$ sudo apt-get update
$ sudo apt-get install libespeak-ng-libespeak1 

libespeak-ng-libespeak1 is installed in your system.

Make ensure the libespeak-ng-libespeak1 package were installed using the commands given below,

$ sudo dpkg-query -l | grep libespeak-ng-libespeak1 *

You will get with libespeak-ng-libespeak1 package name, version, architecture and description in a table

libespeak-ng-libespeak1 package basic information: