sudo apt install meson cmake autoconf libtool libasound2-dev audacity

git clone https://github.com/realwujing/rnnoise.git
git submodule update --init --recursive

cd rnnoise
./autogen.sh
export CFLAGS="-g -O0 -fPIC"
export LDFLAGS="-g -O0 -fPIC"
mkdir build
../configure
make
sudo make install

cd alsa_rnnoise-v1.0
meson build  # generates the ``build'' directory
ninja -C build

cd audioeffects
cp ../alsa_rnnoise-v1.0/build/libasound_module_pcm_rnnoise.so .
sudo ./install.sh

pulseaudio -k
audacity

sudo ./uninstall.sh