The blvco LADSPA plugin provides three anti-aliased oscillators:

1. Pulse-VCO, a dirac pulse oscillator with flat amplitude spectrum

2. Saw-VCO, a sawtooth oscillator with 1/F amplitude spectrum

3. Rec-VCO, a square / rectangle oscillator

All oscillators are low-pass filtered to provide waveforms similar to the output of analog synthesizers such as the Moog Voyager.

JamesDSP is an audio effect processor for PipeWire and PulseAudio clients, featuring:

• Automatic bass boost: Frequency-detecting bass-boost

• Automatic dynamic range compressor: automated multiband dynamic range adjusting effect

• Complex reverberation IIR network (Progenitor 2)

• Interpolated FIR equalizer with flexible bands

• Arbitrary response equalizer (also known as GraphicEQ from EqualizerAPO)

• AutoEQ database integration (requires network connection)

• Partitioned convolver (Auto segmenting convolution): Mono, stereo, full/true stereo (LL, LR, RL, RR) impulse response

• Crossfeed: Realistic surround effects

• Soundstage wideness: A multiband stereo wideness controller

• ViPER-DDC: Parametric equalization on audio and creating VDC input files

• Analog modeling: An aliasing-free even harmonic generator

• Output limiter

• Scripting engine: Live programmable DSP using the EEL2 scripting language

• Scripting IDE featuring syntax highlighting, basic code completion, dynamic code outline window, console output support and detailed error messages with inline code highlighting

This project is a rebirth of a direct integration between Bluez and ALSA. Since Bluez >= 5, the built-in integration has been removed in favor of 3rd party audio applications. From now on, Bluez acts as a middleware between an audio application, which implements Bluetooth audio profile, and a Bluetooth audio device. BlueALSA registers all known Bluetooth audio profiles in Bluez, so in theory every Bluetooth device (with audio capabilities) can be connected. In order to access the audio stream, one has to connect to the ALSA PCM device called bluealsa. The device is based on the ALSA software PCM plugin.

Control a Jack server. Allows you to plug various sources into various outputs and to start, stop and configure jackd

SoundTouch is an audio processing library for changing the tempo, pitch and playback rates of audio streams or audio files. It is intended for application developers writing sound processing tools that require tempo/pitch control functionality, or just for playing around with the sound effects.

This package provides a stereo reverb LADSPA plugin based on the well-known greverb.

This package contains the resample and windowfilter command line utilities. The resample command allows changing the sampling rate of a sound file, while the windowfilter command allows designing Finite Impulse Response (FIR) filters using the so-called window method.

Ardour is a multi-channel digital audio workstation, allowing users to record, edit, mix and master audio and MIDI projects. It is targeted at audio engineers, musicians, soundtrack editors and composers.

python-resampy implements the band-limited sinc interpolation method for sampling rate conversion as described by Julius O. Smith at the Digital Audio Resampling Home Page.

libInstPatch is a library for processing digital sample based MIDI instrument "patch" files. The types of files libInstPatch supports are used for creating instrument sounds for wavetable synthesis. libInstPatch provides an object framework (based on GObject) to load patch files, which can then be edited, converted, compressed and saved.

python-pysox is a wrapper around the sox command line tool. The API offers Transformer and Combiner classes that allow the user to incrementally build up effects and audio manipulations. python-pysox also provides methods for querying audio information such as sample rate, determining whether an audio file is silent, and much more.

LV2 port of CAPS, a collection of audio plugins comprising basic virtual guitar amplification and a small range of classic effects, signal processors and generators of mostly elementary and occasionally exotic nature.

The SoX Resampler library (libsoxr) performs one-dimensional sample-rate conversion. It may be used, for example, to resample PCM-encoded audio.

DRC is a program used to generate correction filters for acoustic compensation of HiFi and audio systems in general, including listening room compensation. DRC generates just the FIR correction filters, which can be used with a real time or offline convolver to provide real time or offline correction. DRC doesn't provide convolution features, and provides only some simplified, although really accurate, measuring tools.

shntool is a multi-purpose WAVE data processing and reporting utility. File formats are abstracted from its core, so it can process any file that contains WAVE data, compressed or not---provided there exists a format module to handle that particular file type. It can also generate CUE files, and use them split WAVE data into multiple files.

Python-SoXR is a Python wrapper of libsoxr, a high quality, one-dimensional sample-rate conversion library.

Libzita-resampler is a C++ library for resampling audio signals. It is designed to be used within a real-time processing context, to be fast, and to provide high-quality sample rate conversion.

JackTrip is a multi-machine audio system used for network music performance over the Internet. It supports any number of channels (as many as the computer/network can handle) of bidirectional, high quality, uncompressed audio signal streaming.

Faust is a programming language for realtime audio signal processing.

This package provides a JACK Audio Connection Kit (JACK) client for Python. This variant uses the compatibility JACK implementation provided by Pipewire.

libmt32emu is a C/C++ library which approximately emulates the Roland MT-32, CM-32L and LAPC-I synthesizer modules. It is part of the Munt project.

The LV2 Toolkit (LVTK) contains libraries that wrap the LV2 C API and extensions into easy to use C++ classes. It is the successor of lv2-c++-tools.

This package provides various LADSPA plugins. cs_chorus and cs_phaser provide chorus and phaser effects, respectively; mvclpf24 provides four implementations of the low-pass filter used in vintage Moog synthesizers; mvchpf24 is based on the voltage-controlled high-pass filter by Robert Moog. The filters attempt to accurately emulate the non-linear circuit elements of their original analog counterparts.

This package provides python bindings for libsndfile based on CFFI and NumPy.