v0.1.0

Release notes: v0.1.0

v0.1.0 is the first portfolio-oriented release candidate of cpp-dsp-showcase.

The goal of this release is to demonstrate a compact but professional DSP C++ codebase: deterministic algorithms, tests, benchmark tooling, CMake packaging and documentation that connects software behavior to SDR/FPGA engineering practice.

What is included

Area	Release content
FIR filtering	Windowed-sinc low-pass design, direct convolution and FFT overlap-save path
Tone detection	Goertzel power estimation for single and batched frequencies
Delay estimation	GCC-PHAT integer-delay baseline
Resampling	Rational L/M resampler with anti-alias filtering
Performance	Benchmark executable and markdown report generation
Packaging	CMake install/export flow and downstream find_package use case
Documentation	Verification, benchmark, evidence matrix and FPGA mapping notes

Reviewer checklist

A reviewer should be able to verify the release with the following path:

cmake -S . -B build -DBUILD_TESTING=ON -DDSP_ENABLE_AVX2=ON -DCMAKE_BUILD_TYPE=Release
cmake --build build --config Release
ctest --test-dir build --build-config Release --output-on-failure
cmake --build build --config Release --target benchmark_report

Expected evidence:

• CTest passes for deterministic DSP behavior.
• Benchmark report is regenerated from source tooling.
• README commands match the actual build flow.
• CI is green on Linux and Windows before tagging the final release.

Engineering value

This release is intentionally small. Its value is not the number of algorithms, but the engineering discipline around them:

• predictable public API surface;
• deterministic tests;
• reproducible benchmark artifacts;
• clear CMake packaging;
• documentation that explains algorithm evidence and future FPGA mapping.

Known limitations

• The project is a showcase/reference, not a general-purpose DSP framework.
• AVX2 support is optional and should not be treated as a required platform feature.
• FPGA notes are design guidance; RTL implementation and synthesis reports are future work.

Suggested tag message

v0.1.0: initial C++ DSP showcase release

Includes FIR, Goertzel, GCC-PHAT, rational resampling, tests,
benchmark tooling, CMake packaging and reviewer documentation.