Function main

examples/algorithmic/noteFuncs.cpp:14–110

using namespace gam;

int main(){

	/* 
	scl::freq returns a frequency, in Hz, from a note string consisting of a 
	pitch class letter followed by an (optional) accidental and lastly an 
	octave number where 4 is the middle octave.
	*/

	// Middle C
	printf("\"c 4\" = %g Hz\n", scl::freq("c 4"));
	printf("\"C4\"  = %g Hz\n", scl::freq("C4"));

	// Middle C sharp
	printf("\"c+4\" = %g Hz\n", scl::freq("c+4"));
	printf("\"C#4\" = %g Hz\n", scl::freq("C#4"));
	
	// Middle C flat
	printf("\"c-4\" = %g Hz\n", scl::freq("c-4"));
	printf("\"Cb4\" = %g Hz\n", scl::freq("Cb4"));
	
	// Low A
	printf("\"a3\"  = %g Hz\n", scl::freq("a3"));
	
	// The C major scale
	printf("\nFrequencies of the C-major scale (middle octave):\n");
	printf("%g, %g, %g, %g, %g, %g, %g, %g\n",
		scl::freq("c4"), scl::freq("d4"), scl::freq("e4"), scl::freq("f4"),
		scl::freq("g4"), scl::freq("a4"), scl::freq("b4"), scl::freq("c5")
	);
	
	
	/* 
	We can use scl::nearest to get the closest note number within a specified
	pitch class set. This is useful for mapping arbitrary values onto notes in a
	musical scale.
	The first argument is the note number to match, the second is a string
	containing the scale's half-step intervals, and the third argument specifies
	the modulus or divisions per octave (default is 12).
	*/
	
	// Major scale
	printf("%g\n", scl::nearest(4.1, "2212221"));
	
	// Minor scale
	printf("%g\n", scl::nearest(4.1, "2122212"));
	
	// Major pentatonic scale
	printf("%g\n", scl::nearest( 1.1, "22323"));
	printf("%g\n", scl::nearest( 4.1, "22323"));
	printf("%g\n", scl::nearest(10.7, "22323"));
	
	
	/*
	scl::ratioET computes frequency ratios within a specified 
	equal-temperament tuning system. The first argument is the note number, the
	second is the number of divisions per octave (default is 12) and the third
	is the base multiplier of the octave (default is 2).
	*/