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 demos Change log 3/16/01 (bug fix) Fixed misplaced comment which caused distorted MP3 decoding. (Wilkason) 3/21/01 (bug fix) Fixed problem for spectrogram canvas items that caused a crash in some cases. 3/22/01 (bug fix) Corrected AU file format handler which incorrectly handled 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 float samples. 3/27/01 (bug fix) Removed unnecessary limit on the number of channels for audio I/O on the SGI platform. 3/27/01 (bug fix) Fixed problem with data copying that sometimes occured when 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 sound files containing fewer samples than specified in the header. 4/15/01 (new feature) New filter type: iir, which implements IIR/FIR filtering. (Dunning) 4/15/01 (new feature) LPC analysis support added in section canvas item and 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 scripting language. Currently it supports Tcl/Tk and Python. Snack adds commands to play, record, and process sound and supports in-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 can be added using the Snack C-library. An easy to build example extension is 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 1.5.2-2.1 Platforms: Linux, Solaris, HP-UX, IRIX, NetBSD, Macintosh, and Windows 95/98/NT/2K. Source and binaries can be downloaded from http://www.speech.kth.se/snack/ Regards, Kare Sjolander kare at speech.kth.se
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