Hi laa-folk, Announcing the release of sfront 0.90 7/03/06, available for download from: http://www.cs.berkeley.edu/~lazzaro/sa/index.html For those of you unfamiliar with sfront, here's a short bio: Sfront compiles MPEG 4 Structured Audio (MP4-SA) bitstreams into efficient C programs that generate audio when executed. MP4-SA is a standard for normative algorithmic sound, that combines an audio signal processing language (SAOL) with score languages (SASL, and the legacy MIDI File Format). Under Linux and Mac OS X, sfront supports real-time, low-latency audio input/output, local MIDI input from soundcards, and networked MIDI input using RTP and SIP. A SIP server hosted on the Berkeley campus manages sessions. The documentation includes a book about SAOL programming. The change log for 0.90: [1] Sfront has been relicensed to use the BSD license (without the advertising clause). [2] If the SAOL global parameter interp is set to 1, sfront uses band-limited windowed sinc function interpolation for most normative interpolations defined in the MPEG standard (opcodes such as doscil, oscil, tableread, fracdelay, etc). An exception is the grain() core opcode, which still uses linear interpolation when interp=1. As a convenience, sfront has new command-line options to adjust the interpolation algorithm (-interp, -sinc_zcross, and -sinc_pilen). [3] 64-bit integer arithmetic is now used in the implementation of phase pointers for most core opcodes (the grain() opcode is an exception, grain uses float phase pointers). This change fixes the phase slipping problems reported by Florian Walter. [4] 8-bit and 24-bit WAV and AIFF files are now supported by the sample wavetable generator, and by the -ain fname.{wav,aif} and -aout fname.{wav,aif} drivers. See -aout for output syntax. [5] It is now possible to specify the input channel of a stereo WAV or AIFF file used by the sample wavetable generator, using the "filname.wav@n", when n = 0 or 1. This supports the creation of SAOL sample playback engines that access a database of stereo samples. [6] The network musical performance library has been updated to reflect the final RTP MIDI payload format that will appear in IESG-approved Internet-Drafts, that should appear as IETF RFCs later this year. [7] A few bug fixes. (a) The fir, iir, and reverb core opcodes may now be used as oparrays, fixing a bug reported by Jonathan Beyer. (b) Constant tables defined in the startup instrument no longer cause a run-time crash. (c) Table imports in the startup instrument that would produce a run-time error now generate a warning message, fixing a bug reported by Robert of all-your-bass. --- John Lazzaro http://www.cs.berkeley.edu/~lazzaro lazzaro [at] cs [dot] berkeley [dot] edu ---