STL 2026 ITU Submission#6
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Add bitno parameter to init_speech_voltmeter() to allow the P.56 Method B speech voltmeter to operate correctly with 24-bit and 32-bit A/D converters instead of being limited to 16-bit (approx. 90 dB dynamic range). Changes: - sv-p56.h: SVP56_state now stores bitno and thres_no (bitno-1); arrays expanded to 31 elements to support 32-bit; init_speech_voltmeter prototype updated to accept bitno parameter - sv-p56.c: init_speech_voltmeter() derives threshold count from bitno (N-1); maxP/maxN are now computed as ±2^(bitno-1) instead of hard-coded ±32768; speech_voltmeter() uses state->thres_no instead of THRES_NO macro - actlevel.c: passes bitno to init_speech_voltmeter() - sv56demo.c: passes bitno to init_speech_voltmeter() Backward compatible: 16-bit input produces identical results to the original implementation (THRES_NO=15, maxP=-32768, maxN=32767). Note: No C compiler available in this environment to verify compilation. Build should be verified with 'cmake --build build && ctest' before merging.
* Set minimum CMake version to 3.1...3.25 in CMakeLists.txt * Remove unnecessary entries from .gitignore * Add .vscode/ to .gitignore for IDE configuration
… the STL build; add regression tests under src/gain_chk/test_data and README for build/ctest usage.
* Update LongTermLevel and Delta array size to support SVP56_MAX_THRESHOLDS. * Modify threshold-related structures to accommodate dynamic bit depth. * Add new entries to .gitignore for build artifacts and output files.
Introduce wav_io library (src/utl/wav_io.c, wav_io.h) providing transparent WAV and raw PCM file handling for all STL tools. Features: - Auto-detect WAV input via RIFF header magic bytes - Output format determined by filename extension (.wav = WAV, else raw) - Supports 8-bit, 16-bit, 24-bit, 32-bit PCM and 32-bit IEEE float - Multi-channel WAV: extracts channel 1 with warning - Parameter validation: expected sample rate, channels, and bit depth - Full backward compatibility: raw PCM workflows unchanged Integrated into 28 tools across all categories: - Codecs: g711demo, g711iplc, g722demo, encg722, decg722, g726demo, vbr-g726, g727demo, rpedemo - Filters: firdemo, filter, cirsdemo, pcmdemo, c712demo - Measurement: sv56demo, actlevel, bs1770demo, mnrudemo, calc-snr, esdru, freqresp - Processing: reverb, stereoop - Utilities: scaldemo, signal-diff, astrip, fdelay, measure, oper Includes unit tests (test_wav_io) and LaTeX manual documentation.
… algorithm, command line syntax, and implementation. Integrate the new chapter into the STL manual.
…djusted equation formatting for clarity and added gain_chk.tex to the build process.
- CMakeLists.txt, src/wmc_tool/CMakeLists.txt: Update cmake_minimum_required to VERSION 3.10...3.31 (range syntax required by CMake >= 3.28) - shiftbit.c: Pass FILE* (Fi) instead of int fd (fi) to fread() - mnru.c: Assign 0 instead of NULL to long field s->seed - endian.c: Add void return types to reverse_endian_short/long, use unsigned types in test functions to match signatures
Replace K&R-style empty-parentheses function declarations with proper ANSI C prototypes. The missing prototypes caused default argument promotion (float->double) at call sites, while function bodies expected float parameters. This ABI mismatch causes segfaults on GCC 6+, Clang, MSVC, and ARM64 platforms. Convert two K&R function definitions (RES_ENG, A_SST) to ANSI style. Fix all forward declarations in .c files to include parameter types. Add platform-specific bit-exact verification tests with ARM64 reference files. The x86 path uses the original voice.out/voice-pf.out references. Fixes openitu#132, Fixes openitu#41
- .gitattributes: Force LF for basop CSV references and freqresp asciiOut.ref (prevents CRLF mismatch with test output on systems with core.autocrlf=true). Mark cftest1.dat as binary to prevent git from injecting CR bytes into the test input file. - src/fir/CMakeLists.txt: Add -equiv 1 tolerance to filter21/22/25/26/27 verify tests. These IIR cascade filters produce ±1 LSB differences across platforms due to floating-point rounding — consistent with all other filter tests which already use -equiv 1. - src/g711iplc/CMakeLists.txt: Add -abstol 1 to g711iplc1/3-verify. Same ±1 LSB cross-platform rounding differences. - src/esdru/CMakeLists.txt: Add missing -double flag to esdru1-verify. The test compares double-precision files but was reading them as 16-bit shorts, causing spurious mismatches. - src/wmc_tool/CMakeLists.txt: Replace deprecated find_package(PythonInterp) with find_package(Python3 COMPONENTS Interpreter). The old module fails to find Python on modern systems, causing all wmc_tool tests to report BAD_COMMAND. All fixes are transparent: no tool source code is modified, no algorithm behavior changes. Tools produce identical output on all platforms.
* Update sv56.tex to include new parameters for bit depth. * Modify CMakeLists.txt to add new executables for testing. * Enhance actlevel.c to support variable bit-width input files. * Introduce sv56-convert.c for converting PCM files with different bit depths. * Create sv56-util.h for utility functions related to bit-width handling. * Add sv56test.c for testing the speech voltmeter with variable bit widths.
- Replace Travis CI with GitHub Actions (Linux/macOS/Windows + LaTeX) - src/unsup/compfile.c: replace read()/lseek() with fread()/fseek() - src/basop/test_framework/test/test_precision.c: binary mode CSV output Relates to openitu#120, openitu#142
Add .gitattributes with eol=native for .ref files so they are checked out with platform-native line endings, matching gain_chk stderr output. Normalize stored ref files to LF.
- Move chapter after freqresp (spectral analysis tools grouped together) - Add labels to chapter and all sections for cross-referencing - Add output file format subsection describing -t results structure - Add usage examples with sample output and threshold check - Fix data format description (remove incorrect endianness wording)
Pr 179 fixes CRLF and improves doc. Thanks to @ludomal
* Add voice_16bit.ref with audio level data * Add voice_24bit.ref with audio level data * Add voice_32bit.ref with audio level data * Add voice_24.src and voice_32.src as binary files
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added 27 commits
May 31, 2026 22:16
The run-on-arch approach segfaults in the linker under QEMU user-mode. Cross-compiling natively and using QEMU only for test execution avoids this.
Delay-and-error profile to frame-erasure pattern conversion tool.
Provided by Fraunhofer IIS via 3GPP Tdoc S4-121077.
Changes vs original PR:
- Moved from src/dlyerr_2_errpat/ into src/eid/ (groups all EID tools)
- Added argc bounds checks before argv[2] access
- Replaced abort() with error return code
- Error paths now return non-zero via retval
- Fixed strstr("-help") to use exact strcmp
- Added braces on while loop
- No change to root CMakeLists.txt (already has src/eid)
EID for 3GPP AMR codec using G.192 frame erasure patterns. Originally by Balazs Kovesi & Stephane Ragot (Orange SA), from 3GPP S4-120998. Changes vs original PR: - Moved from src/eid-amr/ into src/eid/ (groups all EID tools) - Links softbit.c and uses read_g192() instead of raw fread - Uses ugstdemo.h RB/WB macros for portable binary file open - Uses G192_FER/G192_SYNC constants instead of magic numbers - Added ITU-T GPL license header - Fixed printf format: %ld for long counters - Division-by-zero guard on empty input - Better error message on invalid pattern value - No change to root CMakeLists.txt (already has src/eid)
- SHQ2/SHQ3: super-high-quality low-pass filters for rate-change factors 2 and 3 - HP50_32KHZ/HP50_48KHZ: 50 Hz high-pass filters at 32 and 48 kHz - Updated filter.c main to support new filter names - Added filter coefficients in fir-flat.c and fir-wb.c - Added CTest cases (filter28-31) with reference outputs - Updated doc/manual/rate.tex with frequency response figures - Added PDF graphics for new filter responses From PR openitu#188 by Stephane Ragot (Orange SA), used in 3GPP SA4 EVS/IVAS.
Adds section describing the EID-AMR tool's purpose, its relationship to eid-xor, and the AMR-specific frame erasure mechanism (NO_DATA=0x03).
Comprehensive documentation including: - Description of AMR serial frame format (250 words, ETSI/3GPP TS 26.073) - Algorithm: how G.192 erasure flags map to NO_DATA frame type - Command-line usage syntax - Worked example with gen-patt pipeline - Provenance (3GPP S4-120998, authors)
- src/eid/README.md: file listing entry + full usage/format/example section - doc/manual/eid.tex: new section with algorithm description (two-pass histogram + classification), input format spec, output formats, usage syntax, worked examples, and provenance
- Links softbit.c, includes ugstdemo.h and softbit.h - G.192 word mode now uses save_g192() (proper binary fwrite) - G.192 byte mode now uses save_byte() - Opens output in binary mode (WB) for G.192 formats - Uses G192_FER/G192_SYNC constants instead of ASCII tricks - Text modes unchanged (fprintf with '0'/'1') - Regenerated test references from updated tool
doc/manual/rate.tex: - Fix SHQ3 caption: 'High-quality' -> 'Super-high-quality' - Fix HP50 figure (b): '32 kHz..' -> '48 kHz.' - Fix broken LaTeX cross-references (shq-frq-1-2 -> shq2, etc.) - Add filter specs (729 coefs, -80dB for SHQ; 1119/1679 coefs for HP50) src/fir/filter.c: - Remove duplicate SHQ/HP50 entries with stray printf artifacts in comment src/fir/firflt.h: - Add missing function prototypes for shq_*_init and hp50_*_init (fixes -Wimplicit-function-declaration errors on C99+) src/fir/CMakeLists.txt: - Fix filter28: add -up flag (reference was generated with upsampling) - Fix filter28-verify: output filename test-shq2.flt (was tst-shq2.flt) - Add -equiv 1 tolerance to filter28/29 verify (matches convention) src/fir/README.md: - Add fir-wb.c entry listing SHQ and HP50 filters
Document the random tool from PR openitu#182 (3GPP S4-121078) in the unsup.tex appendix with algorithm description, usage examples, options reference, and test information.
Update sv56.tex to document: - init_speech_voltmeter now takes a 3rd parameter (bitno, range 1-32) - SVP56_state struct has new fields: thres_no, bitno - Arrays sized dynamically (up to SVP56_MAX_THRESHOLDS=31) - Demo programs accept -bits option for non-16-bit signals - Updated example code to show new API
# Conflicts: # .github/workflows/ci.yml
# Conflicts: # src/fir/CMakeLists.txt
# Conflicts: # doc/manual/eid.tex # src/eid/CMakeLists.txt # src/eid/README.md
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