Audio DJ Studio API for .NET is a .NET class developed by MultiMedia Soft that makes it easy to add sound playback and mixing capabilities to your applications; thanks to the integration with DirectShow codecs and with the BASS library, both adding decoding capabilities for the most common sound formats such as MP3, WAV, Ogg Vorbis and many others, Audio DJ Studio API for .NET allows creating powerful multimedia applications with stunning playback capabilities.

Audio DJ Studio API for .NET can load different sounds at the same time on different virtual decks, known as "players"; a player can be compared to a physical deck on a DJ console, the place where you put the vinyl/CD to be played. You can create a console with many virtual decks that can simultaneously play different songs on one or more sound cards. The availability of a certain number of players (decks) will enable the container application to mix several songs on different output channels, giving for example the ability to play advertising spots while songs are being played/mixed on different output channels: this is very useful for multi-channel radio stations automation software

Each player can have separate volume, tempo, playback rate, pitch and equalizer settings; each player also comes with a set of embedded and configurable visual feedback components such as VU-meter, spectrum analyzer, oscilloscope and waveform.

An embedded automatic fader can easily mix audio and video tracks loaded inside a playlist with an accurate and configurable fade-in/fade-out.

Derived from the experience with the Audio DJ Studio for .NET Winform component, this API can be used not only for developing Winform or WPF applications but also for developing console applications, Windows services, server-side ASP.NET web applications or any other application not requiring a user interface. Thanks to COM interoperability, the API can be invoked from legacy development environments such as Visual Basic 6 and Unmanaged Visual C++ with our without MFC.

Brief summary of available features:

Audio playback
Sound effects
Sound generator
Sound composer
MIDI
Audio streaming to and from the Internet
Video playback
Protocols and sound cards management
Playlists and sound management
CD management
Graphical features
Tags-related features
Misc features
Supported target systems
Supported .NET frameworks

Audio playback

Playback of the following audio formats:
- AAC and AAC+ - M4A and MP4 - PCM RAW format
- AC3 - MOD Music - PVF
- AIFF - Monkey's Audio (APE) - Speex
- ALAC - MP3, MP2, MP1 - SVX
- AU - Musepack - VOC
- CAF (1) - NIST - W64
- CD tracks - OGG Vorbis - WAV (2)
- FLAC - OPUS - WavPack
- IRCAM - PAF - WMA and WMV (3)
(1) Support for PCM 8/16/24/32 bits, PCM 32 bits floating point, G711 U-LAW, G711 A-LAW
(2) Support for uncompressed PCM and compressed formats whose ACM codec is installed inside the system
(3) Require the availability of Windows Media Player modules on the target PC

PCM stream queuing, allowing to play sound streams coming from an external source
Playback of sound files from memory buffers
Custom encryption/decryption of sounds
Support for loading and playing sound files, in all of the supported audio formats, from a ZIP file directly, also when the same is AES encrypted
Integration with Microsoft's Speech API, allowing to apply sound effects and output redirection to the sound stream generated by the SetOutputToAudioStream function of an instance of the System.Speech.Synthesis.SpeechSynthesizer class (requires .NET framework v. 3.0).

Sound effects

Volume control
Volume sliding
Pre-amplifier
Automatic Fader and volume automation with possibility to design volume fading curves
Equalizer
Auto-equalization of audio tracks through formatted XML files
BPM (Beats Per Minute) detection
Beats position detection
Tempo, Playback rate and Pitch support
Configurable normalization of sound level
Reverse playback of audio tracks
DirectX Media Objects (DMO) effects
EAX effects (if supported by the sound card)
Custom DSP effects
VST effects
Common filters (low-pass, high-pass, band-pass and stop-band)
Vocal remover filter
Real-time DC Offset removal

Sound generator

Pure wave tones
Composite or monaural wave tones
Binaural and multi-channel wave tones
Sliding wave tones
Noises
DTMF tones
Text to speech strings

Sound composer

Composing of new mono, stereo or multi-channel (up to 7.1) sound files by mixing together audio data taken from the following audio sources:

- The Microsoft Speech API which allows creating audio data from a string of text or from a text file through synthesized voices

- Regular sound files stored inside disk files or inside memory buffers

MIDI

Playback of MIDI files
SoundFonts management
Events management
Acquisition of MIDI events from a MIDI input device
VST Instruments

Audio streaming to and from the Internet

Playback of audio files stored on an Internet server (not available for MOD music files)
Playback of Internet radios Shoutcast (versions 1 and 2) Icecast and WMA streams
Playback of Internet radios streaming in HLS format (HTTP Live Streaming)
Support for acting as a source for ShoutCAST, IceCast and Windows Media Services streaming servers
Support for sending to streaming servers (ShoutCAST, IceCast and Windows Media Services), the output of any WASAPI loopback device, allowing to stream any sound being played through an output device also if generated by external and third-party applications (requires Windows Vista and later versions)

Video playback

Playback of video clips whose DirectShow compatible codecs are installed inside the target system, with support for multiple output windows
Mixing/blending of video clips inside a video mixer output window, with support for separate preview windows
Customizable On-Screen-Display (OSD) on the video mixer window
Customizable On-Screen-Display (OSD) on the video player
Brightness, contrast, saturation, hue and gamma management of the loaded video clip
Fullscreen management
Extraction of the audio track available inside a video clip, allowing to perform silence detection, BPM detection and waveform analysis

Protocols and sound cards management

DirectSound protocol
ASIO protocol with the possibility to directly playback the sound stream coming from ASIO input channels of the sound card
WASAPI protocol on Windows Vista and higher versions
Management of audio endpoints (CoreAudio) on Windows Vista and higher versions
Sound card output choice and speakers assignment
Support for cloning the audio stream on multiple output devices and speakers

Playlists and sound management

Playlists support (M3U, PLS, WPL)
New proprietary playlist format (PDJ), allowing to predispose mixing automation and volume automation on each single song and to play encrypted sounds
Position triggers management
Cue points management
Sound waveform analysis
Delayed playback of songs

CD management

Playback of CD tracks
CDDB database queries (through FreeDb servers)
CD cover pictures retrieval (through Amazon Web Services)

Graphical features

Real-time embedded visual feedbacks (VU-Meter, Oscilloscope, Spectrum, Waveform display)
Enhanced graphical spectrum analyzer
Graphic bars for custom displaying of Vu-Meters, Spectrum and Progress bars
Display of fade-in and fade-out curves applied to the embedded automatic fader
Waveform scroller allowing manual and automatic movement of the waveform
Support for drawing the waveform representation inside a graphical device context (HDC)
Virtual piano keyboard for MIDI management
Frames grabbing from video clips
Volume curve designer

Tagging features

Reading of most common frames of the following tag formats (Unicode strings supported):

- APE - FLAC
- ID3V1 - LYRICS3
- ID3V2.2 - MP4
- ID3V2.3 - OGG Vorbis
- ID3V2.4
Reading of the following chunks in WAV files:

- CART - DISP
- BEXT - LIST INFO

Misc features
Mixing of songs songs at application level, through custom stream mixers, allowing to save mixing results through the integration with our Active Sound Recorder control or to send mixing results to a streaming server
Exporting of loaded sound in WAV format (on both disk file or memory buffer)
Lyrics synchronization through LRC files
Downloading facility allowing the download of remote files into the local system and, in case of media files of supported format, with the option to load them automatically inside a player when download is completed
Support for ZIP format with AES encryption/decryption capabilities.
Integration with our Audio Sound Recorder API for .NET and Audio Sound Editor API for .NET components
Supported target systems:

From Windows XP up to Windows 10 in both x86 and x64 versions
From Windows Server 2003 up to Windows Server 2016 in both x86 and x64 versions
Supported .NET frameworks
.NET Framework 2.0
.NET Framework 3.0
.NET Framework 3.5 ("Client profile" not supported)
.NET Framework 4.0 ("Client profile" not supported)
.NET Framework 4.5
.NET Framework 4.6

Only for V.I.P