diff options
Diffstat (limited to 'core/bsinc_tables.cpp')
| -rw-r--r-- | core/bsinc_tables.cpp | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/core/bsinc_tables.cpp b/core/bsinc_tables.cpp index ff73c301..a81167d2 100644 --- a/core/bsinc_tables.cpp +++ b/core/bsinc_tables.cpp @@ -9,8 +9,8 @@ #include <memory> #include <stdexcept> +#include "alnumbers.h" #include "core/mixer/defs.h" -#include "math_defs.h" namespace { @@ -28,7 +28,7 @@ constexpr double Sinc(const double x) constexpr double epsilon{std::numeric_limits<double>::epsilon()}; if(!(x > epsilon || x < -epsilon)) return 1.0; - return std::sin(al::MathDefs<double>::Pi()*x) / (al::MathDefs<double>::Pi()*x); + return std::sin(al::numbers::pi*x) / (al::numbers::pi*x); } /* The zero-order modified Bessel function of the first kind, used for the @@ -87,9 +87,9 @@ constexpr double Kaiser(const double beta, const double k, const double besseli_ constexpr double CalcKaiserWidth(const double rejection, const uint order) noexcept { if(rejection > 21.19) - return (rejection - 7.95) / (order * 2.285 * al::MathDefs<double>::Tau()); + return (rejection - 7.95) / (2.285 * al::numbers::pi*2.0 * order); /* This enforces a minimum rejection of just above 21.18dB */ - return 5.79 / (order * al::MathDefs<double>::Tau()); + return 5.79 / (al::numbers::pi*2.0 * order); } /* Calculates the beta value of the Kaiser window. Rejection is in dB. */ |