libsox-dev 14.4.2+git20190427-2 (amd64 binary) in ubuntu focal

 SoX is the swiss army knife of sound processing.
 .
 This library allow you to convert various formats of computer audio files
 in to other formats. It also allows you to apply
 various effects to sound files.
 .
 This package contains the development files for the SoX library.