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----------------- Released 2.2, 11/14/02 -----------------------
11/19/02 (bug fix) Fixed problem with SnackAudioPlayed() on Windows,
return value could roll over after lengthy sound output. (Wilkason)
1/16/03 (enhancement) Canvas items now work on Mac OS X, also added
Makefile hardcoded for Tcl8.4.1.
1/24/03 (new feature) Support for standard configure/make build systom
on Mac OS X.
1/24/03 (new feature) Core Audio support for Mac OS X.
2/06/03 (new feature) Improved build support for Mac OS X. (Steffen)
2/10/03 (new feature) New sample encoding format Lin24Packed.
2/11/03 (bug fix) Fixed problem with the ESPS pitch tracker.
2/10/03 (new feature) Snack libraries compiled for Tcl/Tk 8.4 now work
with earlier stub versions as well.
----------------- Released 2.2.1, 2/21/03 -----------------------
2/28/03 (new feature) Included project files for MSVC++ 7.0.
3/3/03 (new feature) 24-bit recording supported on 24-bit capable hardware.
3/5/03 (change) Updated the release to use Tcl/Tk 8.4 as default
3/6/03 (bug fix) Fixed convert command for conversions involving Lin24
and Lin32 sample encodings.
5/8/03 (enhancement) Several improvements to the MP3 decoder. (Wilkason)
5/8/03 (enhancement) Enhanced streaming support regarding slow
networks and playback of long tracks. (Wilkason)
----------------- Released 2.2.2, 5/9/03 -----------------------
8/5/03 (bug fix) Fixed bug in audio code for Mac OS X.
8/26/03 (enhancement) On Sun machines the environment variable
AUDIODEV is now used.
8/27/03 (new feature) Updated Snack script compiler, wrap.tcl, to use
TclKit.
8/27/03 (new feature) New sound commands powerSpectrum and speatures.
8/29/03 (change) Changed distribution format for Windows.
----------------- Released 2.2.3, 8/29/03 -----------------------
9/9/03 (bug fix) Bug fix in the AIFF header parsing routine.
11/20/03 (bug fix) Bug fix in the pitch command for short sounds (ESPS
method) (Theado)
11/20/03 (new feature) Easier Python installation through setup.py
script. (Owen)
2/6/04 (bug fix) Bug fix for Windows XP which caused a crash when
using USB sound cards.
2/6/04 (bug fix) Bug fix for Macintosh OS X audio which caused echo
effect.
2/6/04 (bug fix) Bug fix for Linux OSS which handles audio device busy
better. (Wilkason)
2/6/04 (enhancement) Added ability to set Windows DirectSound flags
through Tcl integer variables. DSBCAPS_FLAG for DSBCAPS_* and
DSSCL_FLAG for IDirectSound_SetCooperativeLevel(). (Wilkason)
----------------- Released 2.2.4, 2/9/04 -----------------------
3/12/04 (bug fix) Fixed memory leak in pitch command. (DeJong)
3/23/04 (change) Updates for the ALSA 1.0 API. (Max)
3/23/04 (enhancement) Modifications to allow build on 64-bit
platforms. (Max)
4/9/04 (new feature) Mingw support added. (DeJong)
4/9/04 (bug fix) Fixes for playback clean-up. (DeJong)
4/21/04 (enhancement) Support for playback (in addition to recording)
of more than two channels on Windows.
5/3/04 (bug fix) MME audio device selection corrected on Windows.
5/5/04 (bug fix) Corrected bug which made it impossible to "stop"
queued sounds.
----------------- Released 2.2.5, 5/5/04 -----------------------
5/12/04 (bug fix) Corrected sample command for use with 24-bit integer
samples.
5/15/04 (bug fix) Corrected sample command, now raises an error when
more sample values than number of channels are given.
6/8/04 (bug fix) Correction for Lin24 format on Windows. (Schnarr)
6/14/04 (bug fix) Corrected mean calculation for dBPowerSpectrum.
6/14/04 (bug fix) Added out-of-bounds checks SnackCopySamples(),
Snack_PutSoundData(), and Snack_GetSoundData(). (DeJong)
----------------- Released 2.2.6, 6/15/04 -----------------------
6/18/04 (bug fix) Added out-of-bounds check in ReadSound(). (DeJong)
6/24/04 (bug fix) Several fixes regarding spectral estimation.
6/24/04 (new feature) New option -regressionorder for the speatures
command.
----------------- Released 2.2.7, 6/24/04 -----------------------
8/18/02 (bug fix) Fix for configure. (Allaert)
8/18/02 (bug fix) Fixes for Mingw. (DeJong)
8/18/02 (bug fix) Fixed the -windowtype option to formant to actually
use the window names given in the manual.
8/18/02 (bug fix) Fixed the speatures command to update sound
properties correctly.
9/22/04 (change) Increased the number of default shades of grey for
spectrograms to 256.
9/23/02 (bug fix) Fixed problem with sound I/O using Windows
DirectSound. (DeJong)
9/24/04 (new feature) New command lastIndex, which returns last sample
index of a sound object.
----------------- Released 2.2.8, 9/30/04 -----------------------
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----------------- Released 2.2a2, 6/20/02 -----------------------
7/17/02 (new feature) Support for Linux ALSA PCM sound drivers. New
compile time configure option --enable-alsa.
9/12/02 (enhancement) Many improvements to the MP3 decoder,
e.g. better seeking. (Wilkason)
9/12/02 (new feature) Automatic selection of default sample rate for
new sound objects.
----------------- Released 2.2a3, 9/13/02 -----------------------
9/19/02 (new feature) Modified sources (added CONST qualification on
pointers in Tcl API's where required) in order to compile cleanly with
Tcl8.4.0 as well as with earlier versions.
9/19/02 (enhancement) Updated package "snackogg" to support release
1.0 of Ogg/Vorbis.
9/29/02 (new feature) New sound command 'mix', which is used to mix
two sound objects with optional scaling.
9/29/02 (bug fix) Fixed problem with the 'convert' command and some
joint rate/channel conversion combinations. (Pique)
----------------- Released 2.2b1, 9/29/02 -----------------------
10/29/02 (bug fix) Fixed segmentation fault that occured when playing
a sound and start time > end time, and no callback was
registered. (Davis)
10/29/02 (bug fix) Fixed problem with crash on exit for some Windows
systems.
11/4/02 (enhancement) Better handling of mono output on stereo only
hardware.
11/5/02 (enhancement) Improvements to the MP3 decoder to allow
multiple sounds to cleanly decode one stream each
simultaneously. (Wilkason)
11/5/02 (change) Various fixes to configure.in/Makefile.in and
win/*.dsp.
----------------- Released 2.2b2, 11/6/02 -----------------------
11/14/02 (new feature) Support for Mac OS X. (McSpadden)
11/14/02 (bug fix) Fixed a couple of problems with sound I/O using
Windows DirectSound.
----------------- Released 2.2, 11/14/02 -----------------------
11/19/02 (bug fix) Fixed problem with SnackAudioPlayed() on Windows,
return value could roll over after lengthy sound output. (Wilkason)
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on NetBSD
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buildlink stuff from Makefile.
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The Snack Sound Toolkit is designed to be used with a scripting
language such as Tcl/Tk or Python. Using Snack you can create powerful
multi-platform audio applications with just a few lines of code. Snack
has commands for basic sound handling, e.g. sound card and disk
I/O. Snack also has primitives for sound visualization, e.g. waveforms
and spectrograms. It was developed mainly to handle digital recordings
of speech, but is just as useful for general audio. Snack has also
successfully been applied to other one-dimensional signals.
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