Open Source Windows Sound/Audio Software

Equalizer APO is a parametric / graphic equalizer for Windows. It is implemented as an Audio Processing Object (APO) for the system effect infrastructure introduced with Windows Vista. Features: - virtually unlimited number of filters - works on any number of channels - very low latency, which makes it suited for interactive applications - low CPU usage - modular graphical user interface - VST plugin support - integrates into Voicemeeter (http://www.voicemeeter.com/) Requirements: - Windows Vista or later (currently only Windows 7, 8, 8.1, 10 and 11 have been tested) - the application must not bypass the system effect infrastructure (APIs like ASIO or WASAPI exclusive mode can not be used) Equalizer APO is best used in conjunction with Room EQ Wizard (http://www.roomeqwizard.com/), because it can read its filter text file format. Please have a look at the Wiki (http://sourceforge.net/p/equalizerapo/wiki/) for instructions on installation and configuration.

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.

Peace equalizer is a Windows PC interface for Equalizer APO http://sourceforge.net/projects/equalizerapo. Besides an system-wide audio equalizer on your Windows PC, Peace has an effects panel for balance, crossfeeding, delay, etc., a graph window and much more. In short: Peace is an equalizer and audio mixer for all your PC software on any Windows version from Vista to 11. Your configuration (e.g. EQ, preset, profile) can be saved and activated again by 1 click, hotkey, tray or desktop shotcut. Note: Your virus scanner may detect a virus in Peace.exe or PeaceSetup.exe. This is a false positive, more info on the forum. Install by running downloaded PeaceSetup.exe. Equalizer APO has to be installed first. After a Windows update a re-install of Equalizer APO might be needed. YouTubers: Please mention Peace Equalizer in your video description. Many thanks to my reviewers and supporters.

MP3Gain analyzes and losslessly adjusts mp3 files to a specified target volume. It does not simply do peak amplitude normalization. Instead, it performs statistical analysis to determine how loud the file actually sounds to the human ear.

LMS is an open source multi-room audio system. It was created by SlimDevices and then acquired by Logitech. Although Logitech has ended development of hardware devices, the project is still very active with lots of plugin released regularly. New hardware players can be added using PI devices and DAC board to build high-quality multi-room. I've created some extra plugins, especially to include new standard hardware/players to the LMS ecosystem: UPnP/DLNA (Sonos), ChromeCast and AirPlay.

Media Player Classic Home Cinema (MPC-HC) is an extremely light-weight, open source media player for Windows®. Media Player Classic Home Cinema supports all common video and audio file formats available for playback. Based on the original Guliverkli project, Media Player Classic Home Cinema contains a lot of additional features and bug fixes. Plus Media Player Classic Home Cinema is 100% spyware free, there are no advertisements or toolbars. We care about keeping an open project, open and free for contributions wherever they may come from.

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.

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.

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. Direct DSD playback for compatible devices. Separate DSD Processor/DSD Converter plugins for track extraction into DSD/DST encoded files.

FreePiano is a virtual MIDI keyboard and a VST host for windows. You can use freepiano to Play piano with computer keyboard or MIDI keyboard with any vst instrument you like, or output through MIDI. Or generate any MIDI message with any key on the keyboard.You can also record your song and export a MP4 movie to share with your friends.

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.

It's a side project that I made for myself since when I use my own mechanical keyboard at late night or in the office and my parents and my coworkers hate that a lot because the sound of the keyboard is very loud (especially in quiet places). So if you are facing this issue just like me then this product is for you! - Plays typewriter sound - You can add more keyboard sound set by recording any sound you like and add them to this app with some easy steps. - Use your laptop keyboard or non-mechanical keyboard at work and still hear your loved sound. - Use this app as any purpose as you want (such as demo for the buyer about the keyboard sound before they buy it, custom any sound for any key...) With Mechvibes Editor, you can create a new sound pack, edit existing sound pack or share them with your friends.

Audacity is a free, easy-to-use, multi-track audio editor and recorder for Windows, Mac OS X, GNU/Linux and other operating systems. Audacity is free software, developed by a group of volunteers and distributed under the GNU General Public License (GPL). Programs like Audacity are also called open source software, because their source code is available for anyone to study or use. There are thousands of other free and open source programs, including the Firefox web browser, the LibreOffice or Apache OpenOffice office suites and entire Linux-based operating systems such as Ubuntu

X Lossless Decoder(XLD) is a tool for Mac OS X that is able to decode/convert/play various 'lossless' audio files. The supported audio files can be split into some tracks with cue sheet when decoding. It works on Mac OS X 10.4 and later.

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!

Text to Speech engine for English and many other languages. Compact size with clear but artificial pronunciation. Available as a command-line program with many options, a shared library for Linux, and a Windows SAPI5 version.

This tool imitates the 7.1 to binaural sound effect of many surround virtualizations by making use of Equalizer APO's convolution filter. Available are impulse response that were recorded with activated... – Dolby Atmos Headphone – CMSS-3D – SBX Pro Studio Surround (also found in BlasterX Acoustic Engine & THX TruStudio Pro) – Dolby Headphone – Sennheiser GSX Binaural 7.1 – DTS Headphone:X – Windows Sonic Headphone – Dolby Home Theater v4 Headphone Surround Virtualizer – Razer Surround – Out Of Your Head – Flux HEar V3 – OpenAL and DirectSound3D HRTFs – Waves Nx – and many more! Visit the wiki for more information on how it works and how to set up: https://sourceforge.net/p/hesuvi/wiki/Help/ A little demonstration video can be found here: https://www.youtube.com/watch?v=WlqpG2euh50 Equalizer APO by Jonas Thedering has to be installed first: https://equalizerapo.sourceforge.io

FFmpeg Batch AV Converter is a free universal audio and video encoder, that allows to use the full potential of ffmpeg command line with a few mouse clicks in a convenient GUI with drag and drop, progress information. Some fancy wizards make things easy for non-experts. Thanks to its multi-file encoding feature, it may be the fastest a/v batch encoder available, since it maximizes system resources usage by launching as many simultaneous processes up to user cpu thread count. You can change encoding priority, pause and resume, set automatic shutdown. It is good for seasoned ffmpeg users as well as beginners. It provides unlimited single or multi-file batch encoding for almost any audio/video format. You can use any set of parameters and try them before starting encoding. You can multiplex streams, subtitle videos (as track and hardcoded), trim, concatenate, record screen, capture M3u8 or YouTube URLs. You can also get multimedia info.

LosslessCut aims to be the ultimate cross platform FFmpeg GUI for extremely fast and lossless operations on video, audio, subtitle and other related media files. The main feature is lossless trimming and cutting of video and audio files, which is great for saving space by rough-cutting your large video files taken from a video camera, GoPro, drone, etc. It lets you quickly extract the good parts from your videos and discard many gigabytes of data without doing a slow re-encode and thereby losing quality. Or you can add a music or subtitle track to your video without needing to encode. Everything is extremely fast because it does an almost direct data copy, fueled by the awesome FFmpeg which does all the grunt work. Lossless merge/concatenation of arbitrary files (with identical codecs parameters, e.g. from the same camera). Lossless stream editing: Combine arbitrary tracks from multiple files (ex. add music or subtitle track to a video file).

FAAC is an Advanced Audio Coder (MPEG2-AAC, MPEG4-AAC). The goal of FAAC is to explore the possibilities of AAC and exceed the quality of the currently best MP3 encoders. You can submit pull requests via GitHub: https://github.com/knik0/faac https://github.com/knik0/faad2

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.

OBS Studios, also known as Open Broadcaster Software, is a free and open source software program for live streaming and video recording. Features of the software include device/source capture, recording, encoding and broadcasting. Stream on Windows, Mac or Linux. This software is commonly used by video game streamers on the popular streaming platform Twitch.

Hydrogen is an advanced drum machine for GNU/Linux, Windows and Mac OS X. It's main goal is to bring professional yet simple and intuitive pattern-based drum programming.

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.

Kid3 audio tag editor can edit the tags of MP3, Ogg, FLAC, MPC & WMA files in an efficient way, convert between ID3v1 and ID3v2, set the tags of multiple files, generate tags from file names or vice versa and import from freedb, MusicBrainz and Disco