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# CSOUND VERSION 6.13 RELEASE NOTES
Not many new opcodes but there are a significant number of opcodes being
extended to use arrays in a variety of ways, widening the options for
users. There have been many fixes to the core code as well as opcodes.
-- The Developers
## USER-LEVEL CHANGES
### New opcodes
- string2array is a variant of fillarray with the data coming from a
string of space separated values.
- nstrstr returns the name string of an instrument number or an empty
string if the number does not refer to a named instrument.
- ntof converts notename to frequency at i- and k-time.
- ampmidicurve is a new opcode that maps an input MIDI velocity number to an
output gain factor with a maximum value of 1, modifying the output gain by
a dynamic range and a shaping exponent.
### New Gen and Macros
### Orchestra
- The consistency of kr, sr and ksmps reworked especially when there
is overriding.
- corrected default 0bdfs usage.
- Resolving the path for #include files reworked to be more liberal.
- reading and writing to multidimensional arrays was very wrong. This
is now correct.
- Better checking for unknown array types (issue #1124)
- In all array operations the size of an array is determined at init time and no
allocation happens at perf time.
- array arithmetic now respects --sample-accurate.
### Score
- The characters n and m could erroneously get ignored in scores.
- Resolving the path for #include files reworked to be more liberal.
- After an error the backtrace of files and macros incorrectly read
the information for orchestra rather than scores; fixed.
- The end of an r (repeated) section was not always correct.
- Nested {} parts of a score could lead to errors.
- After an s statement a newline was required; no longer needed.
- The {} score loops have been reworked to allow macros and expressions
in the loop count.
### Options
- The new option --use-system-sr set the sample rate to the hardware/system value.
### Modified Opcodes and Gens
- Sending failure in OSC is now a warning rather than an error.
- passign can now have an array as the target.
- version of bpf/bpfcos added to allow points defined via arrays.
- grain can now use tables of any size, which was only a power of 2.
- Changing colours in FL widgets now works (it previously did not redraw
the colour).
- fillarray can read from a file of values overcoming the argument
limit.
- sumarray now works for audio arrays as well as for scalar values.
- assignment of an audio value to an audio array now works.
- monitor was broken in the array form.
- gendyc now respects sample-accurate mode.
- mtof and ftom now have array versions.
- sc_lag and sc_lagud now use the first k- or a-rate input when no
initial value is given.
- printarray now works for string arrays.
- changed2 now works for strings.
- diskgrain, syncgrain and syncloop now can do sample rate scaling.
- GEN01 correctly reads raw audio files when requested.
- ftaudio can now take two additional optional argument`s for the start
and end of the table data being written to file.
- sensekey recoded in the 'key down' mode.
- loscilx can return an audio array.
- schedule opcode reports undefined instruments in all cases.
- event_i now accepts tagged instrument numbers.
- printarray treats %d correctly.
- beadsynt now works with i arrays as well as k arrays as in the manual.
### Utilities
- hetro had a number of fixes and improvements.
### Frontends
- Belacsound:
- CsoundQt:
### General Usage
- There have been a number of improvements in the semantics for multicore;
most of these are corrections with a few efficiency gains.
- There is a maximum number of arguments for an opcode which was
neither explicit nor policed. Attempts to use too many arguments
now gives a syntax error.
## Bugs Fixed
- FLgetsnap fixed.
- directory fixed regarding file extensions.
- FLsetText reused a string incorrectly which led to incorrect values.
- fmb3 failed to initialise the lfo rate in some cases.
- ftaudio at i-rate was totally broken.
- following a reinit printks could be skipped; fixed
- printks fixed so it prints at correct times.
- tabrowlin and getrowlin would calculate wrong size under certain conditions.
# SYSTEM LEVEL CHANGES
- Hash Table implementation modified to expand on load for better performance
when map contains large number of entries
### System Changes
- plugin GEN functions can have a zero length, but the code must check
for this and act accordingly. This allows for deferred allocations.
- schedule reports undefined instr numbers/names and continues, rather than
causing an error.
- allow multiple calls to midi out controls.
### Translations
### API
- find_opcode_new and find_opcode_exact now exposed in API.
- After a reset a default message string callback handle is configured.
- New function csoundSystemSr added to the API to read hardware-imposed sample rate.
### Platform Specific
- WebAudio: libsndfile now compiled with FLAC and OGG support.
- iOS
- Android
- Windows
- In both orchestra and score the path tracking of #include expects a \ separator.
- MacOS
- GNU/Linux
- Haiku port now available.
- Bela
- allow analog in and out with different channel numbers.
==END==
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