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Csound is a user-programmable and user-extensible sound processing language and software synthesizer.
LV2 is an open specification for audio plugins and host applications. At its core, LV2 is a simple stable interface, accompanied by extensions which add functionality to support the needs of increasingly powerful audio software.
alsa-midi-latency-test measures the roundtrip time of a MIDI message in the alsa subsystem of the Linux kernel using a high precision timer. It calculates the worst case roundtrip time of all sent MIDI messages and displays a histogram of the roundtrip time jitter.
FAudio is an XAudio reimplementation that focuses solely on developing fully accurate DirectX Audio runtime libraries.
The Portable C Audio Library (pcaudiolib) provides a C API to different audio devices such as ALSA or PulseAudio.
FDK is a library for encoding and decoding Advanced Audio Coding (AAC) format audio, developed by Fraunhofer IIS, and included as part of Android. It supports several Audio Object Types including MPEG-2 and MPEG-4 AAC LC, HE-AAC (AAC LC + SBR), HE-AACv2 (LC + SBR + PS) as well AAC-LD (low delay) and AAC-ELD (enhanced low delay) for real-time communication. The encoding library supports sample rates up to 96 kHz and up to eight channels (7.1 surround).
Omins-lv2 is a small collection of LV2 audio plugins for modular synthesis.
The mbelib library provides support for the 7200x4400 bit/s codec used in P25 Phase 1, the 7100x4400 bit/s codec used in ProVoice and the Half Rate 3600x2250 bit/s vocoder used in various radio systems.
DarkIce is a live audio streamer. It takes audio input from a sound card, encodes it into Ogg Vorbis and/or mp3, and sends the audio stream to one or more IceCast and/or ShoutCast servers.
LibOFA is an audio fingerprint library, created and provided by MusicIP.
dsp is an audio processing program with an interactive mode.
r128gain is a multi platform command line tool to scan your audio files and tag them with loudness metadata (ReplayGain v2 or Opus R128 gain format), to allow playback of several tracks or albums at a similar loudness level. r128gain can also be used as a Python module from other Python projects to scan and/or tag audio files.
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 a LADSPA plugin for a four-band parametric equalizer. Each section has an active/bypass switch, frequency, bandwidth and gain controls. There is also a global bypass switch and gain control.
The 2nd order resonant filters are implemented using a Mitra-Regalia style lattice filter, which is stable even while parameters are being changed.
All switches and controls are internally smoothed, so they can be used live without any clicks or zipper noises. This makes this plugin suitable for use in systems that allow automation of plugin control ports, such as Ardour, or for stage use.
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.
This package provides pythonic libsndfile wrapper to read and write audio files.
clalsadrv is a C++ wrapper around the ALSA API simplifying access to ALSA PCM devices.
FreePats is a project to create a free (as in free software) collection of digital instruments for music production. This sound bank is a partial release of the General MIDI sound set.
This package provides Steve Harris's LADSPA plugins.
libkeyfinder is a small C++11 library for estimating the musical key of digital audio.
fmsynth is an LV2 plugin which implements an FM (Frequency Modulation) synthesizer. Unlike most FM synth implementations in software, this FM synthesizer does not aim to emulate or replicate a particular synth (like DX7) or FM chip.
Zita convolver is a C++ library providing a real-time convolution engine.
RtMidi is a set of C++ classes (RtMidiIn, RtMidiOut, and API specific classes) that provide a common cross-platform API for realtime MIDI input/output.
Noise Repellent is an LV2 plugin to reduce noise. It has the following features:
Spectral gating and spectral subtraction suppression rule
Adaptive and manual noise thresholds estimation
Adjustable noise floor
Adjustable offset of thresholds to perform over-subtraction
Time smoothing and a masking estimation to reduce artifacts
Basic onset detector to avoid transients suppression
Whitening of the noise floor to mask artifacts and to recover higher frequencies
Option to listen to the residual signal
Soft bypass
Noise profile saved with the session