loudness.hpp

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#ifndef EDSP_LOUDNESS_HPP
#define EDSP_LOUDNESS_HPP

#include <edsp/feature/temporal/energy.hpp>
#include <cmath>

namespace edsp { namespace feature { inline namespace perceptual {

    template <typename ForwardIt>
    constexpr auto loudness(ForwardIt first, ForwardIt last) {
        const auto e = temporal::energy(first, last);
        return std::pow(e, 0.67);
    }

}}}

#endif //EDSP_LOUDNESS_HPP