Here is a list of all documented files with brief descriptions:

a2lsp.c
allpole.c
allzero.c
autocor.c
bitpack16.c
bitpack16.h
bitpack32.c
bitpack32.h
bitstream.c
bitstream.h
broadvoice/broadvoice.h
broadvoice/private/broadvoice.h
broadvoice.h
broadvoice_tests.c
bv16_tests.c
bv16cnst.h
bv16coarse_pitch.c
bv16decoder.c
bv16encoder.c
bv16excdec.c
bv16excquan.c
bv16externs.h
bv16fine_pitch.c
bv16gaindec.c
bv16gainquan.c
bv16levelest.c
bv16lspdec.c
bv16lspquan.c
bv16plc.c
bv16postfilter.c
bv16postfilter.h
bv16ptdec.c
bv16ptquan.c
bv16strct.h
bv16tables.c
bv32_tests.c
bv32cnst.h
bv32coarse_pitch.c
bv32decoder.c
bv32encoder.c
bv32excdec.c
bv32excquan.c
bv32externs.h
bv32fine_pitch.c
bv32gaindec.c
bv32gainquan.c
bv32levelest.c
bv32lspdec.c
bv32lspquan.c
bv32plc.c
bv32ptdec.c
bv32ptquan.c
bv32strct.h
bv32tables.c
bvcommon.h
cmtables.c
config.h
g192_bit_stream.c
g192_bit_stream.h
inttypes.h
levdur.c
lsp2a.c
stblchck.c
stblzlsp.c
tgmath.h
time.h
timing.h
typedef.h
unistd.h
utility.c
utility.h
version.h