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Stream Operator
Joined: Oct 13, 2007 Posts: 6221 Location: near Austin, Tx, USA
Audio files: 267
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Posted: Tue Feb 12, 2019 4:39 am Post subject:
"You're on the radio!" Subject description: Transmitting Lunetta Output Signals` |
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Hi, it's me (Les) again from the wayback machine with an oldie and a goodie...
I was imagining in the museum of ancient concepts, just thinking of ways to get audio from my next Lunetta and upon waking from sleep an idea registered: AM radio!
I doubt it's anything new since people have done all manner of things of the like, still I wonder if it could be fun to explore the topic a bit. The notion in this noggin is to design a Lunetta to have harmonics (or even main signal) around 1 MHz which is the AM broadcast region.
Then forget about jacks, speakers, cables or any kind of output thing, we can just use an AM radio for audio out. This has a creative simplicity that I find enjoyable. It also tingles the retro-lover in all of us.
For those (most I suppose) of us who already have Lunettas operating, a quick scan with an AM radio is likely to lead to some tasty listening treats. As for myself, I've got nothing but a boxful of chips and some time, so...
Cr38t!v!ty 4w4!t5!
Les _________________ "Let's make noise for peace." - Kijjaz |
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elektrouwe
Joined: May 27, 2012 Posts: 143 Location: Germany
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Posted: Wed Feb 13, 2019 2:01 am Post subject:
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I've done this @ camp festival 2005 in Stuttgart: standard Lunetta stuff, but the outputs connected to 47mH inductor coils, e.g. Bourns RLB0812-473KL, with series resistor, maybe a C, I don't remember. The whole thing was build on a plywood board, with the transmission coils spread on it. With a small handheld '70s AM Radio moving above the board I could perform a life mix. Had a lot of fun. |
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Inventor
Stream Operator
Joined: Oct 13, 2007 Posts: 6221 Location: near Austin, Tx, USA
Audio files: 267
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Posted: Wed Feb 13, 2019 4:11 pm Post subject:
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elektrouwe that sounds like just the thing! What did it sound like? I've got a slightly different plan but maybe my plan won't work, time will tell!
Les _________________ "Let's make noise for peace." - Kijjaz |
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PHOBoS
Joined: Jan 14, 2010 Posts: 5591 Location: Moon Base
Audio files: 705
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Posted: Wed Feb 13, 2019 5:33 pm Post subject:
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Nice timing as I have just started playing around a bit with an AM radio as an extra sound source. So I gave it a quick try to see if it would pick up
anything from my lunetta synths,.. That actually worked better than expected I didn't even have to use high frequencies or coils or long wires,
just keep the radio in the vicinity and you'll hear the bleeps. The nice thing with a radio is that you can play with the tuning to mix in actual radio
stations and you can move it around to change the reception.
I posted the recording here. _________________ "My perf, it's full of holes!"
http://phobos.000space.com/
SoundCloud BandCamp MixCloud Stickney Synthyards Captain Collider Twitch YouTube |
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CHRISKELLY
Joined: Apr 08, 2018 Posts: 103 Location: England
Audio files: 3
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Posted: Thu Feb 14, 2019 7:08 am Post subject:
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Sounds great! I like the idea of a lost transmission from a Lunetta being picked up by someone on the radio |
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JovianPyx
Joined: Nov 20, 2007 Posts: 1988 Location: West Red Spot, Jupiter
Audio files: 224
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Posted: Thu Feb 14, 2019 7:11 am Post subject:
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This brings me back to the 1970s when I used to go to the University of Illinois on Saturdays with my older brother to play with the IBM computers there. They had an IBM 360/195 (huge) on which I learned PL1 programming, but way in the back was an old IBM 1800. It was several racks wide and had no side panels. A student discovered that if they put an AM radio tuned the right way onto one of the 1800's shelves, the radio made weird noises. The student then discovered that he could make specific pitches depending on the instructions executed by the 1800. This developed far enough that he was able to put together a 2 part Bach piece (can't remember which piece) that played on the radio.
Keep experimenting with Lunettas this way, using AM you should be able to transmit musical frequencies with different timbres to the AM radio. I'd love to hear some examples of "wireless Lunettas". _________________ FPGA, dsPIC and Fatman Synth Stuff
Time flies like a banana. Fruit flies when you're having fun. BTW, Do these genes make my ass look fat? corruptio optimi pessima
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IGR
Joined: Aug 31, 2014 Posts: 19 Location: Brno
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Posted: Thu Feb 14, 2019 9:15 am Post subject:
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I remember that on the first programmable TI (58/59) calcs it was possible to write a tune picked by the AM radio. |
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blue hell
Site Admin
Joined: Apr 03, 2004 Posts: 24079 Location: The Netherlands, Enschede
Audio files: 278
G2 patch files: 320
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Posted: Thu Feb 14, 2019 2:35 pm Post subject:
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Decorated radio
Heard bits of the PHOBoS recordings, bit wild, and interesting .. will spend some more time on those later. _________________ Jan
also .. could someone please turn down the thermostat a bit.
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Grumble
Joined: Nov 23, 2015 Posts: 1294 Location: Netherlands
Audio files: 30
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Posted: Thu Feb 14, 2019 10:42 pm Post subject:
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LOL, this is exactly the sounds I try very hard to avoid when using digital components in my synth, especially processors like Arduino stuff _________________ my synth |
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RingMad
Joined: Jan 15, 2011 Posts: 427 Location: Montreal, Canada
Audio files: 4
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Posted: Fri Feb 15, 2019 7:39 am Post subject:
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Interesting stuff!
When I first started doing "experimental music" years ago, I had no equipment so I used a lot of AM radio interference, and a telephone pickup, with borrowed guitar pedals, and eventually someone gave me an old shortwave radio. And then I dropped the radio stuff to explore other things.
I'm curious to try this. As well as see how other radio bands respond...
Les: Nice to see you on the forum again!
.:james:. |
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Inventor
Stream Operator
Joined: Oct 13, 2007 Posts: 6221 Location: near Austin, Tx, USA
Audio files: 267
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Posted: Fri Feb 15, 2019 9:55 am Post subject:
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It's good to be back (again). I like the comments here, maybe we can come up with some new circuits on this topic.
Les _________________ "Let's make noise for peace." - Kijjaz |
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Inventor
Stream Operator
Joined: Oct 13, 2007 Posts: 6221 Location: near Austin, Tx, USA
Audio files: 267
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Posted: Fri Feb 15, 2019 10:34 am Post subject:
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I'm curious about an idea on this topic.
If we probe with an AM radio, we are listening to the functionality of the circuit as it operates. Then if we listen to other locations and other frequency bands simultaneously, we can hear the entire circuit operating all at once.
Such an item might be beneficial as a music pickup, and there may be other uses like diagnostics. It can be kind of like listening to a car's engine. Maybe even just listening to the supply voltage would be interesting.
Just a thought.
Les _________________ "Let's make noise for peace." - Kijjaz |
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