C Sound/Audio Software

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Browse free open source C Sound/Audio Software and projects below. Use the toggles on the left to filter open source C Sound/Audio Software by OS, license, language, programming language, and project status.

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  • 1
    Matroska is an open standard audio/video container format. Visit our homepage at http://www.matroska.org
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    5.0 out of 5 stars 17 Reviews
    Downloads: 13,932 This Week
    Last Update:
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  • 2

    opencore-amr

    Audio codecs extracted from Android Open Source Project

    Library of OpenCORE Framework implementation of Adaptive Multi Rate Narrowband and Wideband (AMR-NB and AMR-WB) speech codec. Library of VisualOn implementation of Adaptive Multi Rate Wideband (AMR-WB) encoder and Advanced Audio Coding (AAC) encoder. Modified library of Fraunhofer AAC decoder and encoder.
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    5.0 out of 5 stars 19 Reviews
    Downloads: 13,217 This Week
    Last Update:
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  • 3
    mpg123
    This is the fast and Free (LGPL license) real time MPEG Audio Layer 1, 2 and 3 decoding library and console player. It uses floating point or integer math, along with several special optimizations (3DNow, SSE, ARM, ...) to make it most efficient.
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    4.9 out of 5 stars 27 Reviews
    Downloads: 13,069 This Week
    Last Update:
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  • 4
    SoX is the Swiss Army Knife of sound processing utilities. It can convert audio files to other popular audio file types and also apply sound effects and filters during the conversion.
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    4.7 out of 5 stars 51 Reviews
    Downloads: 11,822 This Week
    Last Update:
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  • 5
    LAME (Lame Aint an MP3 Encoder)

    LAME (Lame Aint an MP3 Encoder)

    A high quality MP3 encoder

    LAME is an educational tool to be used for learning about MP3 encoding. The goal of the LAME project is to improve the psycho acoustics, quality and speed of MP3 encoding. Note: we provide source code only!
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    Downloads: 40,386 This Week
    Last Update:
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  • 6
    Super Audio CD Decoder
    Super Audio CD Decoder input plugin for foobar2000. Decoder is capable of playing back Super Audio CD ISO images, DSDIFF, DSF and DSD WavPack files. DSD(DoP) and PCM output modes. Separate DSD Processor/DSD Converter plugins for track extraction into DSD/DST encoded files.
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    4.8 out of 5 stars 40 Reviews
    Downloads: 5,866 This Week
    Last Update:
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  • 7

    ffdshow

    A DirectShow and Video for Windows codec (VFW)

    ffdshow is an advanced DirectShow filter and Video for Windows codec (VFW) codec that supports many audio and video formats. For example: H.264, MPEG-4, MPEG-2, H.263, VP3, VP6, Theora, MJPEG, SVQ3, MP3, AC3, DTS, E-AC3, AAC, and Vorbis.
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    4.8 out of 5 stars 71 Reviews
    Downloads: 3,015 This Week
    Last Update:
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  • 8
    The SoX Resampler library

    The SoX Resampler library

    High quality, one-dimensional sample-rate conversion library

    The SoX Resampler library `libsoxr' performs one-dimensional sample-rate conversion—it may be used, for example, to resample PCM-encoded audio. It aims to give fast and high quality results for any constant (rational or irrational) resampling ratio. Phase-response, preserved bandwidth, aliasing, and rejection level parameters are all configurable; alternatively, simple `preset' configurations may be selected. An experimental, variable-rate resampling mode of operation is also included.
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    5.0 out of 5 stars 3 Reviews
    Downloads: 4,100 This Week
    Last Update:
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  • 9
    Burn

    Burn

    Simple but advanced disc burning for macOS

    Create data discs with advanced data settings. Create video and audio discs, Burn will convert if needed. Create DVD-Video discs. Recreate discs. Burn doesn't reinvent the wheel, it uses many powerful open source Unix utilities and is also open source.
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    4.1 out of 5 stars 43 Reviews
    Downloads: 2,450 This Week
    Last Update:
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  • 10
    Bauer stereophonic-to-binaural DSP

    Bauer stereophonic-to-binaural DSP

    Headphones like a loudspeakers

    The Bauer stereophonic-to-binaural DSP (bs2b) library and plugins is designed to improve headphone listening of stereo audio records. Recommended for headphone prolonged listening to disable superstereo fatigue without essential distortions.
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    5.0 out of 5 stars 7 Reviews
    Downloads: 1,851 This Week
    Last Update:
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  • 11
    MAD is a high-quality fixed-point MPEG audio decoder with 24-bit output. The implementation is entirely new, based on the ISO/IEC standards, and performs especially well on systems without native floating-point support.
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    5.0 out of 5 stars 1 Review
    Downloads: 3,001 This Week
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  • 12
    BlackHole

    BlackHole

    BlackHole is a modern macOS audio loopback driver

    BlackHole is a modern virtual audio loopback driver for macOS that allows audio to be routed between applications with zero additional latency. It is widely used by musicians, streamers, developers, and audio engineers who need reliable internal audio routing without external hardware. BlackHole supports a wide range of sample rates and configurable channel counts, making it flexible for both simple and advanced audio workflows. The driver integrates directly with macOS Core Audio and appears in Audio MIDI Setup and supported audio applications. Designed with performance and stability in mind, BlackHole works on both Intel and Apple Silicon Macs without requiring kernel extensions or system security modifications. As an open-source project, it offers transparency, customization options, and active community-driven development.
    Downloads: 135 This Week
    Last Update:
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  • 13
    Open JTalk is a Japanese text-to-speech synthesis system. This software is released under the Modified BSD license.
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    Downloads: 2,462 This Week
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  • 14
    savonet
    Audio toolkit for streaming, aiming at complex Internet radio systems. Our stream generator is highly extensible and flexible. Script based, it can be a fully automatic daemon streamer, but is also used for live shows with an user-friendly GUI.
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    5.0 out of 5 stars 7 Reviews
    Downloads: 478 This Week
    Last Update:
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  • 15
    FLAC is a free lossless compressed audio format which supports streaming and archival. The FLAC project maintains the format and provides a reference encoder/decoder and input plugins for several popular audio players.
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    4.8 out of 5 stars 41 Reviews
    Downloads: 382 This Week
    Last Update:
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  • 16
    FluidSynth

    FluidSynth

    Software synthesizer based on the SoundFont 2 specifications

    FluidSynth is a real-time software synthesizer based on the SoundFont 2 specifications and has reached widespread distribution. FluidSynth itself does not have a graphical user interface, but due to its powerful API several applications utilize it and it has even found its way onto embedded systems and is used in some mobile apps.
    Downloads: 81 This Week
    Last Update:
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  • 17
    TTA Lossless Audio Codec
    Lossless compressor for multichannel 8,16 and 24 bits audio data, with the ability of password data protection. Being 'lossless' means that no data/quality is lost in the compression - when uncompressed, the data will be identical to the original.
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    4.9 out of 5 stars 27 Reviews
    Downloads: 359 This Week
    Last Update:
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  • 18
    mp3splt

    mp3splt

    utility to split mp3, ogg vorbis and FLAC files without decoding

    mp3splt is a free utility to split mp3, ogg vorbis and FLAC files without decoding, selecting begin/end time; if file is an album, you can get splitpoints automatically from internet or a local cue, cddb file. It also splits Mp3Wrap and AlbumWrap archives. Supports splitting and trimming by silence detection. For mp3 files, both ID3v1 and ID3v2 are supported using original tags or user defined tags.
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    4.7 out of 5 stars 27 Reviews
    Downloads: 354 This Week
    Last Update:
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  • 19
    eGuideDog free software for the blind
    eGuideDog project develops free software for the blind. Currently, we focus on WebSpeech, Ekho TTS and WebAnywhere.
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    5.0 out of 5 stars 16 Reviews
    Downloads: 315 This Week
    Last Update:
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  • 20
    butt (broadcast using this tool)

    butt (broadcast using this tool)

    Icecast and Shoutcast broadcasting client

    NOTE: This site is not maintained anymore. If you want to get the latest news and releases please visit https://danielnoethen.de/butt. butt (broadcast using this tool) is an easy to use, multi OS streaming tool. It supports ShoutCast and IceCast and runs on Linux, MacOS and Windows. The main purpose of butt is to stream live audio data from your computers Mic or Line input to an Shoutcast or Icecast server. Recording is also possible. It is NOT intended to be a server by itself or automatically stream a set of audio files.
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    4.5 out of 5 stars 46 Reviews
    Downloads: 292 This Week
    Last Update:
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  • 21
    Mikmod Sound System
    Mikmod is a module player and library supporting many formats, including mod, s3m, it, and xm. Originally a player for MS-DOS, MikMod has been ported to other platforms, such as Unix, Macintosh, BeOS, and Java(!!)
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    5.0 out of 5 stars 1 Review
    Downloads: 857 This Week
    Last Update:
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  • 22
    Gnaural

    Gnaural

    Entrain your brain!

    A programmable audio generator intended as an aural aid to meditation, implementing the binaural beat principle as described in Gerald Oster's Oct. 1973 Scientific American article "Auditory Beats in the Brain."
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    5.0 out of 5 stars 41 Reviews
    Downloads: 229 This Week
    Last Update:
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  • 23
    eSpeak NG

    eSpeak NG

    eSpeak NG is an open source speech synthesizer

    eSpeak NG is a free, open-source text-to-speech synthesizer that converts written text into spoken audio across more than 100 languages and accents. Developed as a continuation of eSpeak, it uses formant synthesis to generate speech with a compact memory footprint. The software supports adjustable voices, speaking rates, pitch, and pronunciation characteristics. It can produce spoken output in real time or export synthesized speech to WAV files. eSpeak NG also provides phoneme translation tools and supports Speech Synthesis Markup Language for controlling speech output. Its command-line interface, shared library, and Windows SAPI5 integration enable use in accessibility tools and other applications. It supports Linux, Windows, macOS, Android, and additional platforms.
    Downloads: 51 This Week
    Last Update:
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  • 24
    Extended Module Player

    Extended Module Player

    A multi-format module player and library

    libxmp is a library that renders module files to PCM data. xmp is a module player for Unix-like systems, based on libxmp, that plays over 90 mainstream and obscure module formats from Amiga, Atari, Acorn, Apple IIgs and PC, including Protracker (MOD), Scream Tracker 3 (S3M), Fast Tracker II (XM) and Impulse Tracker (IT) files.
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    5.0 out of 5 stars 4 Reviews
    Downloads: 331 This Week
    Last Update:
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  • 25
    FxSound

    FxSound

    FxSound application and DSP source code

    FxSound is a free, open-source audio enhancement software application designed to improve sound quality on Windows computers. The software uses a high-fidelity digital signal processing (DSP) engine to enhance audio clarity, volume, bass, and overall listening quality across applications. FxSound operates as a virtual audio device, processing system-wide audio from music players, streaming services, games, videos, and other applications. Users can customize their listening experience with an equalizer, adjustable audio effects, and sound presets optimized for different types of content. The application provides controls for enhancing bass response, improving vocal clarity, increasing volume, and refining audio dynamics without requiring expensive audio equipment. Built using the JUCE framework and distributed under the AGPL-3.0 license, FxSound offers an accessible audio enhancement solution with publicly available source code and community-driven development.
    Downloads: 44 This Week
    Last Update:
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