@oid said:

@Moothart In this case it does not matter if it is the left or the right inlet and it would work the same. The general convention when something is patched as I did is that the connection does not cross inlets/outlets and is connected to the first it comes to since anything else would be ambiguous. Vast majority of those who patch like this, follow this convention.

Going to the right inlet it loads 0 into the float, than the [until] is banged sending [get 0 1( to [list store], the [until] then bangs until the [list store] gets an out of bounds get which sends a bang out of its right outlet to the left inlet of [until] which stops the [until]. Going to the left inlet the [f ] immediately outputs a zero which sends the [get 0 1( message to [list store], adds 1 to it and sends 1 to the right inlet of [f ], the [until] then starts and sends 1 out giving us [get 1 1(. Only difference between the two is that the [until] will bang one time less if you send [0( to the left inlet than it would if you send it to the right.

Good hint! THX

Is there a chance to see the change of the value in the moment, when the line passes a number of the [2 5 6 7 10]? I hope I get it right here in rebuilding the latest patch.
Maybe there is a chance to build in a number box representing the actual number for so long, until the next number from [line] is passed, being represented in that number box then. The result would be showing adjacent numbers from 2 5 6 7 10, each occuring for a specific amount of time depending on the line object passing that numbers one after another...

@Moothart In this case it does not matter if it is the left or the right inlet and it would work the same. The general convention when something is patched as I did is that the connection does not cross inlets/outlets and is connected to the first it comes to since anything else would be ambiguous. Vast majority of those who patch like this, follow this convention.

Going to the right inlet it loads 0 into the float, than the [until] is banged sending [get 0 1( to [list store], the [until] then bangs until the [list store] gets an out of bounds get which sends a bang out of its right outlet to the left inlet of [until] which stops the [until]. Going to the left inlet the [f ] immediately outputs a zero which sends the [get 0 1( message to [list store], adds 1 to it and sends 1 to the right inlet of [f ], the [until] then starts and sends 1 out giving us [get 1 1(. Only difference between the two is that the [until] will bang one time less if you send [0( to the left inlet than it would if you send it to the right.

Hi again,
a new problem...
While, after having worked with 2 video monitors, I was trying to correct the windows subpatch positions via text, putting the canvas values to 0 0... I have probably involuntarily messed up something else in my patch. Now the patch doesn't open anymore, and it causes PD to crash! Is there any way to correct the patch via text... to correct the mistake that causes the crash? I don't know how or where to start to debug this. Any help super appreciated, stefano

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@Spyros said:

1. In the abstraction I replaced all the inlets to [receive] and [send] from the main, the [inlet~]s to [receive~] and [send~] from the main and the [outlet~] to [dac~]

Almost right. You convert the inlets to [receive] but in main you don't [send] to them, you send a message to the left-most inlet of [pd~] prefixed with the name of the receive. So if you originally had an inlet that accepted the message [go bears( and converted that to a [receive cheers], you would send the message [cheers go bears( to the left-most inlet of [pd~].

Similarly, you can't [send~] in main to a [receive~] in the subprocess patch. In the subprocess patch you replace all [inlet~] with [adc~] and in main you configure [pd~] ninsig to match the number of adc~ channels. Those channels become inlet~s on the [pd~] object itself.

2. in the main I created [pd~] and I am sending a message <pd~ start pd~-button.pd> calling the abstraction button.pd. But I get an error: "pd~-button.pd: can't open" (in a separate instance of Pd). The weird thing is that when I go to help of [pd~] and click on the message <pd~ start pd~-subprocess.pd> I don't get the error when I copy and past the help in my main.pd I get an error: "pd~-subprocess.pd: can't open".

The message should contain the name of your abstraction, "button.pd" not "pd~-button.pd". In the help example, the name of the subprocess patch has that "pd~-" prefix, but that's just how they chose to name it.

3. In the button abstraction I have more abstractions. Will they run in the new separate instance of Pd as well?

Yes, provided the Pd subprocess can find them. That's what failed in 2)--you copied the main patch in help but didn't move the subprocess patch to your local directory.

Here's another example you can study: two subprocesses.zip

hi everyone!

I'm trying to run the patch "Ambisonic_2d_example.pd" from the iem_ambi external. While trying to get it to run, I made some changes to the declare statement. You can find the code below..

I installed the externals needed for this patch through deken and I also set the "-lib iemlib" startup flag in PD.

Unfortunately I get the following errors. As you can see PD fails to create some objects (e.g. fadtodb, rbpq, mull~, dsp). These objects seem to all come from the iemlib which is loaded successfully. I have also checked the /externals/iemlib directory.. the four mentioned object-patches are there.

I am running PD on a VM running Debian 11.7 on a M1 MacBook Pro.

I have been trying to solve this for a couple of hours now.. Does anyone know why it's not working?

iemlib (1.22-1) library loaded!   (c) Thomas Musil Jul  7 2023 : 18:09:42
   musil@iem.at iem KUG Graz Austria
iem_ambi (1.21.1) library loaded!   (c) Thomas Musil Jul 18 2023 : 11:42:00
   musil@iem.at iem KUG Graz Austria

iemmatrix 0.3.3
    objects for manipulating 2d-matrices
    (c) 2001-2015 iem
        IOhannes m zmölnig
        Thomas Musil
        Franz Zotter
    compiled Jul 18 2023 : 22:25:45

iemlib (1.22-1) library loaded!   (c) Thomas Musil Jul  7 2023 : 18:09:42
   musil@iem.at iem KUG Graz Austria

    ♡♡♡
    ♡ the zexy external  2.4.2
    ♡ (c) 1999-2023 IOhannes m zmölnig
    ♡       forum::für::umläute
    ♡       iem  @  kug
    ♡  compiled  Jul  7 2023
    ♡ send me a 'help' message
    ♡♡♡

matchbox: OSC-pattern matching code (c) Matt Wright, CNMAT
iemgui (1.21-1) library loaded!   (c) Thomas Musil Sep 13 2022 : 19:34:09
   musil@iem.at iem KUG Graz Austria
 dsp
... couldn't create
 rbpq2~ 1000 2 100
... couldn't create
 mull~ 1 100
... couldn't create
 fadtodb
... couldn't create
matrix_inverse nonsingular

modified_Ambisonic_2d_example.pd:

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#X declare -stdlib /home/amir/Documents/Pd/externals/iem_ambi -stdlib
/home/amir/Documents/Pd/externals/iemmatrix -stdlib /home/amir/Documents/Pd/externals/iemlib
-stdlib /home/amir/Documents/Pd/externals/zexy -stdlib /home/amir/Documents/Pd/externals/iemgui
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270 \, 8 315;
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@KMETE said:

Only one small issue I can solved with [onebang] is that the right outlet of play~ outputting many bangs at end instead of one and that could make problems(?)

I noticed that and logged a bug with cyclone for it.

However it won't cause a problem here.

There is a big difference between hot and cold inlets. A hot inlet produces a result at an outlet: 50 bangs to a hot inlet = 50 results. But in this case, the bang is sending a symbol only to a cold inlet. One message to a cold inlet = change in object's state, but no result. 50 messages to a cold inlet = change in object's state, but no result. So in this context it doesn't matter: the cold inlet will not produce redundant actions downstream because nothing will happen at the outlet.

hjh

I wanted to build PD on Windows 10 to get ASIO support. I failed when I used the "Source" files from the PD website. I succeeded when I used source that I cloned from Github. I followed the same instructions from the wiki both when I failed and when I succeeded. (They are the same as in the manual, just a little more concise.)

I am sharing below my terminal output from the failed build attempts from the downloaded source code (the tar.gz file). Some of these messages suggest that there might be errors in the makefiles. I don't know anything about makefiles, so I can't really interpret the errors. But I did want to pass them along, in case a developer might find them useful. Here you go:

bhage@LAPTOP-F1TU0LRH MINGW64 /c/Users/bhage/Downloads/pd-0.51-4
$ ./autogen.sh
libtoolize: putting auxiliary files in AC_CONFIG_AUX_DIR, 'm4/config'.
libtoolize: linking file 'm4/config/config.guess'
libtoolize: linking file 'm4/config/config.sub'
libtoolize: linking file 'm4/config/install-sh'
libtoolize: linking file 'm4/config/ltmain.sh'
libtoolize: putting macros in AC_CONFIG_MACRO_DIRS, 'm4/generated'.
libtoolize: linking file 'm4/generated/libtool.m4'
libtoolize: linking file 'm4/generated/ltoptions.m4'
libtoolize: linking file 'm4/generated/ltsugar.m4'
libtoolize: linking file 'm4/generated/ltversion.m4'
libtoolize: linking file 'm4/generated/lt~obsolete.m4'
configure.ac:166: warning: The macro `AC_LIBTOOL_DLOPEN' is obsolete.
configure.ac:166: You should run autoupdate.
aclocal.m4:8488: AC_LIBTOOL_DLOPEN is expanded from...
configure.ac:166: the top level
configure.ac:166: warning: AC_LIBTOOL_DLOPEN: Remove this warning and the call to _LT_SET_OPTION when you
configure.ac:166: put the 'dlopen' option into LT_INIT's first parameter.
../autoconf-2.71/lib/autoconf/general.m4:2434: AC_DIAGNOSE is expanded from...
aclocal.m4:8488: AC_LIBTOOL_DLOPEN is expanded from...
configure.ac:166: the top level
configure.ac:167: warning: The macro `AC_LIBTOOL_WIN32_DLL' is obsolete.
configure.ac:167: You should run autoupdate.
aclocal.m4:8523: AC_LIBTOOL_WIN32_DLL is expanded from...
configure.ac:167: the top level
configure.ac:167: warning: AC_LIBTOOL_WIN32_DLL: Remove this warning and the call to _LT_SET_OPTION when you
configure.ac:167: put the 'win32-dll' option into LT_INIT's first parameter.
../autoconf-2.71/lib/autoconf/general.m4:2434: AC_DIAGNOSE is expanded from...
aclocal.m4:8523: AC_LIBTOOL_WIN32_DLL is expanded from...
configure.ac:167: the top level
configure.ac:168: warning: The macro `AC_PROG_LIBTOOL' is obsolete.
configure.ac:168: You should run autoupdate.
aclocal.m4:121: AC_PROG_LIBTOOL is expanded from...
configure.ac:168: the top level
configure.ac:182: warning: The macro `AC_HEADER_STDC' is obsolete.
configure.ac:182: You should run autoupdate.
../autoconf-2.71/lib/autoconf/headers.m4:704: AC_HEADER_STDC is expanded from...
configure.ac:182: the top level
configure.ac:213: warning: The macro `AC_TYPE_SIGNAL' is obsolete.
configure.ac:213: You should run autoupdate.
../autoconf-2.71/lib/autoconf/types.m4:776: AC_TYPE_SIGNAL is expanded from...
configure.ac:213: the top level
configure.ac:235: warning: The macro `AC_CHECK_LIBM' is obsolete.
configure.ac:235: You should run autoupdate.
aclocal.m4:3879: AC_CHECK_LIBM is expanded from...
configure.ac:235: the top level
configure.ac:276: warning: The macro `AC_TRY_LINK' is obsolete.
configure.ac:276: You should run autoupdate.
../autoconf-2.71/lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
m4/universal.m4:14: PD_CHECK_UNIVERSAL is expanded from...
configure.ac:276: the top level
configure.ac:168: installing 'm4/config/compile'
configure.ac:9: installing 'm4/config/missing'
asio/Makefile.am: installing 'm4/config/depcomp'

bhage@LAPTOP-F1TU0LRH MINGW64 /c/Users/bhage/Downloads/pd-0.51-4
$ autoupdate
configure.ac:182: warning: The preprocessor macro `STDC_HEADERS' is obsolete.
  Except in unusual embedded environments, you can safely include all
  ISO C90 headers unconditionally.
configure.ac:213: warning: your code may safely assume C89 semantics that RETSIGTYPE is void.
Remove this warning and the `AC_CACHE_CHECK' when you adjust the code.

bhage@LAPTOP-F1TU0LRH MINGW64 /c/Users/bhage/Downloads/pd-0.51-4
$ ^C

bhage@LAPTOP-F1TU0LRH MINGW64 /c/Users/bhage/Downloads/pd-0.51-4
$ ./configure
configure: loading site script /etc/config.site
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
checking for a race-free mkdir -p... /usr/bin/mkdir -p
checking for gawk... gawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking build system type... x86_64-w64-mingw32
checking host system type... x86_64-w64-mingw32
configure: iPhone SDK only available for arm-apple-darwin hosts, skipping tests
configure: Android SDK only available for arm-linux hosts, skipping tests
checking for as... as
checking for dlltool... dlltool
checking for objdump... objdump
checking how to print strings... printf
checking whether make supports the include directive... yes (GNU style)
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.exe
checking for suffix of executables... .exe
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether the compiler supports GNU C... yes
checking whether gcc accepts -g... yes
checking for gcc option to enable C11 features... none needed
checking whether gcc understands -c and -o together... yes
checking dependency style of gcc... gcc3
checking for a sed that does not truncate output... /usr/bin/sed
checking for grep that handles long lines and -e... /usr/bin/grep
checking for egrep... /usr/bin/grep -E
checking for fgrep... /usr/bin/grep -F
checking for ld used by gcc... C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe
checking if the linker (C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe) is GNU ld... yes
checking for BSD- or MS-compatible name lister (nm)... /mingw64/bin/nm -B
checking the name lister (/mingw64/bin/nm -B) interface... BSD nm
checking whether ln -s works... no, using cp -pR
checking the maximum length of command line arguments... 8192
checking how to convert x86_64-w64-mingw32 file names to x86_64-w64-mingw32 format... func_convert_file_msys_to_w32
checking how to convert x86_64-w64-mingw32 file names to toolchain format... func_convert_file_msys_to_w32
checking for C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe option to reload object files... -r
checking for objdump... (cached) objdump
checking how to recognize dependent libraries... file_magic ^x86 archive import|^x86 DLL
checking for dlltool... (cached) dlltool
checking how to associate runtime and link libraries... func_cygming_dll_for_implib
checking for ar... ar
checking for archiver @FILE support... @
checking for strip... strip
checking for ranlib... ranlib
checking command to parse /mingw64/bin/nm -B output from gcc object... ok
checking for sysroot... no
checking for a working dd... /usr/bin/dd
checking how to truncate binary pipes... /usr/bin/dd bs=4096 count=1
checking for mt... no
checking if : is a manifest tool... no
checking for stdio.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for strings.h... yes
checking for sys/stat.h... yes
checking for sys/types.h... yes
checking for unistd.h... yes
checking for vfork.h... no
checking for dlfcn.h... no
checking for objdir... .libs
checking if gcc supports -fno-rtti -fno-exceptions... no
checking for gcc option to produce PIC... -DDLL_EXPORT -DPIC
checking if gcc PIC flag -DDLL_EXPORT -DPIC works... yes
checking if gcc static flag -static works... yes
checking if gcc supports -c -o file.o... yes
checking if gcc supports -c -o file.o... (cached) yes
checking whether the gcc linker (C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe) supports shared libraries... yes
checking whether -lc should be explicitly linked in... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking whether stripping libraries is possible... yes
checking if libtool supports shared libraries... yes
checking whether to build shared libraries... yes
checking whether to build static libraries... yes
checking for gcc... (cached) gcc
checking whether the compiler supports GNU C... (cached) yes
checking whether gcc accepts -g... (cached) yes
checking for gcc option to enable C11 features... (cached) none needed
checking whether gcc understands -c and -o together... (cached) yes
checking dependency style of gcc... (cached) gcc3
checking for g++... g++
checking whether the compiler supports GNU C++... yes
checking whether g++ accepts -g... yes
checking for g++ option to enable C++11 features... none needed
checking dependency style of g++... gcc3
checking how to run the C++ preprocessor... g++ -E
checking for ld used by g++... C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe
checking if the linker (C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe) is GNU ld... yes
checking whether the g++ linker (C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe) supports shared libraries... yes
checking for g++ option to produce PIC... -DDLL_EXPORT -DPIC
checking if g++ PIC flag -DDLL_EXPORT -DPIC works... yes
checking if g++ static flag -static works... yes
checking if g++ supports -c -o file.o... yes
checking if g++ supports -c -o file.o... (cached) yes
checking whether the g++ linker (C:/msys64/mingw64/x86_64-w64-mingw32/bin/ld.exe) supports shared libraries... yes
checking dynamic linker characteristics... Win32 ld.exe
checking how to hardcode library paths into programs... immediate
checking whether make sets $(MAKE)... (cached) yes
checking whether ln -s works... no, using cp -pR
checking for grep that handles long lines and -e... (cached) /usr/bin/grep
checking for a sed that does not truncate output... (cached) /usr/bin/sed
checking for windres... windres
checking for egrep... (cached) /usr/bin/grep -E
checking for fcntl.h... yes
checking for limits.h... yes
checking for malloc.h... yes
checking for netdb.h... no
checking for netinet/in.h... no
checking for stddef.h... yes
checking for stdlib.h... (cached) yes
checking for string.h... (cached) yes
checking for sys/ioctl.h... no
checking for sys/param.h... yes
checking for sys/socket.h... no
checking for sys/soundcard.h... no
checking for sys/time.h... yes
checking for sys/timeb.h... yes
checking for unistd.h... (cached) yes
checking for int16_t... yes
checking for int32_t... yes
checking for off_t... yes
checking for pid_t... yes
checking for size_t... yes
checking for working alloca.h... no
checking for alloca... yes
checking for error_at_line... no
checking for fork... no
checking for vfork... no
checking for GNU libc compatible malloc... (cached) yes
checking for GNU libc compatible realloc... (cached) yes
checking return type of signal handlers... void
checking for dup2... yes
checking for floor... yes
checking for getcwd... yes
checking for gethostbyname... no
checking for gettimeofday... yes
checking for memmove... yes
checking for memset... yes
checking for pow... yes
checking for regcomp... no
checking for select... no
checking for socket... no
checking for sqrt... yes
checking for strchr... yes
checking for strerror... yes
checking for strrchr... yes
checking for strstr... yes
checking for strtol... yes
checking for dlopen in -ldl... no
checking for cos in -lm... yes
checking for CoreAudio/CoreAudio.h... no
checking for pthread_create in -lpthread... yes
checking for msgfmt... yes
checking for sys/soundcard.h... (cached) no
checking for snd_pcm_info in -lasound... no
configure: Using included PortAudio
configure: Using included PortMidi
checking that generated files are newer than configure... done
configure: creating ./config.status
config.status: creating Makefile
config.status: creating asio/Makefile
config.status: creating doc/Makefile
config.status: creating font/Makefile
config.status: creating mac/Makefile
config.status: creating man/Makefile
config.status: creating msw/Makefile
config.status: creating portaudio/Makefile
config.status: creating portmidi/Makefile
config.status: creating tcl/Makefile
config.status: creating tcl/pd-gui
config.status: creating po/Makefile
config.status: creating src/Makefile
config.status: creating extra/Makefile
config.status: creating extra/bob~/GNUmakefile
config.status: creating extra/bonk~/GNUmakefile
config.status: creating extra/choice/GNUmakefile
config.status: creating extra/fiddle~/GNUmakefile
config.status: creating extra/loop~/GNUmakefile
config.status: creating extra/lrshift~/GNUmakefile
config.status: creating extra/pd~/GNUmakefile
config.status: creating extra/pique/GNUmakefile
config.status: creating extra/sigmund~/GNUmakefile
config.status: creating extra/stdout/GNUmakefile
config.status: creating pd.pc
config.status: executing depfiles commands
config.status: executing libtool commands
configure:

    pd 0.51.4 is now configured

    Platform:             MinGW
    Debug build:          no
    Universal build:      no
    Localizations:        yes
    Source directory:     .
    Installation prefix:  /mingw64

    Compiler:             gcc
    CPPFLAGS:
    CFLAGS:               -g -O2 -ffast-math -funroll-loops -fomit-frame-pointer -O3
    LDFLAGS:
    INCLUDES:
    LIBS:                 -lpthread

    External extension:   dll
    External CFLAGS:      -mms-bitfields
    External LDFLAGS:     -s -Wl,--enable-auto-import -no-undefined -lpd

    fftw:                 no
    wish(tcl/tk):         wish85.exe
    audio APIs:           PortAudio ASIO MMIO
    midi APIs:            PortMidi


bhage@LAPTOP-F1TU0LRH MINGW64 /c/Users/bhage/Downloads/pd-0.51-4
$ make
CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh '/c/Useras/bhage/Downloads/pd-0.51-4/m4/config/missing' aclocal-1.16 -I m4/generated -I m4
configure.ac:170: error: AC_REQUIRE(): cannot be used outside of an AC_DEFUN'd macro
configure.ac:170: the top level
autom4te: error: /usr/bin/m4 failed with exit status: 1
aclocal-1.16: error: autom4te failed with exit status: 1
make: *** [Makefile:451: aclocal.m4] Error 1

bhage@LAPTOP-F1TU0LRH MINGW64 /c/Users/bhage/Downloads/pd-0.51-4
$ make app
CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh '/c/Users/bhage/Downloads/pd-0.51-4/m4/config/missing' aclocal-1.16 -I m4/generated -I m4
configure.ac:170: error: AC_REQUIRE(): cannot be used outside of an AC_DEFUN'd macro
configure.ac:170: the top level
autom4te: error: /usr/bin/m4 failed with exit status: 1
aclocal-1.16: error: autom4te failed with exit status: 1
make: *** [Makefile:451: aclocal.m4] Error 1

@Obineg said:

i would have found it more logically that inlet~ would only get activated when you connect something to it, since patching requires a recompile anyway.

the way it is you are creating a lot of signal connections for nothing for some abstraction designs.

A counterexample:

Let's say you're making a mid-side encoder abstraction: two signal inlet~'s (left and right), and a [+~] and [-~]. The left inlet~ goes into the left inlets of the two math operators; the right inlet~ goes into the operators' right inlets. So the adder produces the mid signal, and the difference operator produces the side.

Now you put the abstraction into another patch, and connect a signal to the abstraction instance's right inlet.

By your logic, the operators' left inlets should be deactivated. But the operators still need to calculate. (Passthrough isn't an option because, in this contrived example, the [-~] side signal should be phase inverted relative to the mid signal -- the [-~] must be doing 0 - R.) To calculate, the operators need two inputs.

At this point, software designers would have to weigh the CPU cost of passing zeros (arguably this is likely to be minimal) against the added complexity of maintaining active vs inactive connection states. Considering that it's easy to underestimate the maintenance impact of code complexity, it actually is a legit decision to accept a small CPU cost in exchange for more straightforward logic.

I don't find it strange at all.

hjh

Hi all, I'm trying to create an external that has one float inlet and a number of signal inlets corresponding to the creation argument. Something like [nfader 4] should have four signal inlets and one float inlet for the interpolation parameter.

Yes, I already found abstract-based solutions but dynamic patching is black magic to me so I'd rather code this in C with which I'm quite comfortable.

The problem is I thought I could have a t_inlet **inlets field in the object's struct and then allocate the inlets with the usual combo of (t_inlet **)malloc(n * sizeof(t_inlet *)) but apparently sizeof does not have access to _inlet (aliased to t_inlet) as it is an externally defined symbol.

Bottom line: all the examples I could think of that have arbitrary amounts of inlets (and outlets for that matter) are bondo from cyclone and pack from vanilla. I tried expr~ but its complexity is not really helping…

… pointers?

Don't know what to call this really. I put this together to prevent unwanted control changes after loading presets. A useful utility for hardware-controlled patches with presets.

-Inlet 1 passes control signal to the outlet.
-A bang to inlet 2 activates the temporary threshold/gate.

After activated, no control changes will pass through until a change that exceeds the threshold value is registered. (Relative to the control value at activation).

-(optional) Set threshold through inlet 3. Default is 10.

Example:
*Control signal through inlet 1 is at 50 when gate gets activated with a bang to inlet 2 (threshold set at default value, 10).
*Values of 41-59 will not pass through.
*A control signal <=10 or >=30 opens the gate.
*After the gate is opened, the control signal passes through until another bang is sent to inlet 2.
TemporaryThreshold.pd

If there is already an abstraction or external out there that does this in a better way please let me know

Noticed a possible source or errors, if the 'float-box' were to send its value to the hot inlet of the 'subtraction-box' before it does the cold inlet. Not a problem on my system but this might be safer with a trigger to make sure..
Cheers!