Csound Blog: Touch-Tone DTMF Generator

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The Csound Blog
Issue #13

Most people would never think of a touch-tone phone as being an additive synthesizer. Though it may be primitive, a phone does generate tones using two sine wave oscillators, which in my humble opinion, qualifies it as such.

However, I’m not here to debate the semantics of whether or not a phone is a synthesizer. Instead, I’m here to demonstrate how easy it is to emulate the sounds of the touch-tone phone.

Topics

  • DTMF
  • macros
  • additive

More at The Csound Blog. For more information about Csound, please visit cSounds.com.

Beginning Csound @ NYC Resistor

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Beginning Csound

Beginning Csound
July 28, 2008 @ NYC Resistor
1 Session, 3 hours, with personalized post-session project with instructor via email.
Cost $75

Csound is the most powerful computer music language in the world, with a direct lineage to Max Mathews’ original Music-N languages. The focus of this class will be a synthesis of three topics: The Csound language, synthesizer theory, and composing weird alien music.

Together, we will demystify the assembly-like syntax of the Csound language. We will cover the fundamentals of synthesizer theory, including: oscillators, filters, envelopes, amplifiers and modulation. Finally, we’ll tie it all together by composing sounds in the vein of classic Sci-Fi movies.

Taught by Jacob Joaquin (that’s me.) Click here to enroll.

kindercrasher

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kindercrasher from Inigo Quilez on Vimeo.

This is my contribution to the realtime 4 kilobytes visuals (usually known as “4k intro”) competition for Inspire 2008 (held in Spain). It is a set of spheres with radious controlled by the Fourier Transform (without the “fast”) of the music. it contains some realtime ambient occlusion and depth of field. It’s done in C, using shaders (GLSL). Once again, it all fits in a 4 kilobytes executable (music, animation, rendering engine and effects).

Wicked awesome! Via Create Digital Motion.

Slipmat Pre-Alpha 0.01.0 Released

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Slipmat 0.01.0

I just released a new Slipmat package at sourceforge. This latest version comes with three new examples, including one that uses a basic Java GUI. Four out of the five examples are now pre-rendered as CSDs for convenience. There are also a handful of new synth Modules to play with.

The documentation has been improved, including better Javadoc support. The Javadocs are not pre-rendered as to keep the size of the release to a minimum, so you’ll have to generate them yourself. Many IDEs, including NetBeans and Eclipse, will generate them for you.

There is also the PseudoTutorial example that gives a broad overview of the design of Slipmat and how to use it.

And in case you’re wondering, Slipmat is “A Java-based modular computer music library built on top of the Csound API.”