Function istft 

pub fn istft<T: Float>(
    spectrogram: &[Vec<Complex<T>>],
    hop_size: usize,
    window: WindowFunction,
) -> Vec<T>

Compute Inverse Short-Time Fourier Transform (ISTFT).

Reconstructs a time-domain signal from a spectrogram using overlap-add.

Arguments

• spectrogram - Spectrogram (Vec of spectra)
• hop_size - Number of samples between frames (must match STFT)
• window - Window function (must match STFT)

Returns

Reconstructed time-domain signal.

Example

use oxifft::streaming::{stft, istft, WindowFunction};

let signal = vec![1.0f64; 1024];
let spectrogram = stft(&signal, 256, 64, WindowFunction::Hann);
let reconstructed = istft(&spectrogram, 64, WindowFunction::Hann);