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Top 23 C++ Dsp Projects
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essentia
C++ library for audio and music analysis, description and synthesis, including Python bindings
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Faust was the closest call. It's a DSP language that compiles to C++ (or wasm, or LLVM), elegant, fast, and has reasonable live-coding paths via the faust2* scripts. The catch is its library catalog. Pure Data has decades of community-built abstractions for the kind of instrument-flavored building blocks this piece leans on. Faust has fewer of these prebuilt. The choice came down to "find or build what I need in Faust" vs "wire up things that already exist in Pd." Pd won.
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kfr
Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV)
Project mention: Show HN: KFR 7 – major update for C++ DSP library | news.ycombinator.com | 2025-11-17 -
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r8brain-free-src
High-quality pro audio resampler / sample rate conversion header-only C++ library. Very fast, for both audio resampling and time-series interpolation.
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Project mention: NFC-laboratory: NFC signal and protocol analyzer using SDR receiver | news.ycombinator.com | 2025-10-09
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RenderMan
Command line C++ and Python VSTi Host library with MFCC, FFT, RMS and audio extraction and .wav writing.
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squares-and-circles
squares-and-circles is an alternate firmware for the Eurorack module O_C, targeting Teensy 4.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ Dsp discussion
C++ Dsp related posts
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Faust Programming Language
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NFC-laboratory: NFC signal and protocol analyzer using SDR receiver
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Chatassembler is a RISC-V assembler that's over 10 times faster
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My Sixth Year as a Bootstrapped Founder
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Welcome to the Chata Programming Language
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Faust: A functional programming language for audio synthesis and processing
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Live + Python = ❤️
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A note from our sponsor - SaaSHub
www.saashub.com | 14 Jun 2026
Index
What are some of the best open-source Dsp projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | gnuradio | 6,119 |
| 2 | essentia | 3,586 |
| 3 | faust | 3,066 |
| 4 | inspectrum | 2,462 |
| 5 | kfr | 1,883 |
| 6 | SOUL | 1,735 |
| 7 | q | 1,393 |
| 8 | roc-toolkit | 1,236 |
| 9 | DaisySP | 1,164 |
| 10 | dragonfly-reverb | 1,108 |
| 11 | audiogridder | 863 |
| 12 | r8brain-free-src | 704 |
| 13 | DelugeFirmware | 661 |
| 14 | nfc-laboratory | 545 |
| 15 | amsynth | 497 |
| 16 | RenderMan | 398 |
| 17 | SPTK | 245 |
| 18 | snestracker | 232 |
| 19 | squares-and-circles | 199 |
| 20 | cordic | 123 |
| 21 | yummyDSP | 121 |
| 22 | Chata | 112 |
| 23 | cornrow | 109 |
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