A speech noise reduction algorithm works available. Voice calls speex library noise code that can be run directly, directly see the noise reduction.

speex_ns\Debug\speex_ns.exe
........\.....\speex_ns.ilk
........\.....\speex_ns.pdb
........\speex_ns\Debug\CL.read.1.tlog
........\........\.....\CL.write.1.tlog
........\........\.....\fftwrap.obj
........\........\.....\filterbank.obj
........\........\.....\link-cvtres.read.1.tlog
........\........\.....\link-cvtres.write.1.tlog
........\........\.....\link-rc.read.1.tlog
........\........\.....\link-rc.write.1.tlog
........\........\.....\link.read.1.tlog
........\........\.....\link.write.1.tlog
........\........\.....\mdf.obj
........\........\.....\mian.obj
........\........\.....\preprocess.obj
........\........\.....\smallft.obj
........\........\.....\speex_ns.lastbuildstate
........\........\.....\speex_ns.log
........\........\.....\vc110.idb
........\........\.....\vc110.pdb
........\........\mian.c
........\........\preprocess.c
........\........\speex\arch.h
........\........\.....\bits.c
........\........\.....\buffer.c
........\........\.....\cb_search.c
........\........\.....\cb_search.h
........\........\.....\cb_search_arm4.h
........\........\.....\cb_search_bfin.h
........\........\.....\cb_search_sse.h
........\........\.....\echo_diagnostic.m
........\........\.....\exc_10_16_table.c
........\........\.....\exc_10_32_table.c
........\........\.....\exc_20_32_table.c
........\........\.....\exc_5_256_table.c
........\........\.....\exc_5_64_table.c
........\........\.....\exc_8_128_table.c
........\........\.....\fftwrap.c
........\........\.....\fftwrap.h
........\........\.....\filterbank.c
........\........\.....\filterbank.h
........\........\.....\filters.c
........\........\.....\filters.h
........\........\.....\filters_arm4.h
........\........\.....\filters_bfin.h
........\........\.....\filters_sse.h
........\........\.....\fixed_arm4.h
........\........\.....\fixed_arm5e.h
........\........\.....\fixed_bfin.h
........\........\.....\fixed_debug.h
........\........\.....\fixed_generic.h
........\........\.....\gain_table.c
........\........\.....\gain_table_lbr.c
........\........\.....\hexc_10_32_table.c
........\........\.....\hexc_table.c
........\........\.....\high_lsp_tables.c
........\........\.....\jitter.c
........\........\.....\kiss_fft.c
........\........\.....\kiss_fft.h
........\........\.....\kiss_fftr.c
........\........\.....\kiss_fftr.h
........\........\.....\lpc.c
........\........\.....\lpc.h
........\........\.....\lpc_bfin.h
........\........\.....\lsp.c
........\........\.....\lsp.h
........\........\.....\lsp_bfin.h
........\........\.....\lsp_tables_nb.c
........\........\.....\ltp.c
........\........\.....\ltp.h
........\........\.....\ltp_arm4.h
........\........\.....\ltp_bfin.h
........\........\.....\ltp_sse.h
........\........\.....\Makefile.am
........\........\.....\Makefile.in
........\........\.....\math_approx.h
........\........\.....\mdf.c
........\........\.....\misc_bfin.h
........\........\.....\modes.c
........\........\.....\modes.h
........\........\.....\modes_wb.c
........\........\.....\nb_celp.c
........\........\.....\nb_celp.h
........\........\.....\os_support.h
........\........\.....\preprocess.c
........\........\.....\pseudofloat.h
........\........\.....\quant_lsp.c
........\........\.....\quant_lsp.h
........\........\.....\quant_lsp_bfin.h
........\........\.....\resample.c
........\........\.....\resample_sse.h
........\........\.....\sb_celp.c
........\........\.....\sb_celp.h
........\........\.....\scal.c
........\........\.....\smallft.c
........\........\.....\smallft.h
........\........\.....\speex.c
........\........\.....\speex.h
........\........\.....\speex_bits.h

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