Native Instruments NCW Audio File Format

Description

ncw-decode is a zero-dependency Rust-based library to decode NCW files. It also includes a wav unpack cli utility. It serves as part of a wider reverse engineering effort of proprietary audio formats, and this particular library is used in ni-file.

NCW is a compression algorithm which is essentially DPCM and bit truncation.

Requirements

Rust 1.50 or higher

Installation

To install the cli utility, install it from the example:

git clone https://github.com/monomadic/ncw.git

Compile the project:

cd ncw-decode
cargo build --release

Usage

Run the program with the following command-line arguments:

ncw-decode <INPUT> <OUTPUT>

<INPUT>: Path to the input NCW file.
<OUTPUT>: Path where the output WAV file will be saved.

Contribution