diff --git a/libs/audio/include/psemek/audio/oscillator.hpp b/libs/audio/include/psemek/audio/oscillator.hpp
index 236546ed..8fda760a 100644
--- a/libs/audio/include/psemek/audio/oscillator.hpp
+++ b/libs/audio/include/psemek/audio/oscillator.hpp
@@ -10,9 +10,15 @@ namespace psemek::audio
 
 	struct oscillator
 	{
-		oscillator(float frequency)
-			: m_(std::exp(std::complex<float>{0.f, 2.f * geom::pi * frequency * inv_frequency}))
-		{}
+		oscillator(float f)
+		{
+			frequency(f);
+		}
+
+		void frequency(float f)
+		{
+			m_ = std::exp(std::complex<float>{0.f, 2.f * geom::pi * f * inv_frequency});
+		}
 
 		std::complex<float> phase() const
 		{