fluidsynth 2.4.3

• It was discovered, that exclusive class note terminations were too slow (#1467, thanks to @mrbumpy409)
• Fix a regression introduced in 2.4.0 that allowed the amplitude of a voice playing in delay phase to rise infinitely (#1451)
• MSGS drum-style note-cut has been converted to an opt-in setting synth.note-cut (#1466)
• Support for SDL2 has been disabled by default* (#1472)
• Fix a regression introduced in 2.4.1 that could have caused infinite audio gain output for some MIDI files under certain configurations (#1464)
• Silence a warning issued by Systemd v254+ (#1474, thanks to @andrew-sayers)

*It was found that SDL2 hijacks fluidsynth's main() function which causes build problems on Windows, see (#1472). A PR for migrating to SDL3 is highly welcome! If you still want to compile with SDL2 support, you need to explicitly enable it using CMake flag -Denable-sdl2=1.

fluidsynth 2.4.2

• Fix audible clicks when turning off voices while using a high filter resonance (#1427)
• Fix a build failure with MSYS2 and MinGW when processing VersionResource.rc (#1448, thanks to @pedrolcl)
• Fix a crash on startup when there are no MIDI devices available on Windows (#1446, thanks to @pedrolcl)
• Restore discovery of libsndfile (#1445)
• Fix a race condition when loading SF3 files containing multiple uncompressed samples (#1457)

fluidsynth 2.4.1

• Enable libsndfile to use filename with non-ASCII characters on Windows (#1416, thanks to @pedrolcl and @stardusteyes)
• Fix a few commandline encoding related issues on Windows (#1388, #1421, thanks to @pedrolcl)
• Fix build errors on Windows (#1419, #1422, thanks to @carlo-bramini)
• Fix clicks and pops caused when changing parameters of the lowpass filter (#1415, #1417, #1424)
• Minor adjustment to AWE32 NRPN behavior (#1430)

fluidsynth 2.4.0

New Features

• Implement MSGS-style Drum Note Cut (#1199)
• Support KAI audio driver on OS/2 (#1332, thanks to @komh)
• Add support for AWE32 NRPNs (#1346)
• Add support for Polyphone's sample loop mode release (#1398, thanks to @spessasus)
• Add support for SF2.04 absolute value modulators (#1391, thanks to @spessasus)

Breaking Changes

• LASH support has been removed (#1285)

Musically Breaking changes

• The default settings for reverb and chorus have been tuned to provide a more natural perception (#1282, thanks to @es20490446e)
• The behavior of the volume envelope's delay phase was previously incorrect (#1312)
• The ModLfoToVolume generator was not able to increase the volume (#1374)
• Fluidsynth's default device-id was changed, allowing it to process (most) SysEX events without further configuration (#1382)
• Previously, some modulators were treated in a non-standard way (#1392, #1389, #1068)

Bug Fixes

• The former linear interpolation of IIR filter coefficients could have caused audible clicks and cracks (#1345) - yet there is still a potential for clicks and cracks, see #1415

fluidsynth 2.3.7

• Fix SF3 decoder producing crackling sound for loud samples (#1380)
• MIDI Format 2 is now rejected correctly since it was never supported (#1366)
• Fix UTF8 encoding issues on Windows (#1388, thanks to @stardusteyes)
• Fix a regression introduced in 2.3.2 causing fluidsynth to fail discovering Oboe (#1393)
• Other minor bugs (#1291, #1403)

fluidsynth 2.3.6

• Fix a build issue on OS/2 (#1320, thanks to @komh)
• Fix various encoding issues on Windows related to device names (#1322, thanks to @pedrolcl)
• Fix discovery of gobject by CMake
• Fix a numerical instability that caused the chorus effect to stop working correctly when fluidsynth was compiled in single precision mode (affected all precompiled binaries, #1331, thanks to @jjceresa)
• Fix timing issues in MIDI player related to incorrect handling of running status (#1351)
• Fix ignoring LSB for RPN Pitch bend range events (#1357, thanks to @spessasus)

fluidsynth 2.3.5

• Fix setting synth.chorus.speed to its minimum value being reported as out of range (#1284)
• Fix a regression causing libinstpatch and libsndfile not to be discovered on Windows (#1299)
• Fix Pipewire audio driver not cleanly being destroy (#1305, thanks to @mawe42)
• Fix selection logic for XG drum banks (#1307)
• Add cmake flag FLUID_HOST_COMPILER to allow overriding default host compiler required during compilation (#1301)
• LASH support has been deprecated (#1285)

Edit: Appended the missing precompiled binaries.

fluidsynth 2.3.4

• Fix a build failure when specifying CMAKE_INSTALL_LIBDIR as an absolute path (#1261, thanks to @OPNA2608)
• Fix some MIDI files never finish playing (#1257, thanks to @joanbm)
• Implement IPv6 to IPv4 fallback (#1208, thanks to @ivan-zaera)
• Fix a build failure when using CMake's Xcode generator (#1266, thanks to @bradhowes)
• Fix pipewire's Jack implementation not found by CMake (#1268, thanks to @pedrolcl)
• Fix a regression causing the MIDI Player to terminate prematurely (#1272, thanks to @albedozero)

fluidsynth 2.3.3

• Fix choppy sound when selecting pipewire output (#1230, thanks to @nilninull)
• Fix build issues on musl-based distros (#1229)
• Terminate MIDI player once internal synth-ticks overflow to prevent filling up the filesystem (#1233)
• Fix a bug that allowed playing notes outside of key and velocity ranges (#1250)

fluidsynth 2.3.2

• Add support for processing all SysEx messages with synth.device-id=127 (#1206, thanks to @trolley813)
• Various fixes to linking against static libfluidsynth when consumed through CMake or pkg-config (#1211, #1224, thanks to @FtZPetruska)
• Added fluid_player_get_division (#1220, thanks to @Fruchtzwerg94)
• Fix a regression introduced in 2.3.1 which broke MIDI player's seamless looping (#1227, thanks to @fabiangreffrath)