gio619 Posted April 23, 2014 Share Posted April 23, 2014 I was going to undertake a project in the summer and need to know anything like this exists or will I need to create it? My project involves sine waves, water and high amounts of pressure. Ideally I am looking for LED lighting that changes colour at different sound frequencies, if something does not exist what would be the best thing to use? Link to comment Share on other sites More sharing options...
MarkPAman Posted April 23, 2014 Share Posted April 23, 2014 What range of frequencies are you interested in? Audio stuff or waves in the water? Some lighting desks have sound to light functions that are frequency dependent, cheapish example that may help you to do what you want. E2A - Just noticed the word sound in your post. So ignore that question! Link to comment Share on other sites More sharing options...
Brian Posted April 23, 2014 Share Posted April 23, 2014 Can't you cheat it? I assume that something is controlling the high pressure or generating the sine waves? Can't that 'something' control the lighting? Link to comment Share on other sites More sharing options...
gio619 Posted April 23, 2014 Author Share Posted April 23, 2014 its audio waves im after, im looking to alter the shape of water with them while also demonstrating the different frequencies using different LED coloursthere will probably be a computer involved to create the sound waves so I could use this, im just not sure how to haha Link to comment Share on other sites More sharing options...
timsabre Posted April 23, 2014 Share Posted April 23, 2014 I built a frequency-sensitive LED project for someone a couple of years ago... unless you are wanting very basic "bass/mid/treble" triggering I do not think you will find anything pre-existing, you'll have to make it. Arduino Due is your friend here. The thing I built used fast fourier transforms on a little ARM processor to calculate sound frequency and then generated DMX to display it. The hardware was a custom build but you could use an Arduino Due (which did not exist at the time) to do it. The ARM FFT library is open source and out there on the web. Link to comment Share on other sites More sharing options...
Brian Posted April 23, 2014 Share Posted April 23, 2014 Simple question - what's your skill level? Can you write software? Build an interface between a micro and a something? Know what a Walsh Transform is? Solder? Link to comment Share on other sites More sharing options...
timsabre Posted April 23, 2014 Share Posted April 23, 2014 Simple question - what's your skill level? Can you write software? Build an interface between a micro and a something? Know what a Walsh Transform is? Solder? Very good question! An alternative question might be - how much money have you got to pay someone else to do this? Link to comment Share on other sites More sharing options...
kitlane Posted April 23, 2014 Share Posted April 23, 2014 This is the sort of thing that Light Jams is good for. I suggest you download the demo and have a play. Link to comment Share on other sites More sharing options...
dbuckley Posted April 23, 2014 Share Posted April 23, 2014 Learn PD (a/k/a Pure Data), and use it to generate both the sine waves and DMX at the same time. Start here: [link] download the (free) PD Extended software, take the turoials until you "get it", and then generating sine waves and DMX should take you no time at all. To do DMX you need an interface, and here are some instructions (in French, but Google Translate makes decent sense of it) in how to get it going [link]. E2A - If you have budget, you may like to investigate Max/MSP, which is similar but will cost you real money, but does have commercial support. Link to comment Share on other sites More sharing options...
musht Posted April 24, 2014 Share Posted April 24, 2014 At sound to light level Arduino and MSGEQ7, here`s one on Kickstarter Or use the P.C to generate the frequencies and control LEDs directly and/or strobe the LEDs to freeze the action. Link to comment Share on other sites More sharing options...
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