MN Library Change Log

MNLib is a set of C++ libraries and programs for audio processing and music. It is designed with portable C++ code for use on Linux, Microsoft platforms and others. MNLib and its documentation are Copyright 1999 Richard W.E. Furse (all rights reserved).

Change Log

Version 1.15 - 1 Sep 2000

• Sound card audio support for Windows.
• Addition of simple dedicated FMH encoder and standard decoder classes, rotation and gain.
• Repairs to controlled-opposites algorithm so searches more accurately and efficiently for multiple maxima. This was causing the decoder a long startup time and producing controlled opposite cases where rear speaker response was not quite flat.
• Small changes to MNServer interface.
• Explicit handling of synchronous and asynchronous event streams.
• Small fixes to comb filters.
• Addition of maths parser and realtime calculator (in development).

Version 1.14 - 31 May 2000

• Extensive development of the MNServer classes and Java mng package.
• Introduction and development LADSPA and its SDK.
• Introduction and development of the CMT LADSPA plugin library.
• Separation of LADSPA and CMT into independent project.

Version 1.13 - 27 Mar 2000

• Support for GCC on IRIX. Includes reworking of word order issues for persistence support and Wave file access.
• Other small changes.

Version 1.12 - 23 Mar 2000

• Unknown socket requests are now passed to ancestor class in all cases.
• Replacement of simple USDA_METHOD model with introduction of USDA_METHOD_PUSH. Removal of method access for streamed data types.
• Introduction of Unit::setQueryMode().
• Introduction of stcancl stereo cancellation utility.
• First version of the MNServer class, designed to publish the Network and Unit functionality through a simple API. Wrapper provided to provide the MN server as a TCP/IP server. Not yet published.
• Initial implementation of mng.MNManager java GUI. Not yet published.
• VSpace script language changed for clarity. Keyword `reflection' is replaced with `early reflection' and keyword `reverb' is replaced with `late reflection.' `minimum reflection gain' becomes `early reflection minimum gain.' Documentation updated. Added facilities to disable early/late reflection. New default values. New command line parameters. Introduce core radius for non-Ambisonic microphones.
• Simplification of socket mechanism to disallow presence of sockets for both input and output.
• Linux Audio Developer's Simple Plugin API (LADSPA) developed and plugin loading support introduced to Linux version of MN.
• Convert source comments for use with doxygen. Introduce doxygen and javadoc automatic documentation.
• Significant bug fix to VSpace early reflection engine.

Version 1.11 - 23 Dec 1999

• General consolidation, particularly of the MNServer module.

Version 1.10 - 8 Dec 1999

• Beginnings of IRIX support including big/little endian support for wave file access (but not for persistence support).
• Automatic unit run ordering and latency support introduced to code (including support for feedback loops). Process::getSystematicLatency() introduced.
• TIER_NETWORK general tie access implemented (including method access, internal to internal links etc).
• Significant improvement to Ambisonic decoder optimiser when designing equations for first order decoding. Changes to the speakers web page to correspond (also, inclusion of simple `Dolby'-like surround configuration).
• Corrections to the core logic for table and event processing in the core Unit interface. Introduction of the reference-counted FloatTable type. Conceptual clarification of method access for audio streams (support may be withdrawn entirely in the future).

Version 1.09 - 4 Nov 1999

• Addition of generic DoubleMatrix class, FMHRotation implementation and test code.
• ambidec reworked to support custom speaker rigs using matrices and multidimensional optimisation. Introduce support for ambiguity, indifference and coarseness concepts. Update speaker decode equation page generation.
• AmbisonicPlayer changed to use new decode equations.
• Web decode equations repaired.

Version 1.08 - 20 Oct 1999

• Switch second order Ambisonic channel ordering following discussion with Dave Malham and introduce RSTUV labelling. Rebadge CFormat as FMHFormat. Updated docs and code.

Version 1.07 - 19 Oct 1999

• amb2ster ditched and replaced by ambidec which now performs generic decoding (for certain standard rigs).
• Introduction of second order Ambisonics (Furse-Malham Higher Order Format) to core structures of MNLib. Second order Ambisonic microphones added and published in VSpace. Second order decoding added to AmbisonicPlayer and ambidec. Test script to examine properties of spherical harmonics. Speaker decoding parameters automatically published on webpage.
• Improvements to exception handling in Network and NetworkPlayer classes. VSpace now reports errors intelligently.
• Replacement of the Process::isBatchable() interface with Process::isRealtime().
• Structural work begun for and on the MNServer class including introduction of UnitSocketSpecialProperties, USSP_AFFECTS_SOCKET_PRESENT, NAER form and rearrangement of Network information request and checking algorithms.
• Introduction of change log.

Links

MN Library Main Index

The author Richard Furse can be emailed as richard@muse.demon.co.uk.