Visualizing Waveforms

About the project

This exploratory learning project was inspired by a posting by a YouTube video by Desktop Makes who were examining how to create the physical visual representation of audio waveforms. 

Instructional Technology Service staff and their student workers (aka mLabbies) chose a few inspirational quotes, and found an audio recording of each quote. Afterwards, 3d models of the waveform were created from the quotes, then printed out.

The quotes

Learning outcomes

mLabbies used a variety of different software programs to create and modify 3d models, which would deepen their knowledge and experience computer aided design (CAD) and modeling practices for 3d printing.

The mlabbies also expanded their expertise with using the 3d printers in the Digital Fabs space here at Reed College.

The (exploratory) process

The project explored how to visually represent a waveform using some of the technologies available in the Digital Fab space here at= Reed College, which included a laser printer and 3d printers. The Desktop Makes video provided one approach to represent an audio waveform as the students explored how to create and physically display the models. 

example of bad 3d print

During the process, one of the students used the SciPy and DrawSVG Python libraries to generate waveform images from audio in the desired style.

Another student created a print-in-place hinged 3d model that held the quotes.

3d print of model with hinge

While working with an Ultimaker S5 and Bambu printer, the students were able to explore how to create 3d models that could be printed in different colors. 

Along the way, as many who have explored 3d printing, a few technical issues came up.

failed print image 4

Filament didn’t stick to the printing bed. Different 3d material was used that required different print settings. Printing a moving hinge required test prints and modifications to the 3d model.

failed print image 1

And printing small text in a 3d format can be a bit challenging; mLabbies explored having the text embossed on a surface, or embedded into a surface, both which required separate ways to design and print the 3d model.

another 3d print example with text

Dual Filament Printing

Printing made with two different colored filaments (model can be found here: https://www.thingiverse.com/thing:329436)

Both 3D printers in the fabrication lab come equipped with dual filament printing heads that allow for a variety of effects including printing in multiple colors, multiple transparencies, or printing with dissolvable supports. Here are the steps required to make use of this process.

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Customizing a 3d Model

A classics professor was retiring from Reed College, and as a parting gift, a bust of Homer (one of his favorite Greek poets) was to be made at the Digital Fabs, a space located in the Reed physics building with 3d printing capabilities. After consulting with the classics department, I planned on finding a 3d model of Homer, then I wanted to alter the model, adding an engraving with Greek text of the Iliad to the base.

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