This solution use amr-nb voice codec to code and decode .wav files in order to sound quality on different bitrates. IDE: VS 2010 In solution four projects 1. ConvertWavToData - convert .wav file to PCM short file. 2. AMRNBCodec - amr-nb encodec 3. AMRNBDecodec - amr-nb decodec 4. ConvertDataToWav - convert PCM short file to .wav file.

AMRCodec\AMRCodec\agc.cpp
........\........\agc.h
........\........\allmodes.txt
........\........\allo_8k.dat
........\........\allo_8k.ser
........\........\ALLO_8k.wav
........\........\allo_8k_dec.dat
........\........\AMRCodec.vcxproj
........\........\AMRCodec.vcxproj.filters
........\........\AMRCodec.vcxproj.user
........\........\AMRNBCodec.cpp
........\........\amr_chk.csh
........\........\autocorr.cpp
........\........\autocorr.h
........\........\az_lsp.cpp
........\........\az_lsp.h
........\........\a_refl.cpp
........\........\a_refl.h
........\........\basicop2.cpp
........\........\basic_op.h
........\........\bgnscd.cpp
........\........\bgnscd.h
........\........\bitno.tab
........\........\bits2prm.cpp
........\........\bits2prm.h
........\........\b_cn_cod.cpp
........\........\b_cn_cod.h
........\........\c1035pf.cpp
........\........\c1035pf.h
........\........\c2_11pf.cpp
........\........\c2_11pf.h
........\........\c2_11pf.tab
........\........\c2_9pf.cpp
........\........\c2_9pf.h
........\........\c2_9pf.tab
........\........\c3_14pf.cpp
........\........\c3_14pf.h
........\........\c4_17pf.cpp
........\........\c4_17pf.h
........\........\c8_31pf.cpp
........\........\c8_31pf.h
........\........\calc_cor.cpp
........\........\calc_cor.h
........\........\calc_en.cpp
........\........\calc_en.h
........\........\cbsearch.cpp
........\........\cbsearch.h
........\........\cl_ltp.cpp
........\........\cl_ltp.h
........\........\cnst.h
........\........\cnst_vad.h
........\........\coder.cpp
........\........\cod_amr.cpp
........\........\cod_amr.h
........\........\convolve.cpp
........\........\convolve.h
........\........\copy.cpp
........\........\copy.h
........\........\corrwght.tab
........\........\cor_h.cpp
........\........\cor_h.h
........\........\count.cpp
........\........\count.h
........\........\c_g_aver.cpp
........\........\c_g_aver.h
........\........\d1035pf.cpp
........\........\d1035pf.h
........\........\d2_11pf.cpp
........\........\d2_11pf.h
........\........\d2_9pf.cpp
........\........\d2_9pf.h
........\........\d3_14pf.cpp
........\........\d3_14pf.h
........\........\d4_17pf.cpp
........\........\d4_17pf.h
........\........\d8_31pf.cpp
........\........\d8_31pf.h
........\........\Debug\agc.obj
........\........\.....\AMRCodec.Build.CppClean.log
........\........\.....\AMRCodec.lastbuildstate
........\........\.....\AMRCodec.log
........\........\.....\AMRNBCodec.Build.CppClean.log
........\........\.....\AMRNBCodec.exe.embed.manifest
........\........\.....\AMRNBCodec.exe.embed.manifest.res
........\........\.....\AMRNBCodec.exe.intermediate.manifest
........\........\.....\AMRNBCodec.lastbuildstate
........\........\.....\AMRNBCodec.obj
........\........\.....\AMRNBCodec.pch
........\........\.....\AMRNBCodec_manifest.rc
........\........\.....\autocorr.obj
........\........\.....\az_lsp.obj
........\........\.....\a_refl.obj
........\........\.....\basicop2.obj
........\........\.....\bgnscd.obj
........\........\.....\bits2prm.obj
........\........\.....\b_cn_cod.obj
........\........\.....\c1035pf.obj
........\........\.....\c2_11pf.obj
........\........\.....\c2_9pf.obj
........\........\.....\c3_14pf.obj

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