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M17: IirFilter code cleanup

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This commit is contained in:
f4exb 2022-07-27 23:30:09 +02:00
parent 06a0f051e9
commit 820a5dc992
1 changed files with 9 additions and 8 deletions
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17
modemm17/IirFilter.h
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@ -13,12 +13,9 @@ namespace modemm17
template <size_t N>
struct BaseIirFilter : FilterBase<float>
{
const std::array<float, N>& numerator_;
const std::array<float, N> denominator_;
std::array<float, N> history_{0};
BaseIirFilter(const std::array<float, N>& b, const std::array<float, N>& a)
: numerator_(b), denominator_(a)
BaseIirFilter(const std::array<float, N>& b, const std::array<float, N>& a) :
numerator_(b),
denominator_(a)
{
history_.fill(0.0);
}
@ -40,11 +37,15 @@ struct BaseIirFilter : FilterBase<float>
return result;
}
private:
const std::array<float, N>& numerator_;
const std::array<float, N> denominator_;
std::array<float, N> history_{0};
};
template <size_t N>
BaseIirFilter<N> makeIirFilter(
const std::array<float, N>& b, const std::array<float, N>& a)
BaseIirFilter<N> makeIirFilter(const std::array<float, N>& b, const std::array<float, N>& a)
{
return std::move(BaseIirFilter<N>(b, a));
}