/usr/lib/speech_tools/config/modules/ is in libestools2.1-dev 1:2.1~release-8.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/speech_tools/config/modules/Makefile
/usr/lib/speech_tools/config/modules/debugging.mak
/usr/lib/speech_tools/config/modules/descriptions
/usr/lib/speech_tools/config/modules/dmalloc.mak
/usr/lib/speech_tools/config/modules/editline.mak
/usr/lib/speech_tools/config/modules/efence.mak
/usr/lib/speech_tools/config/modules/esd_audio.mak
/usr/lib/speech_tools/config/modules/freebsd16_audio.mak
/usr/lib/speech_tools/config/modules/irix_audio.mak
/usr/lib/speech_tools/config/modules/linux16_audio.mak
/usr/lib/speech_tools/config/modules/macosx_audio.mak
/usr/lib/speech_tools/config/modules/mplayer_audio.mak
/usr/lib/speech_tools/config/modules/nas_audio.mak
/usr/lib/speech_tools/config/modules/psola_tm.mak
/usr/lib/speech_tools/config/modules/pulse_audio.mak
/usr/lib/speech_tools/config/modules/sun16_audio.mak
/usr/lib/speech_tools/config/modules/tcl.mak
/usr/lib/speech_tools/config/modules/win32_audio.mak