Module:MOS: Difference between revisions

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@@ Line 230: / Line 230: @@
 	return result
 end
+--------------------------------------------------------------------------------
+------------------ INTERVAL FUNCTIONS FOR SIMPLE INTERVALS ---------------------
+--------------------------------------------------------------------------------
 -- Compute the unison as a vector of L's and s's.
@@ Line 241: / Line 245: @@
 	}
 	return result
+end
+-- Compute the vector for a single large step.
+function p.large_step()
+	local result = {
+		['L'] = 1,
+		['s'] = 0
+	}
+	return result
+end
+-- Compute the vector for a single small step.
+function p.large_step()
+	local result = {
+		['L'] = 0,
+		['s'] = 1
+	}
+	return result
+end
+-- Compute the vector for a single chroma. It's a large step minus a small step.
+function p.chroma()
+	local result = {
+		['L'] = 1,
+		['s'] = -1
+	}
+	return result
+end
+-- Compute the vector for an augmented step. It's a large step plus a chroma.
+function p.augmented_step()
+	return p.interval_add(p.large_step(), p.chroma())
+end
+-- Compute the vector for a diminished step. It's a small stuep minus a chroma.
+function p.diminished_step()
+	return p.interval_sub(p.small_step(), p.chroma())
 end