHASE_INC   FREQ_TO_PHASE_INC(200.0f)

#define SAMPLE_RATE   (44100)

#define TABLE_SIZE   (512)

#define TWOPI   (M_PI * 2.0)

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Function Documentation

float LookupSine	(	paTestData *	data,
		float	phase
	)

int main

(

void

)

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