diff --git a/plugins/mimid/Engine/Filter.h b/plugins/mimid/Engine/Filter.h
index b91bafc..482ad6f 100644
--- a/plugins/mimid/Engine/Filter.h
+++ b/plugins/mimid/Engine/Filter.h
@@ -58,9 +58,10 @@ class Filter
 	}
 	void setResponse(float m)
 	{
+		// m = 0..3 (4 pole down to 1 pole)
 		mm = m;
-		mmch = (int)(mm * 3);
-		mmt = mm*3-mmch;
+		mmch = (int)mm;
+		mmt = mm - mmch;
 	}
 	inline void setSampleRate(float sr)
 	{
diff --git a/plugins/mimid/Engine/ParamDefs.h b/plugins/mimid/Engine/ParamDefs.h
index df8daba..c58cc0a 100644
--- a/plugins/mimid/Engine/ParamDefs.h
+++ b/plugins/mimid/Engine/ParamDefs.h
@@ -174,7 +174,7 @@
 	PARAM(ENVELOPE_AMT, PG_FILTER, SP_NONE, "EnvAmount", "filterenvamount", 0.0, 1.0, 0.0, processFilterEnvelopeAmt)
 
 	// Filter configuration
-	PARAM(RESPONSE, PG_FILTERCFG, SP_NONE, "Response", "response", 0.0, 1.0, 0.0, processResponse)
+	PARAM(RESPONSE, PG_FILTERCFG, SP_NONE, "Pole Count", "response", 1.0, 4.0, 4.0, processResponse)
 	PARAM(FENV_INVERT, PG_FILTERCFG, SP_ONOFF, "Env Invert", "fenvinvert", 0.0, SP_MAX, 0.0, processInvertFenv)
 	PARAM(FENV_LINEAR, PG_FILTERCFG, SP_ONOFF, "Linear Env", "fenvlinear", 0.0, SP_MAX, 0.0, procFenvLinear)
 
diff --git a/plugins/mimid/Engine/SynthEngine.h b/plugins/mimid/Engine/SynthEngine.h
index 0f8f56c..8b05201 100644
--- a/plugins/mimid/Engine/SynthEngine.h
+++ b/plugins/mimid/Engine/SynthEngine.h
@@ -522,7 +522,8 @@ class SynthEngine
 	}
 	void processResponse(float param)
 	{
-		ForEachVoice(flt.setResponse(linsc(param,0,1)));
+		// Pole count 1 .. 4 (continuous)
+		ForEachVoice(flt.setResponse(4 - param));
 	}
 	void processOversampling(float param)
 	{