My final project was an interactive mask that have the functions of voice reduction and decibel measuration.
The mask is equipped with a microphone connected with a led series, to measure the waves intensity and transmit it to the leds, to allow us to understand the voice power.

A similar project was made in the 2008 by Kelly Dobson, it was the Scream Body. I think that a tool like that can be really useful for us.
Functions was almost the same, however one of my purpose was the compactness of the tool, even going to detriment of the absorption power. It was conceived for a domestic use, to take neighbours (and our privacy) safe from us!

My first prototype wasn't so compact as I managed but, in the future, I hope that can be upgraded with a smaller one!



Download files: Filter Female dxf, Filter Male dxf, Filter Ring dxf - Composites-A stl, Composites-B stl, Box - Schematic, Board, Program.

The "sound filter" was
concepted with a
reversed cone,
as the opposite
of a megaphone.
It have internal walls
in the opposite direction
of the sound waves
emitted by the voice
and the interior was
covered by an acoustic
insulation material.

Making: I start working on my final project on the 11° week, with input. In the thirteenth week I begun the study of analog/to digital sound imput, that was one of the hardest parts for me. In the fourteenth week I used composites technique to make the shell of my mask. To make the "sound filter" I used the 3D printer, so modelling the parts with Rhinoceros. On that part I worked hard to make piece that can be opened for cleaning and maintenance, so I made a structure composed by two parts jointed by a rubber band, and screwed togheter on a third part placed on the mask. The materials used probably wasn't the better for my purpose, but I do my best to let them work good.

Tools:
-Rhinoceros
-Photoshop
-3D Printing
-Composites
-Milling machine
-Dremel
-Scissors
-Glue
-Glass paper
-Acrylic colours

The making of:

The first research that I do was about the sound filter. I've thinked about different options, but I've chosen the one who seems bettef for simplicity and efficiency.
Because one of the purpose was the manteinience of the mask, I've studied two jointable parts, connecterd to the mask by screwing.



This is the process of 3D construction, using Rhinoceros.

The voice sensor have an external structure with a microphone that can be used inside or outside the mask. It have a led array who light on when the sounds get loud.
An hard part of the job was the materials, the composite and PLA dons't have much phono isolation. So I added rubber on the structure, doing my best to seal it.

As you can see, I made cavity around the two pieces to host rubber bands or similars. That have the function to allow the change of the internal isolation material, and allow the cleaning of the filter when its needed.

Assignment links: 3D scanning and printing, Input devices, Output devices, Composites, Networking and comunications.

Materials used:

- PLA
- Composites
- Wood
- Electronics
- Paper
- Felt
- Rubber
- Fabric

Obviously, despite of the video, the mask was made for an antistress function. This society will teach us with a policy of "goodness" and pacifism. However, sometimes, that can turn into a problem for us. Probably this tool can't resolve the problem, but I think it would help a lot in some situations.