diff options
Diffstat (limited to 'libs/qm-dsp/base/Window.h')
-rw-r--r-- | libs/qm-dsp/base/Window.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/libs/qm-dsp/base/Window.h b/libs/qm-dsp/base/Window.h index 5d6168e7ee..686d023c6b 100644 --- a/libs/qm-dsp/base/Window.h +++ b/libs/qm-dsp/base/Window.h @@ -46,7 +46,7 @@ public: return *this; } virtual ~Window() { delete[] m_cache; } - + void cut(T *src) const { cut(src, src); } void cut(const T *src, T *dst) const { for (size_t i = 0; i < m_size; ++i) dst[i] = src[i] * m_cache[i]; @@ -59,7 +59,7 @@ protected: WindowType m_type; size_t m_size; T *m_cache; - + void encache(); }; @@ -78,40 +78,40 @@ void Window<T>::encache() mult[i] = mult[i] * 0.5; } break; - + case BartlettWindow: for (i = 0; i < n/2; ++i) { mult[i] = mult[i] * (i / T(n/2)); mult[i + n/2] = mult[i + n/2] * (1.0 - (i / T(n/2))); } break; - + case HammingWindow: for (i = 0; i < n; ++i) { mult[i] = mult[i] * (0.54 - 0.46 * cos(2 * M_PI * i / n)); } break; - + case HanningWindow: for (i = 0; i < n; ++i) { mult[i] = mult[i] * (0.50 - 0.50 * cos(2 * M_PI * i / n)); } break; - + case BlackmanWindow: for (i = 0; i < n; ++i) { mult[i] = mult[i] * (0.42 - 0.50 * cos(2 * M_PI * i / n) + 0.08 * cos(4 * M_PI * i / n)); } break; - + case GaussianWindow: for (i = 0; i < n; ++i) { mult[i] = mult[i] * exp((-1.0 / (n*n)) * ((T(2*i) - n) * (T(2*i) - n))); } break; - + case ParzenWindow: for (i = 0; i < n; ++i) { mult[i] = mult[i] * (1.0 - fabs((T(2*i) - n) / T(n + 1))); |