Masterpiece ~ Hauptwerk Sample Pipe Organ


An open-source pipe organ sample player compatible with Hauptwerk sample sets.

masterpeice lipiny interface

bonninr.github.io/masterpiece
github.com/bonninr/masterpiece

ShinRonin ~ Modular Filter & Delay


ShinRonin is a ground-up rebuild of Ronin, one of the earliest plugins we ever shipped, first released in 2003. The original paired two delay lines with a set of morphing filters and two fully patchable routing matrices, and it earned a cult following for the strange feedback networks and self-oscillating textures you could build inside it. Twenty years on, we have rebuilt it for modern systems, kept the architecture that made it worth remembering, and released it for free.

Two independent delay lines, each with tempo sync, reverse, looping, and feedback, feed a pair of morphing multimode filters that sweep continuously from notch through lowpass, bandpass, and highpass. There is saturation, two LFOs, and an envelope follower. Everything connects through two on-board matrices: a signal matrix that routes any audio source to any destination, and a modulation matrix that wires the LFOs, envelope, and incoming MIDI to nearly any parameter. It is happy doing clean stereo delays and gentle filtering, but the real fun starts when you patch a feedback loop and let it misbehave.

shinronin user interface

www.audiodamage.com/pages/shin-ronin

OBS-vst3 ~ OBS Safe VST3 Host


Native VST3 audio effects for OBS Studio on Windows — isolated plug-in hosting, vendor GUIs, automatic discovery, state restore and dry fail-open recovery.

Why this project exists

OBS Studio’s built-in VST filter does not provide VST3 hosting. Many current studio EQs, compressors, restoration tools, reverbs, saturators, limiters and mastering processors are distributed primarily, or only, as VST3s.

OBS Safe VST3 Host adds two OBS-native workflows on Windows:

  • VST 3.x Plug-in — a simple one-effect filter for the common case.
  • VST3 Rack — a separate isolated serial multi-effect chain with a dedicated graphical Rack Editor and broadcast-oriented master console.

Third-party VST3 runtime code, vendor editors and plug-in scanning are deliberately kept outside the OBS process.

github.com/masarray/obs-vst3

cosmo-pd ~ Phase Distortion Synthesizer


A monorepo for Casio CZ-101 phase distortion synthesis — including a preset manager web/desktop app, an in-browser phase distortion synthesizer, and a VST3/CLAP/AUv2 plugin.

github.com/fpbrault/cosmo-pd

PedalBoard ~ Python Audio Library


pedalboard is a Python library for working with audio: reading, writing, rendering, adding effects, and more. It supports most popular audio file formats and a number of common audio effects out of the box, and also allows the use of VST3® and Audio Unit formats for loading third-party software instruments and effects.

Features:

  • Built-in audio I/O utilities (pedalboard.io)
    • Support for reading and writing AIFF, FLAC, MP3, OGG, and WAV files on all platforms with no dependencies
    • Additional support for reading AAC, AC3, WMA, and other formats depending on platform
    • Support for on-the-fly resampling of audio files and streams with O(1) memory usage
    • Live audio effects via AudioStream
  • Built-in support for a number of basic audio transformations, including:
    • Guitar-style effects: Chorus, Distortion, Phaser, Clipping
    • Loudness and dynamic range effects: Compressor, Gain, Limiter
    • Equalizers and filters: HighpassFilter, LadderFilter, LowpassFilter
    • Spatial effects: Convolution, Delay, Reverb
    • Pitch effects: PitchShift
    • Lossy compression: GSMFullRateCompressor, MP3Compressor
    • Quality reduction: Resample, Bitcrush
  • Supports VST3® instrument and effect plugins on macOS, Windows, and Linux (pedalboard.load_plugin)
  • Supports instrument and effect Audio Units on macOS
  • Strong thread-safety, memory usage, and speed guarantees
    • Releases Python’s Global Interpreter Lock (GIL) to allow use of multiple CPU cores
      • No need to use multiprocessing!
    • Even when only using one thread:
      • Processes audio up to 300x faster than pySoX for single transforms, and 2-5x faster than SoxBindings (via iCorv)
      • Reads audio files up to 4x faster than librosa.load (in many cases)
  • Tested compatibility with TensorFlow – can be used in tf.data pipelines!

github.com/spotify/pedalboard

Bitter ~ Bitscope & Intersample Clip Monitor


Bitter shows how many of the available bits are being used by the audio signal, reports clipping samples, and estimates when digital-to-analog conversion would cause inter-sample clips. Typical uses for a bitscope include: verifying that a render dither is working properly; verifying that a particular plugin is not reducing the signal bit depth; testing for faulty audio source data.

Features:

  • Check for Intersample Clipping that may appear during digital-to-analog conversion
  • Detailed display of the usage density of each bit
  • Reveal the bitrate of the digital signal, which may well differ from that of the file’s bitrate or your DAW’s audio engine bitrate
  • Display the audio sample rate

www.stillwellaudio.com/plugins/bitter

FerricTDS mkIII ~  Tape Dynamics Simulator


Cardinal ~ Virtual Modular Synthesizer Plugin


A fully free and self-contained modular synthesizer based on the popular VCV Rack. Available in AudioUnit/CLAP/LV2/VST2/VST3 plugin formats and as a standalone app for FreeBSD, Linux, macOS, Windows and the Web.

cardinal.kx.studio
github.com/DISTRHO/Cardinal

Filtron ~ Variable Filter


Filtron is a 12dB state variable filter that can smoothly transition between lowpass, bandpass, and highpass. It is capable of self-oscillation with resonance levels that can reach up to 11! Filtron also features a fat sounding internal saturation algorithm and a sizzly post overdrive with two modes to choose from: cold and hot.

  • 12db state variable filter
  • Transition smoothly between Lowpass, Bandpass, Highpass
  • Self-oscillating resonance
  • Fat Internal saturation
  • Post overdrive with Cold and Hot modes
  • Stereo Modulation via CV
  • Integrates with Gatekeeper
  • Optimized for audio rate modulation
  • State of the art zero delay filter design
  • Internally oversampled
  • 100% FREE

polyversemusic.com/products/filtron

Tube Preamp ~  Tube Preamp Emulation


The plugin is very unique in the sense that it gives you full control over all aspects of the modelled circuit. All values of all the capacitors, resistors etc. can be tuned by the user.

This is a free plugin. It comes in all the usual plugin formats (VST/VST3/AU/AAX), for 32 and 64 bit hosts, and for Mac Intel & Silicon.

ddmf.eu/phi-L-Audio-Tube-Preamp

BaxterEQ ~ Mastering & Mix Buss Shelving EQ


BaxterEQ – transparent mastering and mix buss shelving EQ

Finest tonal sweetening and finishing which always stays true to the source:

  • natural and accurate bass response
  • authentic analog style HF curve rendering
  • smoothest shelving operation

Perfectly suited for the mastering chain:

  • stepped controls throughout for repeatability and matched channel operation
  • full dual channel layout
  • full mid-side encoding support
  • per channel level control for easy A/B match

Artifact free technical design:

  • low ripple and distortion filter implementations
  • 64bit floating point internal processing
  • oversampled for superior impulse response

Meticulously selected frequencies:

  • Baxandall shelving filters
  • LF @ 74, 84, 98, 116, 131, 166, 230 and 361 Hz
  • HF @ 1.6, 1.8, 2.1, 2.4, 3.4, 4.8, 7.1, 11 and 18 kHz
  • 2-pole Butterworth filters
  • LC @ 12, 18, 24, 30, 36, 43 and 54 Hz
  • HC @ 7.5, 9, 11.1, 12.6, 16, 21, 28 and 40 kHz

An additional analog signal path emulation provides some subtle but precious stereo imaging improvements.

varietyofsound.wordpress.com/downloads

Benihora ~ Voice Generation Library & VST3 Plugin


Benihora is a Rust library and VST Plugin that generates voice based on a vocal tract model. This is a Rust port of Pink Trombone developed by Neil Thapen with some customizations.

github.com/carrotflakes/benihora
github.com/carrotflakes/benihora/tree/main/benihora-vst