rconvolve

Fast convolution and impulse response extraction for audio applications in Rust.

Overview

rconvolve provides FFT-based convolution and deconvolution for audio processing. It supports:

• Batch and real-time convolution for applying impulse responses to audio
• Exponential sine sweep generation for acoustic measurement
• Impulse response extraction from recorded sweeps via deconvolution
• Mono, stereo, and true stereo (4-channel matrix) processing
• WebAssembly support for browser-based applications
• no_std compatibility (requires alloc) for embedded systems

Live Demo: Try the WebAssembly demo at rconvolve.pages.dev

Installation

Add to your Cargo.toml:

[dependencies]
rconvolve = "*"

Feature Flags

Quick Start

Batch Convolution

See the example in the rconvolve::convolve module documentation.

Real-Time Convolution

See the example in the rconvolve::convolve::PartitionedConvolution documentation.

Impulse Response Extraction

See the example in the rconvolve::deconvolve module documentation.

Examples

The crate includes some examples:

apply_reverb

Apply convolution reverb to a WAV file:

cargo run --example apply_reverb -- input.wav impulse_response.wav output.wav

realtime_reverb

Real-time convolution reverb using system audio input/output:

cargo run --example realtime_reverb -- impulse_response.wav
cargo run --example realtime_reverb -- --test-ir  # Use generated test IR

simple_wav_to_ir

Convert a recorded sweep to an impulse response:

cargo run --example simple_wav_to_ir -- recorded_sweep.wav output_ir.wav

WebAssembly

cargo install wasm-pack
wasm-pack build --target web --release

See the full documentation for the WASM API reference, or try the live demo.

License

Licensed under either of Apache License, Version 2.0 or MIT license at your option.