Sound Embroidery

Textile Speakers

Research on different techniques to create speakers using textile techniques. The idea is to create a coil with fabric, cotton thread, enamelled copper wire, a magnet, an amplifier and external sound input (phone, mp3..)

This research was inspired by Hannah Peter Wilson experiments with fabric speakers http://www.kobakant.at/DIY/?p=2936

Different experiments to create coils:

Raphia, enamelled copper (1.25 mm).

Enameled Copper

Some experiments were made with the couching embroidery technique, inspired by the embroidery patterns of the Barmer tribe (Rajastan – India) who use gold threads embroidery techniques.

Gold embroidery, RajastanGold embroidery, Gujarat, Jat tribe

Experiments with a coil crochet technique.  Wool & soft copper wire from Karl Grimm (not Enamelled) ref: High Flex 3981 7×1Crochet coils

Experiments with a coil crochet technique blending wool and cooper thread.

Yarn: wool & soft copper wire from Karl Grimm (not Enamelled) ref: High Flex 3981 7×1

Coil made of conductive fabric ironed on fabric

Materials:

How sound works:

https://science.howstuffworks.com/sound-info.html

Making a handcrafted coil:

How to

couched technique

Gold embroidery techniques:

Amplification:

For the best results you need a class T amplifier

Jesse Seay knitted speaker tutorial explained here: http://www.instructables.com/id/Hard-Drive-Magnet-Speakers/?ALLSTEPS#step4

-> Be careful that the copper doesn’t heat up too much!

For a more compact and wearable amplifier the LM386 op amp gave very good results using a gain of 200.

LM386 Data Sheet Shematics:

Gerber & Fritzing files here

Tips:

<iframe width="560" height="315" src="https://www.youtube.com/embed/SofKnJ9XJuI" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

<iframe width="560" height="315" src="https://www.youtube.com/embed/GjvtFsh_iMc" frameborder="0" allow="autoplay; encrypted-media" allowfullscreen></iframe>

Sources:

http://www.kobakant.at/DIY/?p=2936

http://v2.nl/lab/projects/betaknit-research (knitted speakers)

http://www.instructables.com/id/Hard-Drive-Magnet-Speakers

http://www.instructables.com/id/Paper-Speakers-1/

Sound and Patterns

Sound Embroidery

Workshops Textile Electro