Struct FFT 

pub struct FFT { /* private fields */ }

FFT (Fast Fourier Transformation) object

This object computes forward and backward FFTs.

Depending on how aubio was compiled, FFT are computed using one of:

• Ooura
• FFTW3
• vDSP

Implementations

impl FFT

pub fn new(win_size: usize) -> Result<Self>

Create new FFT computation object

pub fn get_win(&self) -> usize

Get window size

pub fn get_fft(&self) -> usize

Get fft size

pub fn do_<'i, 'o, I, O>(&mut self, input: I, spectrum: O) -> Status

where I: Into<FVec<'i>>, O: Into<CVecMut<'o>>,

Compute forward (direct) FFT

pub fn rdo<'i, 'o, I, O>(&mut self, spectrum: I, output: O) -> Status

where I: Into<CVec<'i>>, O: Into<FVecMut<'o>>,

Compute backward (inverse) FFT

pub fn do_complex<'i, 'o, I, O>(&mut self, input: I, compspec: O) -> Status

where I: Into<FVec<'i>>, O: Into<FVecMut<'o>>,

Compute forward (direct) FFT

pub fn rdo_complex<'i, 'o, I, O>(&mut self, compspec: I, output: O) -> Status

where I: Into<FVec<'i>>, O: Into<FVecMut<'o>>,

Compute backward (inverse) FFT

pub fn get_spectrum<'i, 'o, I, O>(compspec: I, spectrum: O) -> Status

where I: Into<FVec<'i>>, O: Into<CVecMut<'o>>,

Convert real/imag spectrum to norm/phas spectrum

pub fn get_realimag<'i, 'o, I, O>(spectrum: I, compspec: O) -> Status

where I: Into<CVec<'i>>, O: Into<FVecMut<'o>>,

Convert norm/phas spectrum to real/imag spectrum

pub fn get_phas<'i, 'o, I, O>(compspec: I, spectrum_phas: O) -> Status

where I: Into<FVec<'i>>, O: Into<CVecPhasMut<'o>>,

Compute phas spectrum from real/imag parts

pub fn get_norm<'i, 'o, I, O>(compspec: I, spectrum_norm: O) -> Status

where I: Into<FVec<'i>>, O: Into<CVecNormMut<'o>>,

Compute norm component from real/imag parts

pub fn get_imag<'i, 'o, I, O>(spectrum: I, compspec: O) -> Status

where I: Into<CVec<'i>>, O: Into<FVecMut<'o>>,

Compute imaginary part from the norm/phas cvec

pub fn get_real<'i, 'o, I, O>(spectrum: I, compspec: O) -> Status

where I: Into<CVec<'i>>, O: Into<FVecMut<'o>>,

Compute real part from the norm/phas cvec

Trait Implementations

impl Drop for FFT

fn drop(&mut self)

Executes the destructor for this type.