Arts

Visualising folk tune structures

Traditional tunes have a particular shape to them. Many, especially northern European, have two parts, each repeated, possibly with first and second time bars. Within this arching structure that spans the tune in a few leaps, there are smaller repeated phrases, callbacks and variations. I remembered a visualisation I saw a long time ago which took a MIDI file and visualised the structure. I wanted to do something for the tunes in FolkTuneFinder.

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Using TASCAM US-122 audio/midi interface with Mountain Lion

(punchline: give up it won’t work but it’s an interesting story)

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Oxford Laptop Orchestra – Lecture 4 — Modulation

oxlork

This is number 4 in my series of lectures in music technology and ChucK to the Oxford Laptop Orchestra. Delivered on the 5th of November 2012 at the Faculty of Music. Give the first three a read before reading this.

The content is complete here (except for a bit about Nyquist) so feel free to read this. But I intend to do a bit of copy-editing, and include sound samples before I declare it complete.

This week we look at low frequency oscillators, using them to modulate other oscillators and in the process how to do more than thing at once._

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Oxford Laptop Orchestra — Lecture 3 — Transcending Analogue

oxlork

This is number 3 in my series of lectures in music technology and ChucK to the Oxford Laptop Orchestra. Read the other two first. Sorry this blog post was a couple of weeks late. It’s quite substantial, but conceptually it underpins a lot of material. Persevere, read, ask questions.

This week sees a bit of a philosophical turn as we contemplate what ‘digital’ really means and how we can use it to play Bach on organ without having to build one first.

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Oxford Laptop Orchestra – Lecture 2 – Control Structures and Timbres

oxlork

This is number 2 in my series of lectures in music technology and ChucK to the Oxford Laptop Orchestra. Give the first lecture a read before reading this.

Last week we took a look at why, in my opinion, music and programming are natural bedfellows. We talked about what a program actually is and how it relates to Western music notation. We compared structural features of music and computer programs. We pinned down what the words ‘analogue’ and ‘digital’ actually mean, how sound is transmitted, and finally we wrote a program that plays a tune.

This week we’re going to continue down two parallel paths: more about the programming language and the nature of sound in general. The reason for all of this is to give you the tools to think about what you hear, apply analytical thought to the process of composition and creation, and to enable you to conceive of and make your own ChucK sounds.

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Oxford Laptop Orchestra : Lecture 1 : Music and Programming

oxlork

I’m very excited to be involved with the nascent Oxford Laptop Orchestra. This project, run by and for students at the University of Oxford, follows on from the work of the Princeton Laptop Orchestra. PLOrk, as its known, and now OxLork, is an effort to reproduce the form of performance embodied by a real orchestra or chamber group — that is, a number of individuals performing in concert, in a certain arrangement in space — with modern advances in electroacoustic music.

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My first piece of digital audio music: A Very Great Sadness

I used to make music on computers when I was a teenager. I used to spend hours in my room on a MIDI sequencer with a keyboard, a synthesiser and a mouse. These tracks were all MIDI. No they didn’t sound awful I had a nice sound module, but they do sound a bit dated now. But that was MIDI.

I very clearly remember a turning point. The day I bought my first (and, it turns out only) microphone. A Røde NT1A vocal mic.

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Sound file Plotter in Go using gosndfile / libsndfile

It’s no secret that golang is my new favourite language. I’ve used it to implement the latest folktunefinder search engine and really enjoyed it.

On an unrelated note, whilst looking at what libraries are available I came across the gosndfile library written by Matt Kane / @nynexrepublic. It’s a wrapper for libsndfile, a C library for reading and writing sound files.

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Jaga Jazzist Concert at the Barbican

I have been a devoted fan of Jaga Jazzist, a Norwegian group (they pretty much defy description) since around 2003, when I heard one of their tracks on a sampler CD issued by the Norwegian Embassy in London. This is the third gig of theirs I have been to. The first two were in the normal venues you would expect, with a lot of space for movement in response to the music.

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Graffiti Tribute to Hussain Mohammed

I live not far from the spot where Hussein Mohammed jumped in the Thames and drowned. Local youths have spray-painted their tributes in the underside of the bridge. Touching.  

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