Struct FFTAnalyzer

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pub struct FFTAnalyzer {
    fft_size: usize,
    window: Vec<f32>,
    fft_buffer: Vec<f32>,
    bins: Vec<f32>,
    sample_rate: f32,
}

Expand description

FFT analyzer for audio frequency analysis.

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§fft_size: usize

FFT size (power of 2)

§window: Vec<f32>

Window function (Hann window)

§fft_buffer: Vec<f32>

FFT buffer (real and imaginary parts)

§bins: Vec<f32>

Frequency bins

§sample_rate: f32

Sample rate

Implementations§

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impl FFTAnalyzer

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pub fn new(fft_size: usize, sample_rate: f32) -> Option<Self>

Create a new FFT analyzer. Returns None if fft_size is not a power of 2.

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pub fn new_or_default(fft_size: usize, sample_rate: f32) -> Self

Create a new FFT analyzer, panicking on invalid input. Use new for fallible construction.

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pub fn analyze(&mut self, samples: &[f32]) -> &[f32]

Analyze audio samples and return frequency bins.

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pub fn get_bass(&self) -> f32

Get bass level (20-250 Hz).

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pub fn get_mid(&self) -> f32

Get mid level (250-2000 Hz).

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pub fn get_treble(&self) -> f32

Get treble level (2000-20000 Hz).

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fn get_frequency_range(&self, min_freq: f32, max_freq: f32) -> f32

Get energy in a frequency range.

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fn fft_inplace(&mut self)

Simple in-place FFT (Cooley-Tukey algorithm).

Auto Trait Implementations§

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impl UnwindSafe for FFTAnalyzer

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fn downcast(&self) -> &T

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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<S> FromSample<S> for S

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fn from_sample_(s: S) -> S

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where U: From<T>,

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Calls U::from(self).

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