// saw
(
{
	sum(
	{|i|
		var j = i + 1;
		SinOsc.ar(300 * j, 0, 1/j)
	
	} ! 20)

}.plot
)

// inverse saw
(
{
	sum(
	{|i|
		var j = i + 1 * 2;
		SinOsc.ar(300 * j, pi, 1/j)
	
	} ! 20)

}.plot
)


// pulse
(
{
	sum(
	{|i|
		var j = i * 2 + 1;
		
		SinOsc.ar(300 * j, 0, 1/j)
	
	} ! 20)

}.plot
)

// triangle
(
{
	sum(
	{|i|
		var j = i * 2 + 1;
		SinOsc.ar(300 * j, pi/2, 1 / j.squared) // cosine wave (phase shift)
	
	} ! 20)

}.plot
)