Linux Studio Plugins Project / News: Recent posts

• Changed the binary distribution of plugins. Plugins of different formats are now packed together into a 7-zip archive. The same is related to documentation and source code. This allows to gain the economy on the overall size of the compressed data and number of archives required to download.
• Added basic GStreamer plugin format support.
• Plugins now can be built without UI support if the 'ui' option is omitted at the configuration stage.
• Added ISO-226:2023 loudness compensation curves to Loudness Compensator plugin series.
• Added balance knobs to LSP Slap-back Delay Stereo plugin.
• Added Suntory Hall Tokyo 3D model to Room Builder presets (contributed by Fowly).
• Updated makefile scripts related to Git checkout (contributed by Johannes Lorenz).
• Improved build tools: UI resources are now built-in only for shared objects/libraries that actually need them.
• Several AVX-512 optimizations of DSP library.
• Fixed not working MIDI channel setup for the Trigger MIDI plugin series.
• Fixed regression: improper port bindings for Compensation Delay x2 Stereo plugin.
• Fixed several issues related to plugin window sizing for LV2 format.
• Fixed possible access to uninitialized memory when loading built-in resources.
• Fixed improper phase compensation between Dry and Wet channels in Linear Phase mode for multiband plugin series:
• Multiband Compressor;
• Multiband Dynamics Processor;
• Multiband Expander;
• Multiband Gate.
• Several bugfixes for VST3 wrapper.

• Implemented Chorus plugin series.
• Implemented advanced internal buffer cleanup algorithm that does not cause high CPU load for Slap-Back Delay plugin.
• Added stereo correlometer to the Spectrum Analyzer plugin series.
• Added feedback to the Slap-Back delay plugin.
• Implemented Dry/Wet balance knob for the following plugin series: Artistic Delay; Beat Breather; Compensation Delay; Flanger; Impulse Responses; Impulse Reverb; Room Builder; Sampler; Multisampler; Slap-Back delay.
• Removed 'Amount' knob in Flanger plugin series as it can be fully replaced by Dry/Wet/DryWet knobs.
• Several fixes related to window position of VST3 plugin format.
• Workaround for Bitwig Studio DAW memory leak when VST3 plugins extensively use messaging.
• Fixed bug related to improper loading of RIFF files with 32-bit float sample format.
• Fixed configuration export for LV2 format where plugins exported paths mapped by a DAW instead of real file paths.
• Fixed improper numpad key handling in UI for Windows.
• Fixed Artistic Delay which could generate audio garbage on session startup.
• Improved precision of bilinear transform for filters which could blow up signal when using steep-curved filters.
• Fixed jumping UI controls issues caused by variable widths of diffrent parameters.... read more

• Added experimental VST3 plugin format support.
• Added built-in presets for Compressor plugin series.
• Fixed bug in smoothing mode of Parametric Equalizer and Filter plugins that could be caused when using large buffer sizes. Additional optimizations to reduce CPU resources when processing in smoothing mode.
• Updated behaviour of band frequency splits in the UI for Multiband Compressor, Multiband Expander, Multiband Gate Multiband Dynamic Processor and Crossover plugin series.
• Several bugfixes and improvements in implementations of VST2, LV2 and CLAP formats.
• Added possibility to manually enter channel name in Mixer plugin series.
• Added MIDI velocity control code display in Sampler and Multisampler plugin series.
• Added support of LR2 (12 dB/oct) filters by the Crossover plugins series.
• Added S/M Apply switch to Crossover plugin series that applies effect of Solo/Mute buttons to corresponding frequency band's outputs.
• Improved grid color and visibility for the Spectrum analyzer plugin series in Spectralizer mode.
• Implemented Hold option for Compressor, Dynamics Processor, Expander and Gate plugin series.
• Implemented Hold option for Multiband Compressor, Dynamics Processor, Expander and Gate plugin series.
• Added Dry/Wet balance control for Compressor, Dynamics Processor, Expander, Gate and Trigger plugin series.
• Added Dry/Wet balance control for Multiband Compressor, Dynamics Processor, Expander, Gate and GOTT Compressor plugin series.
• Fixed phasing issue between dry and wet signal for GOTT Compressor in Linear Phase mode.
• Fixed invalid curve markers display in Multiband Gate plugin series.
• Re-implemented allpass filters for Equalizer that could yield to high frequency pitch buildup.
• Updated split editing behaviour for Multiband plugin series and Crossover plugin series.
• Added basic UI design guidelines to the documentation.
• Several bugfixes in graphic toolkit library.

LSP Plugins celebrates the 8th anniversary and introduces the 1.2.14 release!

• Implemented Clipper plugins series.
• Implemented Multiband Clipper plugin series.
• Implemented Parametric Equalizer x8 plugin series.
• Updated VST 2.x plugin naming to fit the maximum possible length of 31 characters.
• Added tracking of maximum values option for Spectrum Analyzer plugin series.
• Added possibility to change frequency values by double click for GOTT Compressor.
• Improved performance of expression language in the UI.
• Implemented separate input and output signal spectrum analysis for Filter, Graphic Equalizer and Parametric Equalizer plugin series.
• Updated default value and extended range of the zoom fader for Filter, Graphic Equalizer and Parametric Equalizer plugin series.
• Added possibility to globally adjust filter point size for Filter, Graphic Equalizer and Parametric Equalizer plugin series.
• Added gain level display for filter info of the Parametric Equalizer and Filter plugin series.
• Added missing inline display to the Autogain plugin series.
• Threshold markers are now editable for all dynamics and multiband dynamics plugins.
• Implemented switch that controls automatic scaling of spectrum graph for plugin series:
• Beat Breather.
• Filter.
• GOTT Compressor.
• Graphic Equalizer.
• Multiband Compressor.
• Multiband Dynamic Processor.
• Multiband Gate.
• Multiband Expander.
• Multiband Limiter.
• Noise Generator.
• Parametric Equalizer.
• Many code updates that could cause potential problems related to using another decimal point for floating-point number formatting.
• Added frequency and note displaying for band splits for all multiband plugin series.
• Added support of storing current file type selection in file dialogs of UI.
• Optimization of compressor and gate functions using AVX-512 instruction set.
• Fixed bug in Mid/Side conversion functions for AArch64 architecture (contributed by marcan at GitHub).
• Introduced SIMD-optimized expander curve and gain functions.
• Improved performance of logarithmic values calculations for DSP modules.

LSP Plugins 1.2.13 released with bugfixes and improvements!

• Fixed bug in Multiband Limiter plugin series caused by invalid processing of large input buffers.
• Fixed bug in Compensation Delay plugin series caused by invalid processing of large input buffers.
• Fixed crackling sound caused by small buffer gaps in Autogain plugin series.
• Fixed bug introduced in 1.2.11 version related to improper optimized function for AVX-512 instruction set that could cause dynamic processing plugins (like Compressor, Expander, Gate, etc) work improperly.
• Several optimizations of DSP library with AVX and AVX2 instruction sets.
• Many additional optimizations of DSP library with AVX-512 instruction set.
• Optimizations of compressor, expander and gate modules with SIMD instructions.
• Gate module now uses lsp-dsp-lib for low-level gain and curve optimizations.
• Reduced the gain curve refresh rate for all multiband plugins which may reduce CPU usage for small input buffer sizes.
• Optimized common gain curve calculation for all multiband plugins.

• Implemented Autogain plugin series for controlling the loudness of the signal according to the ITU-R BS.1770-4 specificaions.
• Implemented SIMD-optimized curve and gain calculation functions for compressors which allow to lower the CPU consumption by compressor plugins.
• More AVX-512 optimized functions added to the low-level DSP code.
• Additional SIMD-optimized functions added to DSP library.
• Fixed VST2 plugin crash on UI close in OBS Studio.
• Fixed invalid default values of parameters for CLAP plugin format.
• Fixed double memory free of generated port metadata in CLAP, VST2 and LV2 wrappers.
• Fixed HPF/LPF knob activity in the UI for multiband dynamics plugins.

If you are regularly observing the evolution of LSP Project, you probably already noticed that LSP Plugins are moving towards Windows support.

Despite we're not planning to distribute them for free for Windows platform while keeping Linux and FreeBSD builds free.

The main reason is, if people use proprietary solutions, then it is pretty fair to ask money for the job that developers of LSP project already did for almost 8 years of the project activity.... read more

• Added partial support of AVX-512 instruction set.
• Windows support changed to experimental.
• Fixed code issues reported by the PVS Studio static analyzer.
• Fixed improper band characteristics drawn on band Mute for multiband plugins in Linear Phase mode.

• Implemented Beat Breather plugin series.
• Added phase switches to Delay Compensator plugin series.
• Implemented Stereo Split mode for stereo version of all dynamic plugins:
• Compressor and Multiband Compressor;
• Dynamics Processor and Multiband Dynamics Processor;
• Expander and Multiband Expander;
• Gate and Multiband Gate;
• GOTT Compressor.
• Added Allpass filter to the Filter plugin series.
• Added Bandpass, Ladder-pass and Ladder-rej filters to Parametric Equalizer plugin series.
• Introduced Linear Phase mode for the Crossover plugin series.
• Introduced Linear Phase mode for multiband plugin series:
• GOTT Compressor;
• Multiband Compressor;
• Multiband Dynamics Processor;
• Multiband Expander;
• Multiband Gate;
• Multiband Limiter.
• Fixed missing inline display for Phase Detector plugin.
• Fixed invalid input signal level metering for Flanger plugin series.
• Fixed frequency inspection bug for LeftRight and MidSide versions of Parametric Equalizer plugin series.
• Fixed improper latency value report by Multiband Limiter plugin series.

This is a pretty hard release because we introduce four new plugin series!

• Implemented GOTT (Grand Over-The-Top) Compressor plugin series.
• Implemented Filter plugin series.
• Implemented Flanger plugin series.
• Implemented Multiband Limiter plugin series.
• Implemented high-precision oversampling algorithms for Oscilloscope plugin series.
• Updated default values for file selectors in Impulse Responses and Impulse Reverb plugin series.
• Added generation of explicit element definitions for LV2 groups in TTL files as a workaround to LV2 problem related to missing predefined port groups' elements.
• Added 'All' channel selector to Sampler and Multisampler plugin series which is now the default value for channel selector.
• Added missing audio preview for single-channel Sampler Plugin series.
• Adding missing output balance knobs in Impulse Reverb Mono plugin.
• Fixed improper behaviour of the bypass switch for Multiband Compressor, Expander and Dynamics Processor plugin series.
• Fixed bug in the font manager which could yield memory corrption after complete font manager cleanup (reproducible when switching visual schemas).
• Fixed memory leakage in the UI (not freed resources on UI close).
• Fixed bug in ALR function for Limiter plugin series which could cause random audio scratches.
• Fixed gain jumping bug in A/B tester plugin.
• Serveral bugfixes in the core DSP modules provided by the lsp-dsp-units library.

LSP Plugins 1.2.7 released!

• Fixed CLAP UI support for Bitwig Studio.
• Fixed build that disabled CairoCanvas for Inline Display feature.
• Fixed memory leakage issued by the libcairo font cache on the plugin UI close.
  Moved custom font rendering solution to direct usage of libfreetype.
• Fixed crash (BadMatch) for Fluxbox window manager on popup windows.
• Fixed popup window heading display in Fluxbox.
• Fixed non-working solo button for Parametric Equalizer after 1.2.6 release.
• Removed Makefile.d. Dependencies are now automatically generated at the build stage.
• Added possibility to invert the behaviour of mouse scroll for all widgets or
  for graph dot widget.
• Added frequency display and gain for each filter of Graphic Equalizer plugin series.
• Added measure button and meter line on graph for Spectrum Analyzer plugin series.
• Added display of filter number, filer channel and filter type near to the
  frequency and note.
• Added possibility to change the thickness of lies on the spectrum graph for the
  Spectrum Analyzer plugin series.
• Some output parameters like Latency are not exported into configuration file anymore.

We're glad to introduce the new version 1.2.6 of LSP Plugins!

• Implemented Mixer plugin series for 4, 8 and 16 Mono/Stereo channels.
• Implemented A/B Tester plugin series with blind option.
• Parametric Equalizer is now smoothly operating with frequency/gain/q factor for each
  mode: FIR, IIR, FFT, SPM.
• Added popup menu for more precise control over the equalizer dot on the graph for
  Parametric Equalizer.
• Added frequency and note displaying (with detune in cents) over the currently
  configured filter in the Parametric Equalizer.
• Implemented automatic and manual inspect mode for filters in Parametric Equalizer.
• Implemented more user-friendly inspecting slider to the Spectrum Analyzer plugin series:
  frequency value, amplitude and note (with detune in cents) are displayed now near the
  slider which can be adjusted with mouse movements.
• Added basic SFZ import support by the Multisampler plugin series.
• Added shared objects related to 3D rendering to LV2, VST and CLAP packages.
• Fixed buggy tether for the parameter popup window.
• Fixed improper data stream synchronization using LV2:Atom protocol.
• Implemented linear ramping lramp_* functions in the lsp-dsp-lib optimized for
  i686, x86_64, ARM32 and AArch64 architectures.
• Fixed avx::dyn_biquad_process_x8_fma3 function implementation which could cause
  some data distortion in the output buffer.
• Fixed plugin state out of sync for CLAP plugin format on state restore in REAPER.
• Several bugfixes in UI libraries.
• Better support for build under different ARM architectures.
• The Windows support status has been changed to 'Compiles'.
• The AArch64 support status has been changed to 'Full'.... read more

LSP Plugins 1.2.5 released.

• Introduced CLAP plugin format support.
• Introduced the 'Override Hydrogen drumkit' feature for Multisampler plugin series.
• Reworked and simplified the behaviour of the parameters that define 'Stretch' and
  'Loop' ranges.
• Minimum and maximum values now depend on the sample length for several parameters
  like 'Stretch', 'Loop', 'Fade in' and 'Fade out' in the Sampler and Multisampler
  plugin series.
• Fixed the application menu spam in GNOME environment by reworking the XDG files
  (contributed by sdwolfz).
• Changed VST parameter normalized value mapping for logarithmic parameters.
• Added possibility to specify JACK connections that should be estimated by the
  standalone JACK plugin when the plugin connects to the JACK server.
• Implemented plugin metadata validator which runs at the build stage and verifies
  the consistency of the plugin metadata.
• Fixed bug related to modification of cyclic parameters for several plugin formats.
• Fixed possible crash when importing configuration data from clipboard.
• Added possibility to enable/disable Knob's scale actions.
• Several bugfixes related to the memory access in the lsp-ws-lib.... read more

The anniversary release 1.2.4 of LSP Plugins is ready.

• Implemented Noise Generator plugin series.
• Added 'Stretch' and 'Compensate' functions to the sampler plugin (contributed by Vitalius Kuchalskis).
• Added support of 'Loop' feature by the Sampler plugin series.
• Added audio sample preview feature in the file open dialog for Sampler, Trigger, Impulse Responses and Impulse Reverb plugin series.
• Extended LSPC (LSP Chunk) file format to support additional types of chunks.
• Added possibility to export Sampler configuration as a single bundle with the configuration and audio files packaged together into the LSPC file format.
• Fixed broken configuration save and load operations with relative file paths.
• Added 'Min' and 'Max' sidechain sources for single-band and multiband dynamic processing plugins: Compressor, Dynamic Processor, Expander, Gate.
• Added possibility to add several filters by performing mouse double click on the graph area for the Parametric Equalizer plugin series.
• Added several built-in presets for the Parametric Equalizer plugin series (contributed by Largos @ linuxmusicians).
• Fixed performance regression of the UI.
• Significant optimizations of CPU consumption by the dspu::Limiter module.
• Introduced tab control for the lsp-tk lib and lsp-plugin-fw.
• Raised the maximum supported sample rate from 192 kHz to 384 kHz.
• Several bug fixes in lsp-dsp-units library.
• Several bug fixes in lsp-runtime-lib library.
• Several bug fixes in lsp-plugin-fw library.
• Several bug fixes in lsp-tk-lib library.
• Fixed 32-bit ARM architecture detection under 64-bit CPU in makefiles.

LSP Plugins 1.2.3 released!

• Graphic Toolkit Library lsp-tk-lib has been ported to Windows.
• Updated compressor plugin bundles: added negative boosting gain option in 'Boosting' mode.
• Updated gate plugin bundles: added negative gain option for ducking gateway option.
• Assigned more correct names for sidechain types of dynamic processing plugins.
• Introduced several workarounds for the support of UI by the OBS host.
• Fixed build of i386 DSP code under FreeBSD with Clang compiler.
• Better support of building code for ARMv6, ARMv7 and AArch64 under FreeBSD with Clang compiler.
• Added basic CI tests introduced by GitHub CI.
• Several bugfixes in core libraries.

LSP Plugins 1.2.2 Released!

• Implemented Multiband Dynamic Processor plugin series.
• Changed donation methods.
• Added german translations (contributed by Johannes Guenther).
• Added pitch control for the sample in the Sampler and Multisampler plugin series
  (contributed by Vitalius Kuchalskis).
• Added pitch control for the sample in the Trigger plugin series.
• Fixed plugin version tracking which didn't save the updated version
  to the configuration file.
• Fixed improper configuration file import in JACK headless mode.
• Fixed segmentation fault error in JACK headless mode when JACK connection was lost.
• Added window scaling button function for plugin window.

Release 1.2.0.

• Decomposition of core modules into submodules.
• Implemented multiple visual themes for the plugins.
• Added possibility to change visual themes in runtime.
• Added headless support for JACK plugins.
• Fixed delay compensation issue for Dry/Wet balance for single-banded dynamic plugin series
  (Compressor/Gate/Expander/Dynamic Processor).
• Add support of LV2UI:scaleFactor extension - https://github.com/drobilla/lv2/pull/38/commits
• Implemented 'Reset to default' button.
• Added support of building under LoongArch32 and LoongArch64 architectures.
• Added support of building under 32-bit and 64-bit RISC-V architectures.

This is traditional release up to the anniversary of LSP Plugins.
There are no huge differences in the source code tree and the release consists mostly of user contributions.
But the primary goal is that the 1.1.x development branch becomes frozen until the upcoming 1.2.0 release will be ready.
The set of changes is the following:

• Fixed X11 error handling routine that could crash under certain conditions.
• Better support for musl libc (contributed by Artur Sinila).
• Added support of VERBOSE parameter for build system (contributed by Artur Sinila).
• Fixed possible system crash in profiler plugin.
• Updated LV2 TTL generator, now instrument plugins are better compatible with Ardour DAW.
• Updated french translation (contributed by wargreen at Github and Olivier Humbert).
• Migrated hyperlinks from HTTP to HTTPS protocol (contributed by Bruno Vernay).
• Added support of build for 32-bit and 64-bit RISC-V architecture (contributed by Xeonacid at GitHub).
• Fixed window issue for the Fluxbox window manager.
• Fixed build for ARMv8 architecture (contributed by Marek Szuba).

• Implemented Oscilloscope plugin series: x1, x2 and x4. UX design by Boris Gotsulenko.
• Added data streaming port support to plugin framework.
• Added strobe feature to mesh primitives that allows to draw
  multiple streamed meshes together.
• Implemented 4-lobe Lanczos oversampling DSP functions for i586 architecture.
• Implemented 4-lobe Lanczos oversampling DSP functions for x86_64 architecture.
• Implemented 4-lobe Lanczos oversampling DSP functions for 32-bit ARM architecture.
• Implemented 4-lobe Lanczos oversampling DSP functions for 64-bit ARM architecture.
• Minor bugfixes in the core library.
• Fixed bug with character set encoding for several systems with limited iconv.
• Fixed latency compensation issue that happened for the 'Bypass' switch/automation.
• Implemented additional 'Boosting' mode for the single-band compressor plugin series.
• Implemented additional 'Boosting' mode for the multiband-band compressor plugin series.
• Updated french translations (contributed by Olivier Humbert).
• Updated italian translations by Stefano Tronci.
• Desktop icon installation moved to a separate 'install_xdg' icon to prevent LSP
  icon flooding for several systems which don't support XDG standard.

• Fixed latency computation error for FIR and FFT modes of the filter.
• Optimize FIR and FFT equalizers to use fastconv_ routines instead of FFT.
• Implemented SPM mode for Parameteric and Graphic Equalizer plugin series.
• Fixed improper VST call handling for several calls.
• Several typo fixes in documentation (contributed by Olivier Humbert).
• Fixed improper output MIDI event sorting for all plugins.
• Channels of spectrum analyzer are now synchronized.
• Fixed regression related to loading built-in file resources.
• Added extra button to hide/show equalizer section for Impulse Responses and Impulse Reverb
  plugin series.
• Updated OBJ file parsing for support less strict file format.
• Fixed improper behaviour of File Open Dialog widget related to file name input.
• Art Delay plugin settings changed: by default multipliers are now set to 1, BPM multiplier allows now
  to step with 0.5 values allowing to set dotted notes.

LSP Plugins 1.1.28 available!

Today we celebrate 5 year since the 1.0.0 release. That's hard to imagine but the huge amount of work has been done.

For these 5 years LSP Plugins became one of the top audio plugins used in Linux music production. Among this period new requirements came to the project and we tried to fulfill them all while caring for the quality, stability and performance of the software.... read more

New version of LSP Plugins 1.1.26 is available!

• Implemented Crossover Plugin series.
• Fixed phase mismatch between channels in the oversampling mode of limiter (contributed by Hector Martin).
• Fixed bug in convolver module which could perform improper tail convolution (reported by Robin Gareus).
• Affected plugins: Impulse Responses, Impulse Reverb, Room Builder.
• Fixed small memory leakage in multiband plugins (Compressor, Gate, Expander) related to usage of
• Inline Display feature.
• Added support of pg:mainInput and pg:mainOutput LV2 properties in TTL files for all plugins.
• Updated all C++ heades and source files to match the LGPL3+ license headers.... read more

New release of LSP Plugins is available with the following changes:

• Implemented Loudness Compensator plugin series (Mono and Stereo).
• Implemented Surge Filter plugin series (Mono and Stereo) for protecting audio chain from possible pops on playback start/stop events.
• Significant changes the Limiter Plugin series, may be partially incompatible with hosts/wrappers:
• Removed 'Classic' and 'Mixed' modes since these modes do not give effective results.
• Introduced Automatic Level Regulation (ALR) feature enabled by default.
• Added possibility to dump internal state of plugin to file.
• Several plugins now support dumping of internal state.
• Added support of loading Hydrogen drumkits by the Multisampler plugin series.
• Added 'Squared Cosine' and 'Cubic Hermite Spline' windows to Spectrum Analyzer.
• Fixed bug that caused Spectrum Analyzer to ignore window selection.
• Fixed bug in AVX-optimized sidechaining funcion that could cause invalid behaviour of plugins that use external/internal sidechain for processing.
• Implemented back-buffering of the window surface, all UI controls now don't glitch on edit.
• Refactored and simplified LV2 parameter transport between UI and plugin code.
• VST plugins now provide possibility to save and load presets and do not crash Host.
• Added support of lv2:StateChanged extension which properly works with Ardour 6.0.145 and higher.
• Fixed improper behaviour of VST controls under REAPER host (and possible other VST hosts).
• Updated metadata for dynamic processors to better match the UI.
• Now all lv2:Atom ports that do not provide MIDI message transfer are marked as lv2:connectionOptional.
• Exported plugin configuration now contains information about original package version.

• Implemented Multiband Gate plugin series.
• Added sidechain low-pass and high-pass filters for Compressor plugin series.
• Added sidechain low-pass and high-pass filters for Expander plugin series.
• Added sidechain low-pass and high-pass filters for Gate plugin series.
• Added sidechain low-pass and high-pass filters for Dynamic Processor plugin series.
• Added sidechain low-pass and high-pass filters for Trigger plugin series.
• Fixed VST2 identifiers for Multiband Expander plugin series.
• Fixed graph issues related to dot editing.
• Added spanish translation of the UI (contributed by Ignotus - ignotus666 at github.com).
• Compressor, Expander, Gate and Dynamic Processor plugins now report latency for the lookahead knob.
• Fixed mapping of some numpad keys that could cause problems when entering manual value in the UI.
• VERSION build variable replaced with LSP_VERSION build variable (contributed by Bruno Vernay).

LSP Plugins are currently moving towards 1.2.0 release but that requires huge core updates which are now in progress. This is basically set of minor fixes to the current source tree.

• Fixed UI synchronization issue on plugin state restore for VST plugin format.
• Fixed improper work of default Attack and Release time parameters for
  Dynamic Processor plugin series.
• Fixed build broken by recent LV2 header updates.
• Some french translation fixes (contributed by Olivier Humbert).