install_espeak_ng.sh

(
  mkdir -p espeak
  cd espeak
  wget https://github.com/espeak-ng/espeak-ng/archive/refs/tags/1.51.zip
  unzip -qq 1.51.zip
  cd espeak-ng-1.51
  ./autogen.sh
  ./configure --prefix=`pwd`/../usr
  make
  make install
)