An audio sample rate conversion library for Rust.
This library provides resamplers to process audio in chunks.
The ratio between input and output sample rates is completely free. Implementations are available that accept a fixed length input while returning a variable length output, and vice versa.
The resampling is based on band-limited interpolation using sinc interpolation filters. The sinc interpolation upsamples by an adjustable factor, and then the new sample points are calculated by interpolating between these points. The resampling ratio can be updated at any time.
Synchronous resampling is implemented via FFT. The data is FFT:ed, the spectrum modified, and then inverse FFT:ed to get the resampled data. This type of resampler is considerably faster but doesn't support changing the resampling ratio.
The full documentation can be generated by rustdoc. To generate and view it run:
cargo doc --open
Resample a single chunk of a dummy audio file from 44100 to 48000 Hz.
See also the "fixedin64" example that can be used to process a file from disk.
```rust
use rubato::{Resampler, SincFixedIn, InterpolationType, InterpolationParameters, WindowFunction};
let params = InterpolationParameters {
sinclen: 256,
fcutoff: 0.95,
interpolation: InterpolationType::Nearest,
oversampling_factor: 160,
window: WindowFunction::BlackmanHarris2,
};
let mut resampler = SincFixedIn::
let wavesin = vec![vec![0.0f64; 1024];2]; let wavesout = resampler.process(&waves_in).unwrap(); ```
The rubato crate requires rustc version 1.40 or newer.
License: MIT