[LAA] [ANN] Ecasound 2.5.0 released
kvehmanen at eca.cx
Sat Aug 16 19:18:22 EDT 2008
Ecasound 2.5.0 has been released! Releases notes follow:
1. Summary of changes in this release
A set of new input types, including a tone generator, audio looper,
selector and sequencer ("playat"), have been added. Ecasound EWF file
support has gone through a major refactoring. Threshold gate functionality
has been extended. The Ecasound Emacs mode has been updated with more ECI
commands. The usual set of bugs have been fixed.
2. What is Ecasound?
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.
Effects and audio objects can be combined in various ways, and their
parameters can be controlled by operator objects like oscillators
and MIDI-CCs. A versatile console mode user-interface is included
in the package.
Primary platform for running Ecasound is GNU/Linux. Ecasound can
also be run on many UNIX-derived systems such as FreeBSD, Mac OS X
and Solaris. Limited support for Windows is available through
Cygwin. Ecasound is licensed under the GPL. The Ecasound Control
Interface (ECI) is licensed under the LGPL.
3. Changes since in 2.5.x series
* Added a new audio looper object. For instance "-i:audioloop,foo.wav"
will play "foo.wav" and loop it indefinitely. See http://eca.cx/examples
and ecasound(1) man page for more information.
* Added a new audio selector object. Specifying
"-i:select,5,15.2,foo.wav" will play out 15.2sec of
"foo.wav", starting at position 5sec (i.e. selects range
5.0-20.2sec). See http://eca.cx/examples and ecasound(1)
man page for more information.
* Added a new sequencer object that allows to play audio
clips at a given position. Specifying
"-i:playat,25.0,foo.wav" will play out "foo.wav"
starting at position 25.0sec (i.e. the first 25.0secs
will be silent and then "foo.wav" is played from
the beginning). See http://eca.cx/examples and ecasound(1)
man page for more information.
* Ability to stack audio objects. For instance
"-i audioloop,reverse,select,10,15,foo.wav" will loop
a reversed 15sec segment taken from 10sec onwards
* Code for Ecasound Wave Files (EWF) has been mostly rewritten
to fix longstanding bugs and design issues. This release also
marks the ability to write to EWF files as a deprecated feature
that will be removed in a later release. One new feature is
the ability to specify parameters in terms of samples instead
* Added a simple tone generator object. For example '-i:tone,sine,440,10.3'
will produce a 440Hz sine tone with duration of 10.3 seconds. This input
type will be especially useful for reproducing bugs in complicated
chainsetups, without the need to exchange complete session data (which
usually are composed of large amounts of audio files).
* Added 'reopen-count' parameter to threshold gate (-ge) operator.
For instance when recording vinyl/tapes, this allows to automatically
restart recording when a new track is started. When the gate is
closed, no audio is passed through to the output file, but
otherwise recording is kept running. Patch from Andrew Lees.
* Major update to the "Ecasound Examples": http://eca.cx/examples
* Updates to ecasound.el (ecasound emacs mode): new ECI commands
* Various bugs (in runtime functionality, documentation as well as
build issues) have been fixed.
Full list of changes is available at:
4. Interface and configuration file changes
The interactive mode commands 'cop-add' and 'ctrl-add' now allow
aternate syntax: both "-<id_string>:par1,...,parN" and
"<id_string>:par1,...,parN" are now accepted. So while previously
only "cop-add -efl:400" was recognized, now programs can
also use the more sane looking "cop-add efl:400" variant.
Output of "cs-status" (aka "status", "st") command has
changed. More details are now printed about active chainsetups,
while inactive setups are just listed. Previously one had to
use multiple separate status commands ("cs-status", "aio-status"
and "cop-status") to get a good overview of what is happening.
The intent is to now print all essential information with
just one command, while more detailed information is still
available through the separate commands.
5. Contributors to 2.5.x series
Patches - Accepted code, documentation and build system changes
* Cyril Brulebois (1) [cyrilbrulebois]
Compilation error with GCC-4.3. Reported as Debian
* Fabian Groffen (1) [grobian]
Fixed Mac OS X 10.5 build error.
* Andrew Lees (1) [andrewl]
Added 'reopen-count' parameter to '-ge'.
Bug Hunting - Reports that led to bugfixes (items closed)
* Julien Claassen (2)
Traced down a severe error in the development builds related
to parsing and handling JACK connection parameters. Bugs
in the refactored EWF code.
* Rocco (2)
Bugs in the new 'audioloop' object. Bug in JACK server
* Duphil (1)
Bug in 'cs-save/cs-save-as'.
* Jan Weil (1)
Bug in 'cs-status' output.
* Sergei Steshenko (1)
Sloppy parsing of "loop" device arguments
Feature suggestions - Ideas that led to new features (items)
* Sergei Steshenko (1)
Ability to use string tags as loop device identifiers
Participants of the Last Minute Test Release Effort
* Brad Bowman
* Julien Claassen
6. Links and files
Web site (and mirrors):
List of distributions with maintained Ecasound support:
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