--- a/src/in_ncsf/SSEQPlayer/Channel.cpp
+++ b/src/in_ncsf/SSEQPlayer/Channel.cpp
@@ -64,7 +64,7 @@
 		double dx = static_cast<double>(SINC_WIDTH) / SINC_SAMPLES, x = 0.0;
 		for (unsigned i = 0; i <= SINC_SAMPLES; ++i, x += dx)
 		{
-			float y = x / SINC_WIDTH;
+			double y = x / SINC_WIDTH;
 			this->sinc_lut[i] = std::abs(x) < SINC_WIDTH ? sinc(x) * (0.40897 + 0.5 * std::cos(M_PI * y) + 0.09103 * std::cos(2 * M_PI * y)) : 0.0;
 		}
 		this->initializedLUTs = true;

--- a/src/in_ncsf/SSEQPlayer/Channel.h
+++ b/src/in_ncsf/SSEQPlayer/Channel.h
@@ -210,7 +210,7 @@
 	NDSSoundRegister reg;
 
 	/*
-	 * Lookup tables for the cosine and Lanczos Sinc interpolations, to
+	 * Lookup tables for the Sinc interpolation, to
 	 * avoid the need to call the sin/cos functions all the time.
 	 * These are static as they will not change between channels or runs
 	 * of the program.