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ANNOUNCE: The Snack Sound Toolkit v2.1b1

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This release contains:* Support for reading the Ogg/Vorbis file format (free MP3 challenger)* LPC spectral analysis contributed by Erhard Rank* New IIR/FIR filter type contributed by Ted Dunning* Support for WAV and AU files with 8-byte sample encodings* Many bug fixes* New/updated demosChange log3/16/01 (bug fix) Fixed misplaced comment which caused distorted MP3decoding. (Wilkason)3/21/01 (bug fix) Fixed problem for spectrogram canvas items that causeda crash in some cases.3/22/01 (bug fix) Corrected AU file format handler which incorrectlyhandled Lin8 files as Lin8Offset.3/23/01 (enhancement) Added read support for files with double (8-byte)samples to AU and WAV file format handlers.3/23/01 (bug fix) Fixed problems reading sound files containing floatsamples.3/27/01 (bug fix) Removed unnecessary limit on the number of channelsfor audio I/O on the SGI platform.3/27/01 (bug fix) Fixed problem with data copying that sometimes occuredwhen reallocating from a small size to a much larger one.3/28/01 (bug fix) Corrected out of bounds problem in the pitch command.4/10/01 (bug fix) Corrected bug in the snacksphere package for soundfiles containing fewer samples than specified in the header.4/15/01 (new feature) New filter type: iir, which implements IIR/FIRfiltering. (Dunning)4/15/01 (new feature) LPC analysis support added in section canvas itemand in dBPowerSpectrum command. (Rank)4/15/01 (enhancement) Slight beautification of Waveform postscript.(Rank)4/24/01 (new feature) Added support for the Ogg/Vorbis file format(SnackOgg.c) through the optional package "snackogg".The Snack Sound Toolkit is designed to be used with a scriptinglanguage.Currently it supports Tcl/Tk and Python.Snack adds commands to play, record, and process sound and supportsin-memory sound objects, file based audio, and streaming audio.It handles fileformats such as WAV, MP3, AU, AIFF, and CSL.There are optional packages for NIST/Sphere and Ogg/Vorbis file formats.Snack is extensible, new commands, filters, and sound file formats canbe added using the Snack C-library. An easy to build example extensionis contained in the source distribution.Snack also does sound visualization, e.g. waveforms and spectrograms.The visualization objects update in real-time and can output postscript.Snack works with Tcl8.0 - Tcl8.4 and Python 1.5.2-2.1Platforms: Linux, Solaris, HP-UX, IRIX, NetBSD, Macintosh, andWindows 95/98/NT/2K.Source and binaries can be downloaded fromhttp://www.speech.kth.se/snack/Regards,Kare Sjolanderkare at speech.kth.se

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