Pointer Needed please

[lofi]

I have bought this as it looks nice, no other reason :-[

i want to make a circuit to make this thing dance, just rhythmically swing left to right as if reacting to music. I doesnt have to bear any significance and its only to fill up a bit of space on my headphone amp (3U with 5 of the Gyraph HP boards toward the left)

pretty pointless I know, but i have come to find that Metal Musicians get bowled over by moving things (oh and if they ask id just say its measuring phase correlation on the headphones, then ask what time the off license opens).

any pointers to where to look?

Iain

 

[shabtek]

huh?


http://www.youtube.com/watch?v=D2kRlSk2-VQ
1 hz oscillator driving 1 meter terminal, other terminal referenced to 1/2 supply voltage
http://www.interq.or.jp/japan/se-inoue/e_ckt5.htm

 

[Johan]

how about a left/right balance meter?...just a series diod( low forward voltage, like Ge or schotky) and an appropriate resitor hanging on the L and R outputs, going to the terminals on your meter...might be usefull if you' trying to mix something in a less than perfect enviroment  :-\  ...might also be boring if your material is perfectly ballanced or in mono..

j

 

[lofi]

thanks guys, i want it to react like a vu except centre 0 and dancing each side of that, but any readings to have no significance, aesthetics only. oh, and its for tracking so my feeds are mono, but working along those ideas.

thanks again

Iain

 

[Johan]

...uh, uh...how about this stupid idea then?...everything below 500Hz gets rectified and sent to the -terminal and anything over 500Hz gets rectified and sent to the +terminal ( asuming they are + and - )...then you can tell your clients that it "measures warmth in the track" and that "0" is what you aim for..perfect balance...then you tell all the bass players they are TOO warm and guitarists that their solo's are to cold..."just look at the meter.."..and pretty soon, everyone is pissed off....

...sorry, that was mean..

j

 

[tv]

Johan +1 along these lines

There was a vst plugin that measured averaged power (dBfs) of low and hi-freq content. You could develop a system that would crossover the signal and average the reading, then display as Johan pointed out.

This way, you could elaborate various setups (and crossover freq) for diff. inputs - voc, bass, synth etc.

 

[lofi]

messed around in the studio tonight while a 'band' rehursed in the live room, got to thinking .. whats a speaker take, head phones are just mini speakers, is it ac or dc? well its not gona be big what ever, so i conected the plus side to one leg of a phone output and the other to the common, voila, its danced.

now i need to get it so only +-V larger than 2.5mV and smaller than 28mV passes, then work out how to slow the swing down a tadge.

absolutely pointless exercise but it will look good, might even label it KMH meter (keeps musicians happy).

every time i pick up something thats a bit to do with electrics i feel like a little kid, for you gurus out there its old hat, but to me every day is a eurica day. I can build these toys you guys put up, but now i am starting to understand the schematics, it a wonder full world.

Iain