diff --git a/radio/tests/interpolation/farrow/test.cpp b/radio/tests/interpolation/farrow/test.cpp
index eea1ea0..c5748d2 100644
--- a/radio/tests/interpolation/farrow/test.cpp
+++ b/radio/tests/interpolation/farrow/test.cpp
@@ -78,8 +78,8 @@ void wavSave(const char *pName, WAVEHEADER const &format, CVec &iq)
 
 }
 
-const radio_float_t		STR_GAIN_LEAD_AQU	= (radio_float_t)4.00E-4;		// 2E-3
-const radio_float_t		STR_GAIN_LAG_AQU	= (radio_float_t)0.50E-6;		// 5E-7
+const radio_float_t		STR_GAIN_LEAD_AQU	= (radio_float_t)1.00E-2;		// 2E-3
+const radio_float_t		STR_GAIN_LAG_AQU	= (radio_float_t)1.00E-7;		// 5E-7
 const radio_float_t		STR_GAIN_LEAD_TRK	= (radio_float_t)4.00E-6;		// 8E-4
 const radio_float_t		STR_GAIN_LAG_TRK	= (radio_float_t)1.00E-9;		// 1E-6
 
@@ -100,6 +100,10 @@ class TimingGeneratorGardner : public Interpolation::TimingGenerator
 		LeadLagSetCoeff(&str_loopfilter_coeff, STR_GAIN_LEAD_AQU, STR_GAIN_LAG_AQU);
 	}
 
+	void setOmega(radio_float_t omega)
+	{
+		LeadLagInit(&loop_filter_str, omega);
+	}
 	virtual ~TimingGeneratorGardner() = default;
 
 	void process(ComplexScalar const &iq)
@@ -110,10 +114,9 @@ class TimingGeneratorGardner : public Interpolation::TimingGenerator
 		// Symbol timing recovery
 		vd = STRGardnerProcess(&m_SymbolTimingRevovery, toCpx(iq));
 		vc = LeadLagProcess(&loop_filter_str, &str_loopfilter_coeff, vd);
-		cout << "Vd = " << vd << ", Vc = " << vc << endl;
+		cout << "Vd = " << vd << ", Vc = " << vc << ", mu = " << m_mu << endl;
 
-		setOmega(vc);
-		update();
+		update(vc);
 	}
 };
 
@@ -130,8 +133,9 @@ void test()
 
 	// Setup IQ data
 	WAVEHEADER header;
-	CVec iq_in = wavLoad("m2_12k_12k_i_q_short.wav", header);
-//	CVec iq_in = wavLoad("sine_220.wav", header);
+//	CVec iq_in = wavLoad("m2_12k_12k_i_q_short.wav", header);
+//	CVec iq_in = wavLoad("sine_12k_ef_1_percent.wav", header);
+	CVec iq_in = wavLoad("sine_12k.wav", header);
 	CVec iq_out;
 	iq_out.reserve(8*iq_in.size());