Open Source C++ Audio Mixers

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.

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

Mixxx is a free and open-source DJ software that enables DJs to create professional live mixes using digital music files. It runs on Windows, macOS, and Linux, making it accessible to DJs across all major platforms. Mixxx supports both beginners using just a laptop and experienced DJs using advanced hardware setups. Built-in BPM and key detection help DJs quickly find compatible tracks and achieve smooth transitions. With strong community-driven development, Mixxx is continuously improved by DJs and programmers from around the world. As a fully open-source project, Mixxx is and will always remain free to use.

Mixere is a standalone Windows application for mixing audio files. It has a spreadsheet-like interface that's ideal for live performance, and especially live sound collage. Imagine unlimited racks full of CD players, all connected to an automated mi

A convolution plug-in for Windows Media Player, DirectShow/DX (for use with ZoomPlayer Pro, Media Player Classic, etc) and VST. Allows cross-feeding of channels. For room correction, bass management, cross-overs, equalization, etc.

Provides interoperability between computer and Alesis HD24 harddisk recorder. Several OS platforms are supported. Only the program's source code is hosted on Sourceforge; To download the program, visit the HD24tools website.

With SoundManager you are able to control multiple sound channels of one or multiple sound cards. It uses ALSA to speak to the sound cards. An example how to use SoundManager would be a shop or store with multiple rooms where every should have its own speaker. Then with SoundManager you would have a single web interface where you could control every single speaker. SoundManager also allows to create different playlists and assign them to one or multiple sound channels. It is also possible to use line-in or a microphone instead of a playlist.

CIOS Audio Core is the infrastructure and subsystem in Collective Intelligence Operation System. It is a cross platforms audio abstract interface, supports including Mac OS X, Linux, Android, iPhone OS and Windows 7.

DJMix is an API for mixing sounds like MP3's files. A QT interface is provided as a first demo of realtime capacity of API (mixing,volume set, respeed, scratch, dj-rewind, sound section management).

TTtrigger is intended for theatre use. It uses jack to trigger sound effects and other sounds to predefined audio ports. A shortcut key can be assigned to each sound effect or you can trigger the sounds sequentially. TTtrigger uses the Qt toolkit. Linux is the only supported operating system at this time.

DBMix is a DJ mixer for digital audio. Current features: combines multiple streams into one output stream, pitch control, cueing, audio format conversion. DJ Mixer style gui (crossfader), xmms output plugin, command line client.

I recently updated VstBoard... it's been a while. The sources are on github now, and the infos on this page are not updated yet. An experimental VST host and plugin. Modular and programmable : create multiple setups (plugins parameters, audio and midi routing) and switch between them via automation or midi. Visit the homepage for more information : http://vstboard.blogspot.com

mp3 ogg mixer, dj solution with integrated light-controller via rs232 and special Hardware. Integrated jingle-player, prelisten, cueing, pitching, scratching, crossfader funkyou...

Midi Mixer is a simple daemon used for controlling mixers volume levels via MIDI controller (raw midi device). Main part of this project is a set of C++ classes dedicated for work with MIDI, like MIDI I/O, MIDI messages... Now just for FreeBSD.

A realistic real-time sound simulation usable in games and other interactive applications. It will include effects like echo's, HRTF's, Doppler, sound occlusion and other effect. Offered as an easy high level library that can be used from C and C++.

Attenteben is a multi track audio recording and beat production system

Audacity Policial (aka Audacity Police) is an extension of Audacity sound editor that was created to help police and justice investigations based on phone call and environmental recordings, supporting audio analysis and transcription.

CULDAW means Collaborative Ubiquitous Digital Audio Workstation. The goal if this project is to build a tool for Symbian S60 devices to produce music with phones. It includes an step sequencer and a synthetizer.

Dancing QT is a combined music database and player application specially designed for dancing schools and equivalent applications. Key features are an easy-to-use interface, fast search capabilities, playlist management, exact pitching and crossfading.

DigiXound is a full audio framework for professional audio performers. It will include a streaming kernel (formerly called uStream), a media manager and a GUI. We are actually in planning phase.

Dynics is an operating system for the 64-bit IBM-compatible PC, focussing on services for dedicated audio and MIDI processing. Dynics turns the PC into a powerfull and stable studio component. This is one step towards the DSC: Dynics Studio Computer.

Cross-platform audio engine that implements features necessary for basic audio processing such as file loading/saving, audio mixing, sample/bit rate conversion, audio mixing/chaining, effects processing and some simple DSP operations. Still under develo

This project wants to create a free plugin-based DJ tool for live mixing purposes. It will have pluggable modules for UI (XML based, external controls), sound output (multiple sound card support) and sound input (ogg, mp3, wav etc).

JackFX is a python module for midi control and realtime audio effects processing built using the Jack Audio Connection Kit. Effects are stackable, and can be chained in any configuration with only a few lines of python code.

VIA Envy24 based sound cards control utility, for the KDE environment