S C O T T P E T E R S E N ∞ E L M U C O ∞ S C A C I N T O . C O M

homepage for scott eric petersen, el muco, and all things electronic

Fun with the Wien Bridge Oscillator


Look ma, a (almost) sine tone!

To the fledgling electronics enthusiast who has just enough knowledge of electronic music theory to be dangerous, it makes sense that the simplest tone, the sine tone, should be the simplest/easiest to construct in the analog electronics domain.  Of course, this is not the case.  While geometrically simple to describe, the sine tone is not easily achieved using electronic components.  Most designs found online indicate that the most common method is to “filter” a square wave created by an op-amp through a given set of components placed between the output, the non-inverting input, and the ground.  This is the method employed by the Wien Bridge Oscillator. Read the rest of this entry »

Filed under: DIY, Tutorial / How-to, , , , , , , , , , ,

Modular Synth Components

(top, left to right) Oscillator with voltage divider, low pass filter, white noise generator, amplifier

(top, left to right) Oscillator with voltage divider, low pass filter, white noise generator, amplifier

Last night El MuCo (The Mutagenic Cooptoraptors) accomplished a feat heretofore unimaginable: three circuit projects were undertaken and three projects were completed successfully.  While you may be tempted to think that, with the assistance of a book (Ray Wilson’s Analog Synthesizers) and the vast power of the internet this is not a big deal, you could not be more mistaken. Not only because of our chronic electronic ineptitude, but because even getting all the parts together for this much electronic awesome is daunting.  Of course, we didn’t have all the right parts, but we did it anyway because SCOFFING AT CONVENTION IS OUR BREAD AND JAM™! Read the rest of this entry »

Filed under: Phase 1, Tutorial / How-to, , , , , ,

Intro to SuperCollider 3 for the Uninitiated

sc3_128There are so many good tutorials, books, and websites out there for learning SuperCollider that one may scoff at “yet another…” SuperCollider intro and for good reason.  This article, however, aims to answer really basic questions at the absolute beginner level, questions such as “ok, but how do I get SuperCollider and what version do I want?”  I will present information in the form of an extended FAQ largely based on questions I have answered over and over again.  Read the rest of this entry »

Filed under: Code, SC3 - Code - Music - More, Tutorial / How-to, , , , , ,

New SuperCollider on (x)Ubuntu

SuperCollider on Xubuntu

My page on installing SC3.x on Ubuntu has been a popular page here at scacinto.com. Because it was written 3+ years ago, and more importantly, because so much changed with the SC3.6 update I felt compelled to write up another tut. This time I’m installed 3.6.x on Xubuntu 13.10. The flavor of Ubuntu you choose doesn’t matter. I like X because it uses the lighter XFCE desktop environment. Actually, I like and use #! Linux more, but Ubuntu is the easier and more people use it (even though #! is better!) so here goes: Read the rest of this entry »

Filed under: SC3 - Code - Music - More, Tutorial / How-to, , , , , , , ,

Aural Assault?!?

Hello all!  Many apologies for my long absence – life happend between February and now and it sort of kicked my butt a little.  By way of an apology, I would like to offer you a link to a new project I am doing: 375 Aural Assaults!

You can check out the page for the “what the h*$# is this?!?” question and enjoy the sonorous splenfdiforousness while you are there.  I will be adding sounds to this site as often as I can.  After all, what else am I going to do?..  (<– trick question)

375 Aural Assaults! 

Filed under: Code, SC3 - Code - Music - More, , , , , , , , , ,

Batch Normalize and add Fades to Audio Files


A new project I have just started has had me editing a lot of relatively long audio files.  I have to cut them up separating the noise from the spoken word, normalize each file, and add fades to the beginning and end.  Then, I have to export them.  I was using Audacity, which is a great (though ugly) audio editor.  However, there are some problems with batch work in Audacity that ended cost me a lot of time and ultimately making it unsuitable for my purposes.  Finding no app for mac to quickly batch normalize, add fades, and save as a 48k/24-bit file, I decided I would bite the bullet and try to *assemble a bash script to do the tedious work for me. Read the rest of this entry »

Filed under: Code, Music, Tutorial / How-to, , , , , , , ,

Four Pillars I

Four Pillars I
by scott eric petersen
jan – 2011

For live electronics (supercollider) and 4 channel audio.

This piece is the first of a series (still in progress) of pieces that explore feedback networks, interactivity (perceived) and aural serendipity. The recording below is one realization of the piece as each time the code is executed the results vary. It has also been modified from the original (for four channels) for stereo.

Read the rest of this entry »

Filed under: Code, Music, , , , , , ,

“The Record Player is Broken”

nov 2012
SuperCollider Code (executed in real-time.)

I just finished a submission for the SCTweet-a-thon, this time being held at WOCMAT. (Please note that because of WordPress awesomeness (sarcasm… drip drip) the code below runs out of the visible area of the post.  You can see if all clearly if you copy and past it somewhere else.)

Here’s a 4 minute recording of the code in action:

Read the rest of this entry »

Filed under: Code, SC3 - Code - Music - More, , , , , ,

IBeam Laser Show (2011)

It has been almost five months since MuCo performed for the 2nd time at Ibeam and for one reason or another the recording has sadly sat neglected on a hard drive since then.  I finally dug it out, mixed the tracks together (output of kane + scacinto) and here it is for your listening pleasure.

(Just in case you are wondering what the laser-gun sounds are that occur at the beginning and, even more noticeably, during the middle of the recording [11:18 ->], they came from a magical black box that Kane made and I played without knowing how it worked. Hilarity.)

El MuCo @ Ibeam May 28th, 2011

Filed under: El MuCo, , , , , , , , , , , , , , , ,

Music of the Macintosh Classic ][

I recently came into possession of a 1992 Mac Classic II personal computer. How is a matter of top security, but I assure you it was legal.

Over the course of several days, this machine went from DOA to fully functional computer music production facility. All despite lacking an ADB keyboard! That’s right, the sonic awesome you are about to hear was produced sans querty keyboard. Gotta love a computer you can control almost completely with a one-button mouse.

Without too much more delay, here are the “pieces.” All were recorded in the jankiest of fashion* due to the lack of a mini-to-mini TRS cable. The sounds were generated in Super Studio Session at 22kHz 8-bit mono and recorded to 22kHz 16-bit then transcoded to mp3 then whatever SoundCloud did to them.

The Schubert file was an example included with the “strings” instrument collection.The rest were “composed” by myself, Brian Kane, and Paul Coleman.

New NRT MuCo free jazz improvisation. Instruments: bongo, clarinet, organ, bari sax. Listening to it a number of times I can’t help but think that this is what Terry Riley would have done in the 60s if he had had a Mac Classic II, only several hours longer.

Entire 68k playlist! :D

Mac Classic II complete with ADB keyboard and mouse. Thanks Mark!

**It’s called two banana clips on a mini-to-1/4” TRS attached to another mini-to-1/4” TRS reversed. Yup. That’s how we role ;)

Filed under: El MuCo, , , , , , ,

G O I N G S O N : L O C A L (ISH)

fritz Art of Fritz Horstman
kane Music of Brian Kane
fritz Hartford Phase Shift
fritz Hartford Sound Alliance
Lique Art of Philip Lique
Lique Music of Matt Sargeant
strycharz Art of Heather Strycharz
uncertainty Uncertainty Music Series

My Other Awesome Sites [•_•]

Assault! 375 Aural Assaults!
About me! About me!
MySpace! MySpace!
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My (soon-to-be) Company! My (soon-to-be) Company!

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P O S T E R S !







INI new haven

Handmade instruments by Scott Petersen and Brian Kane at Artspace New Haven