diff --git a/radio/tests/interpolation/farrow/test.cpp b/radio/tests/interpolation/farrow/test.cpp
index 0d5a09d..a4c156b 100644
--- a/radio/tests/interpolation/farrow/test.cpp
+++ b/radio/tests/interpolation/farrow/test.cpp
@@ -91,9 +91,10 @@ void test()
 
 	// Setup IQ data
 	WAVEHEADER header;
-//	CVec iq_in = wavLoad("m2_12k_12k_i_q_short.wav", header);
-	CVec iq_in = wavLoad("sine.wav", header);
-	CVec iq_out(4*iq_in.size());
+	CVec iq_in = wavLoad("m2_12k_12k_i_q_short.wav", header);
+//	CVec iq_in = wavLoad("sine_220.wav", header);
+	CVec iq_out;
+	iq_out.reserve(8*iq_in.size());
 
 	// Loop-Filter
 	lead_lag_filter_t loop_filter_str;
@@ -123,10 +124,11 @@ void test()
 		n += numFed;
 		remain -= numFed;
 
-		farrow.process_new(0.9);
+		farrow.process_new(0.333);
 		while(farrow.getOutputBuffer().len())
 		{
 			size_t size = std::min(BLOCKSIZE, farrow.getOutputBuffer().len());
+			iq_out.resize(k+size);
 			for (size_t i=0; i < size; i++)
 			{
 				iq_out[k++] = farrow.getOutputBuffer().readAt(0);