Ecasound is a software package designed for multitrack audio
processing. It can be used for simple tasks like audio playback,
recording and format conversions, as well as for multitrack effect
processing, mixing, recording and signal recycling. Ecasound
supports a wide range of audio inputs, outputs and effect
algorithms. Several open-source audio packages, like for instance
ALSA, OSS, mpg123, lame, libaudiofile and MikMod, are directly
supported. One of the advantages of ecasound's chain-based design
is that effects can easily be combined both in series and in
parallel. Oscillators and MIDI-CCs can be used for controlling
effect parameters. Included user-interfaces are ecasound - a
versatile console mode interface, qtecasound - a Qt-based
X-interface and various command-line utils suitable for batch
processing.