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# CSOUND VERSION 6.16 RELEASE NOTES - DRAFT - DRAFT - DRAFT - DRAFT
This delayed release is mainly a bug fixing release, but there
are significant new opcodes, including support for simpler use of MIDI
controls and a new opcode to connect to an Arduino. Also there is an
optional limiter in the sound output chain.
There are a number of new filters, including including the final
opcode written by the 'father of computer music' Max Mathews (with
Julius Smith!), ported by Joel Ross.
-- The Developers
## USER-LEVEL CHANGES
### New opcodes
- cntDelete deletes a counter object
- lfsr, a linear feedback shift register opcode for pseudo random
number generation.
- ctrlsave stores the current values of MIDI controllers in an array.
- turnoff3 extends tuning off to remove instrument instances that are
queued via scheduling but not yet active.
- ctrlprint prints the result of a ctrlsave call in a form that can be
used in an orchestra.
- ctrlprintpresets prints the MIDI controller preset.
- ctrlselect selects a preset for MIDI controller values.
- ctrlpreset defines a preset for MIDI controllers.
- outall writes a signal to all output channels.
- scale2 is similar to scale but has different argument order and has
an optional port filter.
- arduinoReadF extends the arduino family to transfer floating point
values.
- triglinseg and trigexpseg are triggered versions of linseg and
expseg
- vclpf is a 4-pole resonant lowpass linear filter based on a typical
analogue filter configuration.
- spf is a second-order multimode filter based on the Steiner-Parker
configuration with separate lowpass, highpass, and bandpass inputs
and a single output.
- skf is a second-order lowpass or highpass filter based on a
linear model of the Sallen-Key analogue filter.
- svn is a non-linear state variable filter with overdrive control
and optional user-defined non-linear map.
- autocorr computes the autocorrelation of a sequence stored in an array.
- turnoff2_i is init-time version of turnoff2.
- scanu2 is a revision of scanu to make it closer to the original
concept. Damping now a positive value and plucking initialisation
totally rewritten, plus various code improvements.
- st2ms and ms2st are stereo to MS and vice-versa conversion opcodes
with stereo width control.
- mvmfilter is a filter with pronounced resonance and controllable decay time.
### New gen
- gen44 allows the writing of stiffness matrices for scanu/scanu2 in a
textual format.
### Orchestra
- The operations += and -= now work for i and k arrays.
- k-rate array operators are now only processed at k-rate.
### Score
- An instance of a named instrument can have a decimal fraction added
to the name to allow for tied notes and other facilities that were
only avaliable for numbered instruments.
### Options
- New options --limiter and --limiter=num (where num is in range (0,1]
inserts a tanh limiter (see clip version2) at the end of each k-cycle.
This can be used when experimenting or trying some alien inputs to save
your ears or speakers. The default value in the first form is 0.5
- A typing error meant that the tag <CsShortLicense> was not recognised,
although the English spelling (CsSortLicence) was. Corrected.
- New option --default-ksmps=num changes the default value from the
internal fixed number.
- New environment variable `CS_USER_PLUGINDIR` has been added to
indicate a user plugin dir path (in addition to the system plugin
directory). This added search path defaults to standard locations
on different platforms (documented in the manual).
### Modified Opcodes and Gens
- slicearray_i now works for string arrays.
- OSCsend always runs on the first call regardless of the value of kwhen.
- pvadd can access the internal ftable -1.
- pan2 efficiency improved in many cases.
- Add version of pow for the case kout[] = kx ^ ivalues[]
- expcurve and logcurve now incorporate range checks and corrects end
values.
- Streaming LPC opcodes have had a major improvement in performance
(>10x speedup for some cases), due to a new autocorrelation routine.
- Restriction on size of directory name size in ftsamplebank removed.
- If a non string is passed to sprintf to be formatted as a %s an error
is signalled.
- readk family of opcodes now support comments in the input which is ignored.
- Added iflag parameter to sflooper.
- Opcodes beosc, beadsynt, tabrowl, and getrowlin removed.
### Utilities
### Frontends
### General Usage
- Csound no longer supports Python2 opcodes, following end of life for Python 2.
## Bugs Fixed
- The wterrain2 opcode was not correctly compiled on some platforms.
- fprintks opcode crashed when format contains one %s.
- Bug in rtjack when number of outputs differed from the number in
inputs.
- FLsetVal now works properly with "inverted range" FLsliders.
- Conditional expressions with a-rate output now work correctly.
- Bug in --opcode-dir option fixed.
- sfpassign failed to remember the number of presets causing
confusion. This also affects sfplay ad sfinstrplay.
- midiarp opcode fixed (issue 1365).
- A bug in moogladder where the value of 0dbfs affected the output is
now fixed.
- Bugs in several filters where istor was defaulting to 1 instead of 0
as described in the manual have been fixed.
- Bug in assigning numbers to named instruments fixed. This
particularly affected dynamic definitions of instruments.
- Use of %s format in sprintf crashed if the corresponding item was not a
string. Thus now gives an error.
- Fix bug in ftprint where trigger was not working as advertised.
- Asynchronous use of diskin2 fixed.
- pvs2tab does not crash in the sliding case but gives a error.
- In some circumstances turnoff2 could cause the silencing of another
instrument for one k-cycle. This is now fixed.
- timeinstk behaved differently in a UDO to normal use. This has been
corrected.
- Fixed midiarp init method as it was causing an issue with one of the arp modes.
- Fixed scaling of attack stage of xadsr.
- Fix printarray behaviour for string arrays (default is to print at
every cycle); added a variant without trigger.
- Bug with named instrument merging in new compilations fixed.
- ATSA opcode atsinnoi could cause memory problems. The 6.16 release is better but not yet verified.
# SYSTEM LEVEL CHANGES
### System Changes
- New autocorrelation routine can compute in the frequency or
in the time domain. Thanks to Patrick Ropohl for the improvement
suggestion.
- Minimum cmake version bumped to 3.5.
- Image opcodes removed, now in plugin repo.
- faust opcodes removed, now in plugin repo.
- Python opcodes removed, now in plugin repo.
- Ableton Link opcodes removed, now on plugins repo.
### Translations
### API
### Platform Specific
- WebAudio
- iOS
- Android
- Windows
- MacOS:
Some opcode libs with dependencies have been removed from release. Image
opcodes, Python opcodes, Faust opcodes, and FLTK Widget opcodes have
been moved to a separate repository and are not included anymore.
- GNU/Linux
- Haiku port
- Bela
==END==
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