Struct Fft

pub struct Fft { /* private fields */ }

FFT parameter data structure.

Implementations

impl Fft

pub fn channels(&self) -> usize

Number of channels in spectrum.

pub fn spectrum_size(&self) -> usize

Number of entries in this spectrum window.

Divide this by the output rate to get the hz per entry.

pub fn spectrum(&self, channel: usize) -> &[c_float]

Channel spectrum data.

Values inside the float buffer are typically between 0 and 1.0. Each top level array represents one PCM channel of data.

Address data as spectrum(channel)[bin]. A bin is 1 fft window entry.

Only read/display half of the buffer typically for analysis as the 2nd half is usually the same data reversed due to the nature of the way FFT works.

pub fn data(&self) -> &[c_float]

Per channel spectrum arrays.

Trait Implementations

impl Clone for Fft

fn clone(&self) -> Fft

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Fft

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

Formats the value using the given formatter.

impl PartialEq for Fft

fn eq(&self, other: &Fft) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl ReadableParameter for Fft

fn get_parameter(dsp: Dsp, index: c_int) -> Result<Self>

Get the parameter at index.

fn get_parameter_string(dsp: Dsp, index: c_int) -> Result<Utf8CString>

Get the parameter string at index.

impl ReadableParameterIndex<Fft> for SpectrumData

const TYPE: DspType = DspType::Fft

What type of DSP this index is for.

fn into_index(self) -> c_int

Convert self into a DSP index.

impl StructuralPartialEq for Fft