Struct RealFftC2cPlan 

pub struct RealFftC2cPlan<T: FftNum = f64> { /* private fields */ }

Complex-to-complex FFT plan (f64) backed by rustfft.

Both forward and inverse directions share a single scratch buffer sized to the larger of the two inplace scratch requirements.

Implementations

impl<T: FftNum> RealFftC2cPlan<T>

pub fn new(n_fft: usize) -> Self

Create a C2c plan for transform size n_fft.

Trait Implementations

impl<T: FftNum> C2cPlan<T> for RealFftC2cPlan<T>

fn n_fft(&self) -> usize

fn forward(&mut self, buf: &mut [Complex<T>]) -> SpectrogramResult<()>

Forward DFT: X[k] = Σ x[n] exp(−2πi·k·n/N)

fn inverse(&mut self, buf: &mut [Complex<T>]) -> SpectrogramResult<()>

Inverse DFT (unnormalized): x[n] = Σ X[k] exp(+2πi·k·n/N)

impl<T: FftNum> Send for RealFftC2cPlan<T>