Baudline is a time-frequency browser designed for scientific visualization of the spectral domain. Signal analysis is performed by Fourier, correlation, and raster transforms that create colorful spectrograms with vibrant detail. Conduct test and measurement experiments with the built in function generator, or play back audio files with a multitude of effects and filters. The baudline signal analyzer combines fast digital signal processing, versatile high speed displays, and continuous capture tools for hunting down and studying elusive signal characteristics.
DAP is a comprehensive audio sample editing and processing suite. It currently supports AIFF and AIFF-C audio files, 8 or 16 bit resolution, and 1, 2 or 4 channels of audio data. The package offers comprehensive editing, playback, and recording facilities including full time stretch resampling, manual data editing, and a reasonably complete DSP processing suite.
DarkIce is a live audio streamer. It records audio from an audio interface (e.g. a sound card), encodes it, and sends it to a streaming server. DarkIce can record from OSS audio devices, ALSA audio devices, Solaris audio interfaces, and Jack sources. DarkIce can encode into MP3, MP2, Ogg Vorbis, and AAC formats, and can send the encoded stream to ShoutCast, IceCast 1.3.x and 2.x, and the Darwin Streaming Server.
dsproxy emulates an OSS device that "virtualizes" itself so each UID that opens /dev/dsp gets its own private sound device. At this point, simultaneous reading of /dev/dsp by another process "samples" the data out of dsproxy. The tagged audio data and ioctls stream may be saved to disk locally as the example program does, retargeted over a network, pushed into an effects generator (3-D sound), etc. The virtualization feature is a stepping stone to adding sound to VNC on a per-desktop basis with each user appearing to have total control over /dev/dsp. Most OSS ioctls are implemented, so applications such as xmame and rvplayer7 may be retargeted through dsproxy.
MusE is a multitrack virtual studio for Linux. It supports real-time editing of both MIDI and audio in an integrated environment. It has support for LADSPA and DSSI plugins (with Win VST support), JACK, and ALSA-MIDI output and input as well as internal softsynths. Numerous MIDI editors are available, including a piano roll, score editor, and drum editor. There is full automation for both MIDI and audio.
Protux is being developed to be a complete Digital Media Production tool, or Digital Media Workstation. The focus is on GNU/Linux users, but it runs in any workstation with a Java >=1.5 VM installed, and even over the Web through a standard browser that supports Java. It aims to offer an integrated environment for audio, video, and MIDI production throught a innovative interface where the productivity is focused.
rawrec and rawplay are utilities designed to provide the user with a simple way of recording and playing raw audio data. Options exist to control the timing and padding of the run as well as the dsp parameters. The main ring buffer size and buffer fragment size can be set if desired. These programs are particularly useful in conjunction with the sox utility.