diff --git a/examples/audio.cpp b/examples/audio.cpp
index 7d5b144e..04eda68f 100644
--- a/examples/audio.cpp
+++ b/examples/audio.cpp
@@ -68,7 +68,7 @@ struct audio_app
 	{
 		mixer_ = audio::make_mixer();
 		volume_control_ = audio::volume_stereo(mixer_, 0.5f, 0.5f, 0.1f);
-		engine_.output()->stream(audio::compressor(volume_control_, audio::from_db(-2.f), 0.95f, 0.002f, 1.f));
+		engine_.output()->stream(audio::compressor(volume_control_, audio::from_db(-2.f), 0.95f, 0.002f, 1.f, audio::from_db(1.f)));
 	}
 
 	void on_key_down(SDL_Keycode key) override
diff --git a/libs/audio/include/psemek/audio/effect/compressor.hpp b/libs/audio/include/psemek/audio/effect/compressor.hpp
index 032e231c..caf4a53a 100644
--- a/libs/audio/include/psemek/audio/effect/compressor.hpp
+++ b/libs/audio/include/psemek/audio/effect/compressor.hpp
@@ -6,8 +6,9 @@
 namespace psemek::audio
 {
 
-	stream_ptr compressor(stream_ptr stream, float volume_threshold = from_db(-1.f), float strength = 0.9f, float envelope_attack = 0.01f, float envelope_release = 1.f);
+	stream_ptr compressor(stream_ptr stream, float volume_threshold = from_db(-2.f), float strength = 0.9f, float envelope_attack = 0.01f, float envelope_release = 1.f,
+		float knee = from_db(1.f));
 
-	stream_ptr limiter(stream_ptr stream, float volume_threshold = from_db(0.f), float envelope_attack = 0.01f, float envelope_release = 1.f);
+	stream_ptr limiter(stream_ptr stream, float volume_threshold = from_db(0.f), float envelope_attack = 0.01f, float envelope_release = 1.f, float knee = 0.f);
 
 }
diff --git a/libs/audio/source/effect/compressor.cpp b/libs/audio/source/effect/compressor.cpp
index 6db52e8f..5d3552bc 100644
--- a/libs/audio/source/effect/compressor.cpp
+++ b/libs/audio/source/effect/compressor.cpp
@@ -1,6 +1,8 @@
 #include <psemek/audio/effect/compressor.hpp>
 #include <psemek/audio/smooth.hpp>
 #include <psemek/geom/math.hpp>
+#include <psemek/geom/interval.hpp>
+#include <psemek/geom/contains.hpp>
 
 namespace psemek::audio
 {
@@ -11,12 +13,13 @@ namespace psemek::audio
 		struct compressor_impl
 			: stream
 		{
-			compressor_impl(stream_ptr stream, float volume_threshold, float strength, float envelope_attack, float envelope_release)
+			compressor_impl(stream_ptr stream, float volume_threshold, float strength, float envelope_attack, float envelope_release, float knee)
 				: stream_(std::move(stream))
 				, volume_threshold_log_(std::log(volume_threshold))
 				, strength_(strength)
 				, envelope_attack_multiplier_(smoothness_to_multiplier(envelope_attack))
 				, envelope_release_multiplier_(smoothness_to_multiplier(envelope_release))
+				, knee_range_(geom::expand(geom::interval<float>::singleton(volume_threshold_log_), std::log(knee) * 0.5f))
 			{}
 
 			std::optional<std::size_t> length() const override
@@ -38,7 +41,12 @@ namespace psemek::audio
 
 					float strength = strength_;
 
-					float log_gain = strength * std::min(0.f, volume_threshold_log_ - std::log(envelope_));
+					float envelope_log = std::log(envelope_);
+
+					if (geom::contains(knee_range_, envelope_log))
+						strength *= geom::unlerp(knee_range_, envelope_log);
+
+					float log_gain = strength * std::min(0.f, volume_threshold_log_ - envelope_log);
 
 					float gain = std::exp(log_gain);
 
@@ -60,19 +68,20 @@ namespace psemek::audio
 			float strength_;
 			float envelope_attack_multiplier_;
 			float envelope_release_multiplier_;
+			geom::interval<float> knee_range_;
 			float envelope_ = 0.f;
 		};
 
 	}
 
-	stream_ptr compressor(stream_ptr stream, float volume_threshold, float strength, float envelope_attack, float envelope_release)
+	stream_ptr compressor(stream_ptr stream, float volume_threshold, float strength, float envelope_attack, float envelope_release, float knee)
 	{
-		return std::make_shared<compressor_impl>(std::move(stream), volume_threshold, strength, envelope_attack, envelope_release);
+		return std::make_shared<compressor_impl>(std::move(stream), volume_threshold, strength, envelope_attack, envelope_release, knee);
 	}
 
-	stream_ptr limiter(stream_ptr stream, float volume_threshold, float envelope_attack, float envelope_release)
+	stream_ptr limiter(stream_ptr stream, float volume_threshold, float envelope_attack, float envelope_release, float knee)
 	{
-		return compressor(std::move(stream), volume_threshold, 1.f, envelope_attack, envelope_release);
+		return compressor(std::move(stream), volume_threshold, 1.f, envelope_attack, envelope_release, knee);
 	}
 
 }