Tag Archives: Sound Design

Art Code Drip Music

Drip: a Water Powered Sound Installation

I created this piece in collaboration with the new media artist Muhammad Hafiz Wan Rosli this spring. It was featured in the UCSB Media Art and Technology Program’s “Bits and Pieces” Exhibition back in May and we’ll also be showing it on September 1st at the Soundwalk Festival in Longbeach.

This is a technical description from the Soundwalk proposal:

“Drip is an interactive sound sculpture consisting of 16 tuned metal bars hung from a 3” by 3” by 5” high (freestanding) iron frame. Attached to the frame above each bar are solenoid water valves that can be triggered by an Arduino microcontroller. As the valves are opened and closed, drops of water pass through them falling onto each of the sixteen bars. The resulting sound is acoustically amplified through attached piezoelectric microphones. This action of falling water produces rhythms and melodies which are sequenced in real time and which can be altered by the audience’s interaction via light sensors embedded in the piece. Since all sound is generated acoustically, viewers can also interact with the piece by directly tapping the bars or plucking the nylon wire that suspends them in the air. The resulting soundscape is something like a surrealist version of rain falling on a tin roof or a collection of gongs being struck in chaotic mathematical patterns.”

Music

New Tracks Summer 2011

I’ve made a couple new songs recently, both of which are a practice in film composition. The first is a study on the work of Eduard Artemyev, a Soviet composer who worked with the director Andrei Tarkovsky on the film “Stalker.” Here, I’m attempting to copy the affect of the films opening sequence, for which Artemyev wanted to create a mixture of eastern and western aesthetics.

[audio:http://amusesmile.com/old/sound/rasa.mp3|titles=Stalker Rasa]

From Wikipedia: “[Artemyev and Tarkovsky] finally found the solution in a theme that would create a state of inner calmness and inner satisfaction, or as Tarkovsky said “space frozen in a dynamic equilibrium.” Artemyev knew about a musical piece from Indian classical music where a prolonged and unchanged background tone is performed on a tambura. As this gave Artemyev the impression of frozen space, he used this inspiration and created a background tone on his synthesizer similar to the background tone performed on the tambura. The tar then improvised on the background sound, together with a flute as a European, Western instrument. To mask the obvious combination of European and Oriental instruments he passed the foreground music through the effect channels of his SYNTHI 100 synthesizer. These effects included modulating the sound of the flute and lowering the speed of the tar, so that what Artemyev called “the life of one string” could be heard. Tarkovsky was amazed by the result, especially liking the sound of the tar, and used the theme without any alterations in the film.”

The second is a track I made entirely from the sampled first measure of “In a Sentimental Mood” by Ellington and Coltrane. I thought of it as appropriate for a busy city street scene, but a close friend of mine says it sounds more like someone is loosing his/her mind. The beat starts at 0:36.

[audio:http://amusesmile.com/old/sound/July2011.mp3|titles=July 2011]
Code DSP

Spatial Upmixer

I sort of got obsessed with the idea of being able to take a recording of a soloist and make it sound like an ensemble. As I found out, it’s not an easy thing to do, but adding on to spatialization software written by Ryan McGee, I was able to make something that sounds pretty decent (imho).

Technically speaking, this process is called “decorrellated upmixing” and it’s much harder than just adding a bunch of small delays to a signal. In real life, no two instruments are ever playing perfectly in phase with one another, but when we try to multiply a single signal that’s basically what’s happening, so as a result we often end up with a really strange “alien” phase-cancellation effect which sounds completely unnatural. My software gets around this by all sorts of filters and randomization techniques. Still there’s much work to be done, but I was able to create some realistic ensembles as well as some interesting effects on a variety of files. If anything it might be a quick way to sneak around copyright if you want to use someone’s recording…
[audio:http://amusesmile.com/old/projects/240B/violin.mp3|titles=Bach Chaconne Solo]
[audio:http://amusesmile.com/old/projects/240B/violin_multi.mp3|titles=Bach Chaconne Ensemble]
More Examples in the full project page.