Trait basic_dsp::SymmetricFrequencyDomainOperations
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pub trait SymmetricFrequencyDomainOperations<T>: DataVector<T> where T: RealNumber { type RealTimePartner; fn plain_sifft(self) -> VecResult<Self::RealTimePartner>; fn sifft(self) -> VecResult<Self::RealTimePartner>; fn windowed_sifft(self, window: &WindowFunction<T>) -> VecResult<Self::RealTimePartner>; }
Defines all operations which are valid on DataVectors
containing frequency domain data and
the data is assumed to half of complex conjungate symmetric spectrum round 0 Hz where
the 0 Hz element itself is real.
Failures
All operations in this trait fail with VectorMustBeInFrquencyDomain
if the vector isn't in frequency domain or with VectorMustBeConjSymmetric
if the first element (0Hz)
isn't real.
Associated Types
type RealTimePartner
Required Methods
fn plain_sifft(self) -> VecResult<Self::RealTimePartner>
Performs a Symmetric Inverse Fast Fourier Transformation under the assumption that self
contains half of a symmetric spectrum starting from 0 Hz. This assumption
isn't verified and no error is raised if the spectrum isn't symmetric. The reason
for this is that there is no robust verification possible.
The argument indicates whether the resulting real vector should have 2*N
or 2*N-1
points.
This version of the IFFT neither applies a window nor does it scale the vector.
fn sifft(self) -> VecResult<Self::RealTimePartner>
Performs a Symmetric Inverse Fast Fourier Transformation under the assumption that self
contains half of a symmetric spectrum starting from 0 Hz. This assumption
isn't verified and no error is raised if the spectrum isn't symmetric. The reason
for this is that there is no robust verification possible.
The argument indicates whether the resulting real vector should have 2*N
or 2*N-1
points.
fn windowed_sifft(self, window: &WindowFunction<T>) -> VecResult<Self::RealTimePartner>
Performs a Symmetric Inverse Fast Fourier Transformation (SIFFT) and removes the FFT window.
The SIFFT is performed under the assumption that self
contains half of a symmetric spectrum starting from 0 Hz. This assumption
isn't verified and no error is raised if the spectrum isn't symmetric. The reason
for this is that there is no robust verification possible.
The argument indicates whether the resulting real vector should have 2*N
or 2*N-1
points.
Implementors
impl SymmetricFrequencyDomainOperations<f32> for GenericDataVector<f32>
impl SymmetricFrequencyDomainOperations<f32> for ComplexFreqVector<f32>
impl SymmetricFrequencyDomainOperations<f64> for GenericDataVector<f64>
impl SymmetricFrequencyDomainOperations<f64> for ComplexFreqVector<f64>