Life & fun · November 17, 2025
KFR 7 – major update for C++ DSP library
Key additions: RVV SIMD support for RISC-V devices. Elliptic IIR filter design and zero-phase IIR filtering via filtfilt. Audio reading/writing completely reworked and now supports WAV, W64, RF64/BW64, AIFF, FLAC, CAF, ALAC, MP3, and raw formats. New high-level Audio module for multichannel processing. There are also performance improvements since KFR6 for DFT (up to 40% on ARM) and matrix transpose (up to 30%).
KFR 7 – major update for C++ DSP library launched on November 17, 2025 with 6 votes, #2,995 of 9,795 launches that month and more than 75% of that year's launches.
What it does
Fast, modern C++ DSP framework, FFT, Sample Rate Conversion, FIR/IIR/Biquad Filters (SSE, AVX, AVX-512, ARM NEON, RISC-V RVV) - Release KFR 7.0.1 · kfrlib/kfr
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