Show HN: KFR 7 – major update for C++ DSP library (github.com)

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%).