Two new (basic) ambisonic externals for Pd. They will form a large part of the new grambilib~ library I am finishing this semester, allowing a user to control angle and elevation using an audio-rate signal. They're largely based on the rg.ambi~ abstractions from 2015. All objects are written in the C programming language. Both externals collectively allow a user to use 1st (3d), 2nd (2d), and 3rd (2d) order ambisonics for mono, stereo, quad, 5.0, hexagonal, octagonal, and b-format cube (3d) array configurations.

Download Here

This is fantastic, wish I'd bumped into it earlier.
Has the library evolved since then? Is there a ambi to binaural decoder?
Many thanks!

@ricky cool font, how did you get that font?

Hello @Gabriel. I haven't done anything with the library in a good while, to be honest. It served a specific purpose/project and it never really progressed beyond that. There's plenty of binaural decoders out there so I didn't want to reinvent the wheel from that point of view. But, it might be nice to revisit these if people are interested. What are your needs? What project are you working on right now? Tell us more about that.

@4ZZ4 Regarding the font, if you're referring to the screenshot at the top of the thread (?) that's the abandoned Pd Extended version of the programming language.

Hi Ricky,

Many thanks for the quick reply, and for the great objects.
Indeed there are many wheels out there, but not that many fit my drive What appeals in yours is their simplicity. I’ve also been looking into IEM / ACRE as well as HOA / CREAM - do you know of others?

Until now I’ve been mostly using binaural or vbap for artistic setups and installations, but I’m now researching options for this project: https://broomx.com/. We basically need a multiple format decoder, but binaural rendering is a great addon.

In any case, it’s not all that urgent, but it’d be great to stay posted if you pick up sometime.

Thanks again!

Drop me an email: info@rickygraham.net

Maybe we can collaborate on the project.

@ricky said:

info@rickygraham.net

I just did that, thanks Ricky!

@ricky this looks awesome!

I'm getting this error when loading: fat file, but missing compatible architecture (have 'i386,x86_64', need 'arm64)

Is there a version that runs on Apple Silicon?

@bklindgren you could try to compile it yourself. It's on GitHub https://github.com/rickygraham/grambilib/tree/master
There's Makefile, but I guess you could use Pd's pd-lib-builder https://github.com/pure-data/pd-lib-builder

@alexandros

thanks for the suggestion! I"ve never compiled anything before, but I gave it a shot...

I'm getting this error in PD after loading the 3 compiled objects (6 files: grambidec.pd_darwin, grambidec.pd_darwin.o, grambiman.pd_darwin, grambiman.pd_darwin.o, grambipan.pd_darwin, grambipan.pd_darwin.o):

 load_object: Symbol "grambiman_setup" not found in "/Users/brianlindgren/Documents/Pd/externals/grambiman.pd_darwin"

Also make is generating a bunch of warnings:

++++ info: using Makefile.pdlibbuilder version 0.7.0
++++ info: using Pd API /Applications/Pd-0.54-1.app/Contents/Resources/src/m_pd.h
++++ info: making target all in lib grambidec~
++++ info: making grambidec.pd_darwin.o in lib grambidec~
cc -DPD -I "/Applications/Pd-0.54-1.app/Contents/Resources/src"  -DUNIX -DMACOSX -I /sw/include    -Wall -Wextra -Wshadow -Winline -Wstrict-aliasing -O3 -ffast-math -funroll-loops -fomit-frame-pointer -arch arm64 -mmacosx-version-min=10.6 -o grambidec.pd_darwin.o -c grambidec.c
grambidec.c:41:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:43:16: warning: unused variable 'APin2' [-Wunused-variable]
    t_sample  *APin2 =    (t_sample *)(w[3]);
               ^
grambidec.c:44:16: warning: unused variable 'APin3' [-Wunused-variable]
    t_sample  *APin3 =    (t_sample *)(w[4]);
               ^
grambidec.c:45:16: warning: unused variable 'APin4' [-Wunused-variable]
    t_sample  *APin4 =    (t_sample *)(w[5]);
               ^
grambidec.c:69:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:78:23: warning: variable 'sample2' set but not used [-Wunused-but-set-variable]
    t_sample sample1, sample2, sample3, sample4;
                      ^
grambidec.c:78:41: warning: variable 'sample4' set but not used [-Wunused-but-set-variable]
    t_sample sample1, sample2, sample3, sample4;
                                        ^
grambidec.c:102:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:113:41: warning: variable 'sample4' set but not used [-Wunused-but-set-variable]
    t_sample sample1, sample2, sample3, sample4;
                                        ^
grambidec.c:143:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:185:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:228:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:282:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambidec_tilde *x = (t_grambidec_tilde *)(w[1]);
                       ^
grambidec.c:351:37: warning: unused parameter 's' [-Wunused-parameter]
void *grambidec_tilde_new(t_symbol *s, int argc, t_atom *argv) //, t_floatarg test
                                    ^
grambidec.c:473:5: warning: performing pointer subtraction with a null pointer has undefined behavior [-Wnull-pointer-subtraction]
    CLASS_MAINSIGNALIN(grambidec_tilde_class, t_grambidec_tilde, APf);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Pd-0.54-1.app/Contents/Resources/src/m_pd.h:529:59: note: expanded from macro 'CLASS_MAINSIGNALIN'
    class_domainsignalin(c, (char *)(&((type *)0)->field) - (char *)0)
                                                          ^ ~~~~~~~~~
15 warnings generated.
++++ info: linking objects in grambidec.pd_darwin for lib grambidec~
cc -undefined suppress -flat_namespace -bundle  -arch arm64 -mmacosx-version-min=10.6  -o grambidec.pd_darwin grambidec.pd_darwin.o  -lc   
ld: warning: -undefined suppress is deprecated
ld: warning: -undefined suppress is deprecated
++++ info: making grambiman.pd_darwin.o in lib grambidec~
cc -DPD -I "/Applications/Pd-0.54-1.app/Contents/Resources/src"  -DUNIX -DMACOSX -I /sw/include    -Wall -Wextra -Wshadow -Winline -Wstrict-aliasing -O3 -ffast-math -funroll-loops -fomit-frame-pointer -arch arm64 -mmacosx-version-min=10.6 -o grambiman.pd_darwin.o -c grambiman.c
grambiman.c:64:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambiman_tilde *x = (t_grambiman_tilde *)(w[1]);
                       ^
grambiman.c:139:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambiman_tilde *x = (t_grambiman_tilde *)(w[1]);
                       ^
grambiman.c:226:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambiman_tilde *x = (t_grambiman_tilde *)(w[1]);
                       ^
grambiman.c:252:32: warning: variable 'sample3' set but not used [-Wunused-but-set-variable]
    t_sample sample1, sample2, sample3, sample4, sample10;
                               ^
grambiman.c:306:24: warning: unused variable 'x' [-Wunused-variable]
    t_grambiman_tilde *x = (t_grambiman_tilde *)(w[1]);
                       ^
grambiman.c:370:37: warning: unused parameter 's' [-Wunused-parameter]
void *grambiman_tilde_new(t_symbol *s, int argc, t_atom *argv)
                                    ^
grambiman.c:436:5: warning: performing pointer subtraction with a null pointer has undefined behavior [-Wnull-pointer-subtraction]
    CLASS_MAINSIGNALIN(grambiman_tilde_class, t_grambiman_tilde, APf);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Pd-0.54-1.app/Contents/Resources/src/m_pd.h:529:59: note: expanded from macro 'CLASS_MAINSIGNALIN'
    class_domainsignalin(c, (char *)(&((type *)0)->field) - (char *)0)
                                                          ^ ~~~~~~~~~
7 warnings generated.
++++ info: linking objects in grambiman.pd_darwin for lib grambidec~
cc -undefined suppress -flat_namespace -bundle  -arch arm64 -mmacosx-version-min=10.6  -o grambiman.pd_darwin grambiman.pd_darwin.o  -lc   
ld: warning: -undefined suppress is deprecated
ld: warning: -undefined suppress is deprecated
++++ info: making grambipan.pd_darwin.o in lib grambidec~
cc -DPD -I "/Applications/Pd-0.54-1.app/Contents/Resources/src"  -DUNIX -DMACOSX -I /sw/include    -Wall -Wextra -Wshadow -Winline -Wstrict-aliasing -O3 -ffast-math -funroll-loops -fomit-frame-pointer -arch arm64 -mmacosx-version-min=10.6 -o grambipan.pd_darwin.o -c grambipan.c
grambipan.c:423:5: warning: performing pointer subtraction with a null pointer has undefined behavior [-Wnull-pointer-subtraction]
    CLASS_MAINSIGNALIN(grambipan_tilde_class, t_grambipan_tilde, APf);
    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Pd-0.54-1.app/Contents/Resources/src/m_pd.h:529:59: note: expanded from macro 'CLASS_MAINSIGNALIN'
    class_domainsignalin(c, (char *)(&((type *)0)->field) - (char *)0)
                                                          ^ ~~~~~~~~~
1 warning generated.
++++ info: linking objects in grambipan.pd_darwin for lib grambidec~
cc -undefined suppress -flat_namespace -bundle  -arch arm64 -mmacosx-version-min=10.6  -o grambipan.pd_darwin grambipan.pd_darwin.o  -lc   
ld: warning: -undefined suppress is deprecated
ld: warning: -undefined suppress is deprecated
++++info: target all in lib grambidec~ completed

This is my Makefile:

# Makefile for mylib

lib.name = grambidec~

class.sources = grambidec.c grambiman.c grambipan.c

datafiles = grambilib-help.pd readme.md

include Makefile.pdlibbuilder

Any suggestion? Thanks again!

I'll check when I have time and get back. Should be simple.

@bklindgren I copied your makefile and compiled with the sources I have (I guess they are the same, since in GitHub they haven't changed in eight years), and [grambiman~] loads fine. I realized though the a [grambiman] compiles as well (no tilde), which indeed can't load. Did you forget to add the tilde character when you loaded the object?
I then changed the names of the source files, by adding the tilde character, and re-compiled. This time, only tilde objects were made. Maybe a bug of the makefile. I'll send to the Pd list or open an issue on GitHub.

thanks for your help! I got the objects compiled and loaded. it's been about two weeks so I'm a little fuzzy on what might have gone wrong before, but I modified a few file names & this is the makefile I ended up with:

# Makefile for mylib

lib.name = grambi~

class.sources = grambidec~.c grambiman~.c grambipan~.c

datafiles = grambilib-help.pd readme.md

include Makefile.pdlibbuilder

thanks again~ !!

Sorry. Totally missed this. All good?