libspandsp-dev software package provides Telephony signal processing library - development headers, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install libspandsp-dev
libspandsp-dev is installed in your system.
Make ensure the libspandsp-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep libspandsp-dev *
You will get with libspandsp-dev package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | Library development |
| Package | libspandsp-dev |
| Version | 0.0.6~pre21-2 |
| Description | Telephony signal processing library - development headers |
| Sub Section | libdevel |