extras.hpp File Reference

#include <memory_resource>
#include <nk/value/value.hpp>
#include <tuple>
#include <utility>

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Functions
Value	nk::signal::dftmtx (size_t N, std::pmr::memory_resource *mr=nullptr)
	N×N complex DFT matrix.
Value	nk::signal::bitrevorder (const Value &x, std::pmr::memory_resource *mr=nullptr)
	Re-order a sequence by bit-reversed indices.
Value	nk::signal::dst (const Value &x, std::pmr::memory_resource *mr=nullptr)
	Type-II Discrete Sine Transform.
Value	nk::signal::idst (const Value &y, std::pmr::memory_resource *mr=nullptr)
	Inverse Type-II DST.
Value	nk::signal::rceps (const Value &x, std::pmr::memory_resource *mr=nullptr)
	Real cepstrum: real(ifft(log(abs(fft(x))))).
std::pair< Value, Value >	nk::signal::rcepsMinPhase (const Value &x, std::pmr::memory_resource *mr=nullptr)
	Real cepstrum and its minimum-phase reconstruction ([y, ym] = rceps(x)).
Value	nk::signal::cceps (const Value &x, std::pmr::memory_resource *mr=nullptr, double *ndOut=nullptr)
	Complex cepstrum: ifft(log(fft(x))) with phase unwrapping.
Value	nk::signal::icceps (const Value &c, std::pmr::memory_resource *mr=nullptr)
	Inverse complex cepstrum: real(ifft(exp(fft(c)))).