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 686d023c6b..02ca426d66 100644 --- a/libs/qm-dsp/base/Window.h +++ b/libs/qm-dsp/base/Window.h @@ -72,53 +72,53 @@ void Window<T>::encache() for (i = 0; i < n; ++i) mult[i] = 1.0; switch (m_type) { - + case RectangularWindow: for (i = 0; i < n; ++i) { 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))); } break; } - + m_cache = mult; } |