Swift Implementation - RNNoise

Swift wrapper for RNNoise C library. Building manually is not required. Run ./autogen.sh or upload your own model to Libraries/RNNoise before running. It is recommended to clone this repository and adding the package locally.

How To Use

1. Import RNNoiseSwift.
2. Use function process(_ buffer: AVAudioPCMBuffer) -> AVAudioPCMBuffer?

Note: Buffers must be RAW PCM format, Float32.

How To Build Manually

Building C Library For Apple Devices

Make sure git submodule is initialized.

1. cd ./Libraries/RNNoise
2. Run ./autogen.sh to download latest model.
3. Run ./configure with custom CFLAGS.

• Command for arm64 Apple iOS: ./configure --host=arm-apple-darwin CC="$(xcrun --sdk iphoneos --find clang)" CFLAGS="-arch arm64 -isysroot $(xcrun --sdk iphoneos --show-sdk-path)"
• Command for arm64 Apple MacOS: ./configure CFLAGS="-arch arm64"

Note: The C library has to be built twice, once for iOS and once for MacOS, in order to make it compatible for XCFramework.

4. Build C library with make

Note: Clean build files with make clean

Build XCFramework

1. Archive XCFramework

xcodebuild archive \
-scheme RNNoise \
-destination "generic/platform=iOS" \
-archivePath "RNNoise" \
SKIP_INSTALL=NO \
BUILD_LIBRARY_FOR_DISTRIBUTION=YES

2. Build for XCFramework - Building C library beforehand is required

xcodebuild -create-xcframework \
    -library Libraries/RNNoise/.libs/librnnoise.a \
    -headers Libraries/RNNoise/include \
    -output RNNoise.xcframework

Sign XCFramework

Before proceeding check for valid signature with codesign -dvvv ./RNNoise.xcframework

1. Find valid certificate name security find-identity -p codesigning
2. Sign xcframework with codesign --force --sign "Your Certificate Name" --timestamp ./RNNoise.xcframework