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Music Tech

Morton Subotnick Interviewed

by on Nov.29, 2011, under creativity, External, listening, Music Tech

This is a great interview of an awesome figure in electronic music, done just recently (2011) in Madrid by the Red Bull Music Academy:

Listen to a free stream of Silver Apples of the Moon on last.fm.

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Internetworking

by on Nov.16, 2010, under Music Tech

A lonely computer music lab, between practice and Early Music Ensemble rehearsal. Sitting at my workstation, the phosphor lines glow back in friendship, inviting the experience. On some other terminal across an expanse of ocean lay the eyes and hands of another typist. For one reason or another, connected to the same server, our consciousness met through ‘talk’ and the revelation hit me that this new network – in 1991 barely used by anyone but scientists and art geeks – not only passively gave us text with pictures, but also brought us together.

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My synth project: complete!

by on Mar.11, 2009, under building, Craque, Music Tech

Here’s something I thought I’d never see myself do in my own lifetime: build a synthesizer from scratch.

Actually it’s a simple design: 2 555 timers in astable configuration producing square-waves. This means it’s a burst of sound every interval, pretty annoying and not very useful except for maybe starting earthquakes. So to give it a little flavor, I put a low-pass, 2-pole filter on the output of each oscillator, using a traditional operational amplifier.

K2 Schematic

A bit over a year ago it started out as a learning experience for me, I had never gotten into building things with analog circuitry – although I dated a chick in college who was an EE, so I was vaguely familiar with a breadboard. As a result, my design is über simple, and in reality was the design I could “get to work” from the opamp (a weird beast in itself, I will be tackling it again soon enough).

After a lot of experimentation and research on the web (these days a DIY’ers first reference), I came up with a 2-rail power design that provided 9V for the oscillators and 4.5V for the bipolar opamp (just left of the battery in the schematic). Moving left, the 741 opamp (NTE941) provides a low-pass, 2-pole filter to the signal from the 555 timer (NTE955).

completed synthguts

The cutoff frequency of the filter is controlled with a potentiometer, as is the pitch of the oscillator. You can also see my modification in the lower left for a “range” switch, which wasn’t on the breadboard prototype, but made it onto my final PCB because I think it adds a lot more interest and possibilities.

This was an intense project, no doubt. I got some training on soldering little kits that got made into sculpture, and I am a proud builder and owner of a bleep labs thingamakit, and have recently built the wave sheild for my new arduino board (which I haven’t quite gotten to work yet, so I hope it’s my programming skills and not my soldering skills).

As much as I tried to plan out wire distribution inside the chassis where the pots and switches would not interfere too much with the PCB, sure enough I drilled the holes sort of on the wrong end of the enclosure, so the edges don’t match unless I flipped it, and of course I only discover this after everything is screwed into the front. So, fixing it meant pulling all the knobs and switches back out, and removing the PCB from its mount on the inside and flipping it 180 degrees, then re-attaching everything.

In the end it really didn’t make that much of a difference and the whole thing came together fairly perfectly anyway. What I haven’t really done is add any decoration or labels, which I do want to do… inspiration will strike when I least expect it, perhaps it will not only get illustration but also a name, and it will evolve!

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New improvisations on SoundCloud

by on Feb.21, 2009, under Craque, listening, Music Tech

Freely improvised one-takes. Instrumentation includes homebuilt instruments, sampled objects and looping hardware.

This music sharing site is a great tool for posting various non-published tracks, as well as released stuff, and has a nice embeddable player and comment system. Really nice for being able to just slap some stuff up, I have one friend who has recently been doing the same with sessions on his new Serge Modular Creature, and another who posted “in progress” snapshots of a track he is working on.

Feel free to download and remix, just give the proper attribution. :)

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DataCent Failed HD Sound Library

by on Nov.17, 2008, under External, listening, Music Tech

Check this out… DataCent, a data recovery company, has started a catalog of common sounds heard on failing hard drives, and it covers multiple vendors and situations where things can be heard going terribly wrong. Best of all, they give full permission to use the samples as long as you contact them about it.

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Updated Audio Software

by on Oct.10, 2008, under Music Tech

I’ve done some updates to the Audio Software page, including three new categories: “Looping and Performance”, “Free Players and Visualizers” and “Programming Languages”.

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SoundHack Delay Trio Released

by on Sep.03, 2008, under Music Tech

Tom Erbe is one of the members of the electronic music community whose work I highly respect. Not only is most of his software free, not only are they usable by any skill level, not only are they the most educational electronic music tools i’ve ever used… I could go on. But the end result is that they sound simple and great.

At long last Tom has released the SoundHack Delay Trio, the description of the algorithms is fantastic, from the announcement:

“All of these are derived from the same basic delay algorithm: a hermite interpolated delay line with variable modulation, and a feedback loop with dc blocking and saturation. Pitch shifting is achieved with a dual head crossfading delay (ala Eltro Tempophon/Dennis Gabor/Pierre Schaeffer phonogene) and is decidedly low-fi. The saturating feedback also allows them to be great drone and noise generators.”

Awesome work! Can’t wait to get this one in action, I have something going now that begs for some new delay. 😉

Two of my other favorites of Tom’s are decimate+ and of course the ubiquitous SoundHack, both available (along with a TON of others) on the SoundHack Freeware page.

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