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Reverted Sinc interpolation back to the Lanczos window.
Naram Qashat authored on 2014/06/17 10:40:29
Showing 3 changed files
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@@ -41,6 +41,7 @@ v1.7.1 - 2013-04-26 - Minor update to scale the phase offset, thanks to kode54. |
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for the original implementation). |
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- Corrected clamping issue which caused some clipping-like |
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effects. |
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+v1.8.1 - 2014-06-17 - Reverted Sinc interpolation back to the Lanczos window. |
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This is a Winamp plugin to play NCSF files. NCSF is a PSF-style music format that |
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uses SDAT files from Nintendo DS ROMs as it's "program". |
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@@ -1,7 +1,7 @@ |
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/* |
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* SSEQ Player - Channel structures |
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* By Naram Qashat (CyberBotX) [cyberbotx@cyberbotx.com] |
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- * Last modification on 2013-05-07 |
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+ * Last modification on 2014-06-17 |
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* |
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* Adapted from source code of FeOS Sound System |
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* By fincs |
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@@ -66,7 +66,7 @@ Channel::Channel() : chnId(-1), tempReg(), state(CS_NONE), trackId(-1), prio(0), |
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this->cosine_lut[i] = (1.0 - std::cos((static_cast<double>(i) / COSINE_RESOLUTION) * M_PI)) * 0.5; |
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double dx = static_cast<double>(SINC_WIDTH) / SINC_SAMPLES, x = 0.0; |
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for (unsigned i = 0; i <= SINC_SAMPLES; ++i, x += dx) |
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- this->sinc_lut[i] = std::abs(x) < SINC_WIDTH ? sinc(x) * (0.5 * (1.0 + std::cos((M_PI * x) / SINC_WIDTH))) : 0.0; |
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+ this->sinc_lut[i] = std::abs(x) < SINC_WIDTH ? sinc(x) * sinc(x / SINC_WIDTH) : 0.0; |
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this->initializedLUTs = true; |
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} |
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} |
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@@ -1,7 +1,7 @@ |
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/* |
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* xSF - NCSF configuration |
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* By Naram Qashat (CyberBotX) [cyberbotx@cyberbotx.com] |
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- * Last modification on 2013-05-07 |
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+ * Last modification on 2014-06-17 |
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* |
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* Partially based on the vio*sf framework |
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*/ |
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@@ -42,7 +42,7 @@ public: |
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unsigned XSFConfig::initSampleRate = 44100; |
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std::wstring XSFConfig::commonName = L"NCSF Decoder"; |
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-std::wstring XSFConfig::versionNumber = L"1.8"; |
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+std::wstring XSFConfig::versionNumber = L"1.8.1"; |
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unsigned XSFConfig_NCSF::initInterpolation = 5; |
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std::wstring XSFConfig_NCSF::initMutes = L"0000000000000000"; |
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@@ -101,7 +101,7 @@ INT_PTR CALLBACK XSFConfig_NCSF::ConfigDialogProc(HWND hwndDlg, UINT uMsg, WPARA |
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SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"4-point, 3rd-order B-spline")); |
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SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"6-point, 5th-order Osculating")); |
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SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"6-point, 5th-order B-spline")); |
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- SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"Sinc (Hann Window)")); |
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+ SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_ADDSTRING, 0, reinterpret_cast<LPARAM>(L"Sinc (Lanczos Window)")); |
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SendMessageW(GetDlgItem(hwndDlg, idInterpolation), CB_SETCURSEL, this->interpolation, 0); |
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// Mutes |
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for (int x = 0, numMutes = this->mutes.size(); x < numMutes; ++x) |