RE: Input from an Electric Violin made by a 3D Printer...

silver2row · Mar 25, 2021

Seth here and Hello...yes sir. I understand partially what you are saying here as I do not have a long standing relationship w/ music-tech.

Wooden sounds, heh? Okay...that is a start. I feel like the Maker Faire, which was cancelled until recently, had some disconnect w/ reaching out.

So, I am learning a lot in a short period to produce an effect from BELA from the violin.

Seth

P.S. And right, the sound(s) are not meant to process nothing. I expect the sound to be distorted in some way via BELA. BELA needs to merely exchange and process the data it receives to perform functions on the data to turn it into a different sound. Okay! I am w/ you in this context. How will it modify the sound? "How" in this question is where I am at now.

silver2row · Mar 28, 2021

giuliomoro

Hello...I am receiving a bunch of errors. My first error was that /libraries/Biquad/QuadBiquad.h does not exist.

So, I found it and added it in the file system. I received so many errors that I gave up. Boo to me!

Anyway, is there an updated image you all provide to handle the /QuadBiquad.h file?

Seth

P.S. If it matters, here are the errors:

In file ./libraries/Biquad/QuadBiquad.h: expected '(' for function-style cast or type construction column: 34, line: 11
In file ./libraries/Biquad/QuadBiquad.h: expected member name or ';' after declaration specifiers column: 35, line: 11
In file ./libraries/Biquad/QuadBiquad.h: use of undeclared identifier 'BiquadCoeff' column: 21, line: 33
In file ./libraries/Biquad/QuadBiquad.h: explicit instantiation of non-template class 'BiquadCoeffT' column: 23, line: 75
use of undeclared identifier 'BiquadCoeff'; did you mean 'BiquadCoeffT'? column: 9, line: 15
incomplete type 'BiquadCoeffT' named in nested name specifier column: 9, line: 15
use of undeclared identifier 'BiquadCoeff'; did you mean 'BiquadCoeffT'? column: 34, line: 25
incomplete type 'BiquadCoeffT' named in nested name specifier column: 34, line: 25
use of undeclared identifier 'BiquadCoeff'; did you mean 'BiquadCoeffT'? column: 34, line: 29
incomplete type 'BiquadCoeffT' named in nested name specifier column: 34, line: 29
no member named 'filters' in 'QuadBiquad' column: 31, line: 40
expected function body after function declarator column: 51, line: 72
In file included from /root/Bela/projects/Making_Wood_Sounds/render.cpp:11:
./libraries/Biquad/QuadBiquad.h:11:16: error: use of undeclared identifier 'BiquadCoeffT'
    std::array<BiquadCoeffT<float>, 4> filters;
               ^
./libraries/Biquad/QuadBiquad.h:11:34: error: expected '(' for function-style cast or type construction
    std::array<BiquadCoeffT<float>, 4> filters;
                            ~~~~~^
./libraries/Biquad/QuadBiquad.h:11:35: error: expected member name or ';' after declaration specifiers
    std::array<BiquadCoeffT<float>, 4> filters;
                                  ^
./libraries/Biquad/QuadBiquad.h:33:21: error: use of undeclared identifier 'BiquadCoeff'
    int setup(const BiquadCoeff::Settings& settings);
                    ^
./libraries/Biquad/QuadBiquad.h:75:23: error: explicit instantiation of non-template class 'BiquadCoeffT'
extern template class BiquadCoeffT<float>;
                      ^           ~~~~~~~
/root/Bela/projects/Making_Wood_Sounds/render.cpp:15:9: error: use of undeclared identifier 'BiquadCoeff'; did you mean 'BiquadCoeffT'?
        BiquadCoeff::Settings s = {
        ^~~~~~~~~~~
        BiquadCoeffT
./libraries/Biquad/QuadBiquad.h:75:23: note: 'BiquadCoeffT' declared here
extern template class BiquadCoeffT<float>;
                      ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:15:9: error: incomplete type 'BiquadCoeffT' named in nested name specifier
        BiquadCoeff::Settings s = {
        ^~~~~~~~~~~~~
./libraries/Biquad/QuadBiquad.h:75:23: note: forward declaration of 'BiquadCoeffT'
extern template class BiquadCoeffT<float>;
                      ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:25:34: error: use of undeclared identifier 'BiquadCoeff'; did you mean 'BiquadCoeffT'?
                        s.type = BiquadCoeff::lowpass;
                                 ^~~~~~~~~~~
                                 BiquadCoeffT
./libraries/Biquad/QuadBiquad.h:75:23: note: 'BiquadCoeffT' declared here
extern template class BiquadCoeffT<float>;
                      ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:25:34: error: incomplete type 'BiquadCoeffT' named in nested name specifier
                        s.type = BiquadCoeff::lowpass;
                                 ^~~~~~~~~~~~~
./libraries/Biquad/QuadBiquad.h:75:23: note: forward declaration of 'BiquadCoeffT'
extern template class BiquadCoeffT<float>;
                      ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:29:34: error: use of undeclared identifier 'BiquadCoeff'; did you mean 'BiquadCoeffT'?
                        s.type = BiquadCoeff::highpass;
                                 ^~~~~~~~~~~
                                 BiquadCoeffT
./libraries/Biquad/QuadBiquad.h:75:23: note: 'BiquadCoeffT' declared here
extern template class BiquadCoeffT<float>;
                      ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:29:34: error: incomplete type 'BiquadCoeffT' named in nested name specifier
                        s.type = BiquadCoeff::highpass;
                                 ^~~~~~~~~~~~~
./libraries/Biquad/QuadBiquad.h:75:23: note: forward declaration of 'BiquadCoeffT'
extern template class BiquadCoeffT<float>;
                      ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:40:31: error: no member named 'filters' in 'QuadBiquad'
                        bs[b].filters[q].setup(s);
                        ~~~~~ ^
/root/Bela/projects/Making_Wood_Sounds/render.cpp:72:51: error: expected function body after function declarator
void cleanup(BelaContext *context, void *userData)
                                                  ^
13 errors generated.
make: *** [/root/Bela/projects/Making_Wood_Sounds/build/render.o] Error 1

giuliomoro · Mar 28, 2021

silver2row Anyway, is there an updated image you all provide to handle the /QuadBiquad.h file?

You should update your Bela code using the procedure here. That should fix most of the above.

silver2row · Mar 28, 2021

giuliomoro

You were right. The update_board script did it!

Seth

silver2row · Mar 29, 2021

giuliomoro

Hello,

I got my 3D Printed violin to make sound from you and your projects resources via BELA and a small tweeter speaker. Anyway, I will be making a video and post it soon to Hackster.io for all of the people still interested in Music, BELA, and hardware along w/ the BBB.

Thank you, sir. Now, I can try all sorts of things w/ it.

Seth

P.S. I will get the link to the video soon once the video uploads.

silver2row · Mar 29, 2021

Here is the mildly sound-a-rific violin being played on a tweeter for testing w/ the libraries you all have made.

Seth

AndyCap · Apr 1, 2021

Hi Seth,

That video isn't playing here.

Also do you have some pics of the violin. I have difficulty printing the simplest thing on my printer, the idea of a 3d printed violin is mad!

Remork · Apr 2, 2021

video plays fine?
violin looks sweet!

sound may need some work, hah.
good luck!

silver2row · Apr 4, 2021

Hello Remork and AndyCap ,

I can view the video. It is a f-f-fiddle but in 3/4 size. The fellow that produced the files are all online when one searches for f-f-fiddle.

Also, yes. I need to work on the sound. The bow will not be rosined by me firstly. So, I should get a real violin player or a child that is willing to try at the Faire to rosin the bow so they may play.

Seth

P.S. Thank you! I will need it. I am no C++ expert as most of you can already tell, plus I am not a real violin student, and I love music (all kinds). Soothing to erratic and chaotic to melodic, all suits my needs of ear hole consumption!

silver2row · Apr 5, 2021

AndyCap

Hello, I just reread what you typed. I kind of said already what to research on this effort but...

Here: https://openfabpdx.com/fffiddle/

That will bring you directly to the engineer who made it and other products he produces. Most of it is open source but some are a bit complicated, i.e. so he is trying to produce efforts outside of plain-Jane, Open Source.

Seth

AndyCap · Apr 5, 2021

Thanks for that link I will read through it...

All I get on the video here on safari on a mac is a play button that doesn't work!

Remork · Apr 5, 2021

video works fine on firefox.

giuliomoro · Apr 5, 2021

@AndyCap the video is hosted on Google Drive. Direct link without embedding: https://drive.google.com/file/d/1uDotujwzqAX7UJptbvx6UvI87oq4ngqQ/view.

silver2row · Apr 8, 2021

AndyCap

Sir,

You are not missing much. I slowly pick the violin to make sounds instead of use the rosined bow.

Seth

P.S. But...things are coming along. I will post another one soon.