@@ -63,7 +63,10 @@ Channel::Channel() : chnId(-1), tempReg(), state(CS_NONE), trackId(-1), prio(0),

 	{

 		double dx = static_cast<double>(SINC_WIDTH) / SINC_SAMPLES, x = 0.0;

 		for (unsigned i = 0; i <= SINC_SAMPLES; ++i, x += dx)

-			this->sinc_lut[i] = std::abs(x) < SINC_WIDTH ? sinc(x) * sinc(x / SINC_WIDTH) : 0.0;

+		{

+			float 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;

 	}

 }

@@ -81,7 +81,7 @@ INT_PTR CALLBACK XSFConfig_NCSF::ConfigDialogProc(HWND hwndDlg, UINT uMsg, WPARA

 			SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"Linear"));

 			SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"4-point, 3rd-order Legrange"));

 			SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"6-point, 5th-order Legrange"));

-			SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"16-point Sinc (Lanczos Window)"));

+			SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"16-point Sinc (Nuttall 3-term Window)"));

 			SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_SETCURSEL, this->interpolation, 0);

 			// Mutes

 			for (int x = 0, numMutes = this->mutes.size(); x < numMutes; ++x)