unittest - github.com/drowe67/codec2 - Codec 2 is an open source (LGPL 2.1) low bit rate speech codec: http://rowetel.com/codec2.html written in C99 standard C.

Mode	Name	Size
-rw-r--r--	CMakeLists.txt	5288	log plain
-rwxr-xr-x	check_comp.sh	1203	log plain
-rwxr-xr-x	check_peak.sh	1508	log plain
-rwxr-xr-x	check_real_comp.sh	658	log plain
-rw-r--r--	compare_floats.c	2021	log plain
-rw-r--r--	compare_ints.c	3956	log plain
-rwxr-xr-x	fading_files.sh	596	log plain
-rw-r--r--	fdmdv_mem.c	2474	log plain
-rw-r--r--	freedv_700d_comprx.c	4751	log plain
-rw-r--r--	freedv_700d_comptx.c	1276	log plain
-rw-r--r--	function_trace.c	528	log plain
-rw-r--r--	hts1a.h	44182	log plain
-rw-r--r--	hts1a_1300.h	42418	log plain
-rwxr-xr-x	ofdm_check	2095	log plain
-rwxr-xr-x	ofdm_fade.sh	613	log plain
-rwxr-xr-x	ofdm_fade_dpsk.sh	651	log plain
-rw-r--r--	ofdm_mem.c	4785	log plain
-rwxr-xr-x	ofdm_phase_est_bw.sh	983	log plain
-rw-r--r--	ofdm_stack.c	6069	log plain
-rwxr-xr-x	ofdm_time_sync.sh	1158	log plain
-rwxr-xr-x	ota_auto.sh	440	log plain
-rwxr-xr-x	ota_last.sh	1233	log plain
-rwxr-xr-x	ota_summary.sh	1255	log plain
-rwxr-xr-x	ota_test.sh	4001	log plain
-rwxr-xr-x	ota_voice_auto.sh	906	log plain
-rwxr-xr-x	ota_voice_summary.sh	2305	log plain
-rwxr-xr-x	ota_voice_test.sh	8843	log plain
d---------	raw_data_curves	77	log plain
-rwxr-xr-x	reliable_text_fade.sh	726	log plain
-rw-r--r--	sd.c	2325	log plain
-rw-r--r--	sd.h	1062	log plain
-rwxr-xr-x	spectrogram.sh	473	log plain
-rwxr-xr-x	sum_debug_alloc	2156	log plain
-rw-r--r--	t16_8.c	2462	log plain
-rw-r--r--	t16_8_short.c	2250	log plain
-rw-r--r--	t48_8.c	2385	log plain
-rw-r--r--	t48_8_short.c	1775	log plain
-rw-r--r--	t_helpers.c	713	log plain
-rw-r--r--	t_helpers.h	1155	log plain
-rw-r--r--	tcohpsk.c	12399	log plain
-rw-r--r--	tcontphase.c	4405	log plain
-rw-r--r--	tdeframer.c	4448	log plain
-rw-r--r--	tesno_est.c	781	log plain
-rwxr-xr-x	test_700c_eq.sh	472	log plain
-rw-r--r--	test_phi0.c	1660	log plain
-rw-r--r--	tfdmdv.c	11717	log plain
-rw-r--r--	tfifo.c	2101	log plain
-rw-r--r--	tfmfsk.c	6195	log plain
-rw-r--r--	tfreedv_2400A_rawdata.c	3505	log plain
-rw-r--r--	tfreedv_2400B_rawdata.c	3505	log plain
-rw-r--r--	tfreedv_800XA_rawdata.c	4504	log plain
-rw-r--r--	tfreedv_data_channel.c	9549	log plain
-rw-r--r--	tfsk.c	7456	log plain
-rw-r--r--	tfsk_llr.c	1522	log plain
-rw-r--r--	thash.c	415	log plain
-rwxr-xr-x	tnc1_high_snr.sh	2912	log plain
-rwxr-xr-x	tnc4_high_snr_ping.sh	3400	log plain
-rw-r--r--	tnewamp1.c	10711	log plain
-rw-r--r--	tnlp.c	4243	log plain
-rw-r--r--	tofdm.c	21825	log plain
-rw-r--r--	tofdm_acq.c	3064	log plain
-rw-r--r--	tprede.c	980	log plain
-rw-r--r--	tqam16.c	1114	log plain
-rw-r--r--	tquisk_filter.c	1266	log plain
-rw-r--r--	tst_codec2_fft_init.c	2595	log plain
-rw-r--r--	tvq_mbest.c	918	log plain