/usr/ is in libsoxr-dev 0.1.1-1.
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..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/soxr-lsr.pc
/usr/lib/x86_64-linux-gnu/pkgconfig/soxr.pc
/usr/include/
/usr/include/soxr.h
/usr/include/soxr-lsr.h
/usr/share/
/usr/share/doc/
/usr/share/doc/libsoxr-dev/
/usr/share/doc/libsoxr-dev/README
/usr/share/doc/libsoxr-dev/copyright
/usr/share/doc/libsoxr-dev/examples/
/usr/share/doc/libsoxr-dev/examples/README
/usr/share/doc/libsoxr-dev/examples/2-stream.C
/usr/share/doc/libsoxr-dev/examples/1-single-block.c
/usr/share/doc/libsoxr-dev/examples/4-split-channels.c
/usr/share/doc/libsoxr-dev/examples/examples-common.h
/usr/share/doc/libsoxr-dev/examples/3-options-input-fn.c
/usr/share/doc/libsoxr-dev/examples/1a-lsr.c
/usr/share/doc/libsoxr-dev/examples/5-variable-rate.c
/usr/share/doc/libsoxr-dev/NEWS.gz
/usr/lib/x86_64-linux-gnu/libsoxr.so
/usr/lib/x86_64-linux-gnu/libsoxr-lsr.so
/usr/share/doc/libsoxr-dev/changelog.Debian.gz