SkruntSkrunt
It gets louder

Playing With Piezo Crystals

I updated the swarmed post.

I’ve been playing a little bit with piezo crystals. Some good how to videos include:

You just need soda ash (baking soda that you cooked) and cream of tartar to make these crystals.

So I made some: Home-made piezo crystals

I hooked them up with alligator clips: Alligatored Clipped Crystal

I had to amplify the crystals to hear them: Fet Amplifier

The amplifier I used is described here: Fet Amp. It is very easy to source the parts from digikey.

I made a more permanent mic out of a crystal that I soldered: Plastidipped crystal

I had TERRIBLE mains hum and I tried dealing with it in analog with a Twin T Notch Filter using a 1uF and a 2.2uF and 680 ohm resistors to cut out 60hz. It did not work well: T-Connector Notch Filter

I eventually made some csound code to dehum for me.

Here is a demo of the big crystal with the tinfoil on the right channel and a 4.5k piezo contact mic on the left channel. There’s a toothbrush involved as well.

Youtube: Skruntskrunt and Ramshackledayparade's Parker Thiessen - AMASASATTSPBW (Victoria Noise Festival)

2012 Victoria Noise Festival Submission: AMASASATTSPBW - Avoiding Multicolinearity in Automatic Soundtracks: A Statistical Analysis of Textural, Temporal, and Spatial Properties of Breaking Waves

Video: Parker Thiessen Audio: skruntskrunt (abram hindle) / burn [the computer]

Video description: Shores of Iceland

Abram used R, Perl, Csound, and OpenCV to generate this score.

https://youtube.com/watch?v=buxVu3MMEug

SWARMED

SkruntSkrunt recently just performed 2 performances of interactive music instrument: SWARMED.

This instrument allows the audience to play it with their own cellphones. They just need to sign up to my wifi network and they get redirected to a web instrument that plays out on the PA!

The Victoria Noise Festival Performance

The Works Performance

Example instrument architecture

SkruntSkrunt.ca

Source Code

Welcome

Welcome to the new SkruntSkrunt website!

Youtube: SkruntSkrunt - SWARMED (2/2 Audience View) -- Edmonton WORKS Festival June 22, 2012

SkruntSkrunt SWARMED – Edmonton Works Festival

Please excuse the quality of videography, as this is from the audience point of view of the performance.

What’s really going on is that I’m not playing, the participants in the audience with smartphones are playing. They connect to my network and are served a webpage with a GUI on it. This GUI sends music commands to my webserver via WiFi and then that gets rendered on the PA.

The WiFi is setup as a captive portal, just like Hotel wifi, and it directs the users to my instrument gateway which then analyzes their device and chooses and an appropriate UI. The audience then can hear themselves play on the PA.

It was much louder than the video shows.

http://skruntskrunt.ca

https://youtube.com/watch?v=smYA1gPpkBw

Youtube: SkruntSkrunt - SWARMED (1/2 Audience View) -- Edmonton WORKS Festival June 22, 2012

SkruntSkrunt SWARMED – Edmonton Works Festival

Please excuse the quality of videography, as this is from the audience point of view of the performance.

What’s really going on is that I’m not playing, the participants in the audience with smartphones are playing. They connect to my network and are served a webpage with a GUI on it. This GUI sends music commands to my webserver via WiFi and then that gets rendered on the PA.

The WiFi is setup as a captive portal, just like Hotel wifi, and it directs the users to my instrument gateway which then analyzes their device and chooses and an appropriate UI. The audience then can hear themselves play on the PA.

It was much louder than the video shows.

http://skruntskrunt.ca

https://youtube.com/watch?v=XDCgChAebFw

Youtube: SkruntSkrunt - SWARMED (FPS/Performant View) -- Edmonton WORKS Festival June 22, 2012

SkruntSkrunt SWARMED – Edmonton Works Festival

Please excuse the quality of videography, as this is a performer eye view of the performance. I set up the network and then walk around providing tech support.

What’s really going on is that I’m not playing, the participants in the audience with smartphones are playing. They connect to my network and are served a webpage with a GUI on it. This GUI sends music commands to my webserver via WiFi and then that gets rendered on the PA.

The WiFi is setup as a captive portal, just like Hotel wifi, and it directs the users to my instrument gateway which then analyzes their device and chooses and an appropriate UI. The audience then can hear themselves play on the PA.

It was much louder than the video shows.

http://skruntskrunt.ca

https://youtube.com/watch?v=kOPK1MW0Fds