Struct SlidingDft 

pub struct SlidingDft<T: Float> { /* private fields */ }

Standard Sliding DFT that maintains all N frequency bins.

After the first N samples have been pushed the spectrum is valid. Each subsequent push updates all N bins in O(N).

Note: This variant can accumulate numerical drift over very long runs. If that is a concern, use ModulatedSdft instead.

Implementations

impl<T: Float> SlidingDft<T>

pub fn new(n: usize) -> Self

Create a new Sliding DFT with window size n.

Panics

Panics if n == 0.

pub fn push(&mut self, sample: Complex<T>)

Push one complex sample and update all frequency bins.

pub fn push_real(&mut self, sample: T)

Convenience: push a real-valued sample (imaginary part = 0).

pub fn spectrum(&self) -> &[Complex<T>]

Current frequency-domain spectrum.

Returns a zero-filled slice until the first N samples have been pushed.

pub fn bin(&self, k: usize) -> Complex<T>

Read a single frequency bin.

Returns Complex::zero() if the index is out of range or not yet initialised.

pub fn magnitude_spectrum(&self) -> Vec<T>

Magnitude spectrum: |X[k]| for each bin.

pub fn power_spectrum(&self) -> Vec<T>

Power spectrum: |X[k]|² for each bin.

pub fn window_size(&self) -> usize

Window size.

pub fn is_initialized(&self) -> bool

Whether the buffer has been filled at least once (spectrum is valid).

pub fn reset(&mut self)

Reset to initial (empty) state, keeping the same window size.

Trait Implementations

impl<T: Clone + Float> Clone for SlidingDft<T>

fn clone(&self) -> SlidingDft<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T: Debug + Float> Debug for SlidingDft<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.