Crate charon_audio 

Charon

Modern Rust music source separation library using state-of-the-art ML inference.

Charon provides a complete, pure-Rust implementation for audio source separation, inspired by Demucs but built with modern Rust ML frameworks (ONNX Runtime via ort, and HuggingFace Candle).

Features

• Multiple ML Backends: Support for ONNX Runtime (production-ready, hardware accelerated) and Candle (pure Rust, flexible)
• Audio Processing: Complete audio I/O with Symphonia (decode any format), Rubato (high-quality resampling), and Hound (WAV encoding)
• Real-time Processing: Support for real-time audio separation using CPAL
• Hardware Acceleration: CUDA, TensorRT, Metal, Accelerate support
• Parallel Processing: Multi-threaded audio processing with Rayon

Quick Start

use charon_audio::{Separator, SeparatorConfig};

// Create a separator with default settings
let separator = Separator::new(SeparatorConfig::default())?;

// Separate an audio file
let stems = separator.separate_file("input.mp3")?;

// Save individual stems
stems.save_all("output_dir")?;

Re-exports

pub use audio::AudioBuffer;

pub use audio::AudioFile;

pub use audio::AudioFormat;

pub use error::CharonError;

pub use error::Result;

pub use model_zoo::ModelMetadata;

pub use model_zoo::ModelZoo;

pub use models::ModelBackend;

pub use models::ModelConfig;

pub use performance::AudioKNN;

pub use performance::BatchProcessor;

pub use performance::PerformanceHint;

pub use performance::PerformanceHints;

pub use performance::SimdOps;

pub use processor::ProcessConfig;

pub use processor::Processor;

pub use realtime::RealtimeSeparator;

pub use separator::Separator;

pub use separator::SeparatorConfig;

pub use separator::Stems;

Modules

audio

Audio I/O and processing utilities

error

Error types for Charon

model_zoo

Pre-trained model zoo for easy model access

models

ML model backends and configuration

performance

Performance optimization utilities inspired by rust-imbalanced-learn

processor

Audio processing pipeline

realtime

Real-time audio processing with CPAL

separator

Main separator API

utils

Utility functions