{"id":437,"date":"2018-04-13T10:55:26","date_gmt":"2018-04-13T10:55:26","guid":{"rendered":"https:\/\/antonyhallphd.wordpress.com\/?page_id=437"},"modified":"2018-04-13T10:55:26","modified_gmt":"2018-04-13T10:55:26","slug":"transmitting-and-receiving-electromagnetic-fields","status":"publish","type":"page","link":"https:\/\/antonyhall.net\/blog\/transmitting-and-receiving-electromagnetic-fields\/","title":{"rendered":"Transmitting and reciving Electromagneic fields"},"content":{"rendered":"

Activity resource for Remapping senses\u00a0Workshop<\/a><\/strong><\/p>\n

Using a coil or loop of enamelled wire in place of a speaker creates a transmitting electromagnetic field. This\u00a0could be concealed into an object or placed around a space to create a distributed soundscape that\u00a0can\u00a0be interacted with.<\/p>\n

We can interact with these sounds using another coil, antenna attached to an amplifier or a guitar pickup coil. So the\u00a0soundscape can be experienced through personal headphones or mobile speakers, as the user handles the objects or moves through or navigates the space.<\/p>\n

In this\u00a0activity, we experiment with this idea, create objects spaces and sounds to be interacted with. We use\u00a0mini Guitar amps\u00a0as mobile sound systems. Create coils and amplification circuits.<\/p>\n

How does this\u00a0affect the\u00a0choices we make when considering the objects we make? What are performative possibilities?
\n
\nTransmitter Materials
\n<\/strong>Copper wire SWG 33 \/ .25mm enamelled copper wire \/ 500g \/ Solderable
\n8x 12w Audio Amplifiers 4ohm
\n8x Channel Sound Card
\nCables and adaptors to connect<\/p>\n

Receiver<\/strong>
\nSound recorder \/ portable\u00a0speaker [mini guitar amp]\nGuitar pick up coil
\nOr Create a DIY version using an LM386 chip and even\u00a0a DIY coil using the same enamelled wire<\/p>\n

Transmitter Loops.<\/strong>
\nLoops of wire can be coiled or spanned around\u00a0space. Based on the amplifier spec – in this case,\u00a0it is designed\u00a0for a ‘4ohm’ speaker. To replicate this a similar resistance need to be created\u00a0either using resistors [with high voltage spec] or a long length of wire\/ the resistance\u00a0should be measured\u00a0using a multimeter.<\/p>\n

Power.<\/strong> These amps can power a speaker\u00a0well using a 9v battery – but driving a coil need more power and amps. A power supply gets better results.<\/p>\n

Tasks<\/strong>
\na\/ Create soundtracks.
\nb\/ Consider how to use this concept to transform\u00a0space \/ create interactive sound \/ performance.
\nc\/ create and experiment<\/p>\n

Resources:<\/strong><\/p>\n

 <\/p>\n

\"m032s_01\"
Kemo Audio Amplifier 9-16v<\/a><\/figcaption><\/figure>\n
\"magnetic-fig5\"
DIY audio Loop Project\u00a0
https:\/\/www.jameco.com\/Jameco\/workshop\/diy\/magnetic.html<\/a><\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Activity resource for Remapping senses\u00a0Workshop Using a coil or loop of enamelled wire in place of a speaker creates a transmitting electromagnetic field. This\u00a0could be concealed into an object or placed around a space to create a distributed soundscape that\u00a0can\u00a0be interacted with. We can interact with these sounds using another coil, antenna attached to an…<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"_links":{"self":[{"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/pages\/437"}],"collection":[{"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/comments?post=437"}],"version-history":[{"count":0,"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/pages\/437\/revisions"}],"wp:attachment":[{"href":"https:\/\/antonyhall.net\/blog\/wp-json\/wp\/v2\/media?parent=437"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}