Online DSP primer – Circles, Sines, and Signals

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Seeing Circles, Sines, And Signals is an interactive “Compact Primer On Digital Signal Processing” by Jack Schaedler. It’s getting a lot of positive comments. Jack says:

My goal is to explain the Discrete Fourier Transform using a miniature curriculum which leverages your ability to learn concepts and absorb information visually instead of linguistically. My hope is that these glyphs become slightly more comprehensible and slightly less intimidating after reading the subsequent 30 or so pages.

Articles like this seem popular on SynthTech, and this is a very-well-done intro, so have at it!


Building a monosynth using WebMIDI API

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Browsers are only beginning to be able to play audio triggered by MIDI. This tutorial shows how that can be done today using the Chrome browser and Angular.js … javascript code included.

Not only does the Web MIDI API allows us to build synthesizers and audio effects, but we can even start building browser-based DAW (Digital Audio Workstation) similar in feature and performance to their current flash-based counterparts…. In this tutorial, I will guide you through the basics of the Web MIDI API, and we will build a simple monosynth that you will be able to play with your favorite MIDI device.

VID: 24 light-sensitive resistors => Arduino => any software

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This is an interface that has 24 light sensitive resistors. It is built with Arduino and 3 multiplexers. In these examples it sends data to Max/MSP and controls sound, but can send data to any software (Processing, Reaktor, SuperCollider, Junxion etc) that talks to Arduino. So this is like having 24 light dependent faders, you can do whatever you like with the data. These are just two simple examples, but I’m going to make more patches in Max, possibilities are endless.

Wolfgang Palm tells the PPG story

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Wolfgang Palm is sometimes called the “father of digital synthesis”. He founded PPG (1975-87) in Hamburg, Germany, where he invented  wavetable synthesis and made the PPG Wave line of synths. In the “History” section of his blog he tells the story of those heady days for his tiny company at some length.

Synths were becoming important across the music scene in the PPG years. There was an endless line of well-known musicians with special needs … and a lot of competition, inside Europe (Fairlight) as well as from Japan (Roland, Korg) and the US (Moog). Wolfgang describes the hectic timeline of all that, and the constant pressure it (and rapidly changing, fragile technology) put on his little company.

“Today, nearly every digital synthesizer implements wavetable synthesis in some form.”

Geist MR-808 Drum Robot

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Moritz Geist has recreated many of the sounds of the 808 drum machine using mechanical actuators to play physical objects. MIDI controls the Arduino which controls the actuators. All instruments are encased and lightsrwerkin!

On a separate page, Geist explains all the technical details. Might be useful in many ways!!

Sneak-Thief’s Sneaquencer is a DIY Monster

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For years I’ve been dreaming of a live-performance sequencer that would give me the power and flexibility to perform music with a perfect balance between the ability to control, improvise & automate. Drawing heavily on sequencing paradigms developed at Yamaha (16 sections with multiple tracks per section), I built and programmed my own….

On the Sneaquencer, I can choose any song and it will instantly begin playing. Since it has two independent sequencers, I can mix and match everything on the fly: “Oh how about the drums from this song mixed with the melodies from this one? Or the vocals from this other track mixed in with this track’s bassline?”

It’s a live performer’s paradise – I can change directions any time and mix and match material to create unique and reactive live sets.

For the whole story, visit CDM: Sneak-Thief’s Sneaquencer is a DIY Monster.

MUCH more tech detail on Sneak-Thief’s website. Then ogle his DIY 8-rack modular. From there find a collection of tracks on Synthcloud, which leads to the goodies at electro-music.com. Never doubt, there’s a whole lot of makin’ goin on!

VID “Programming Music with Overtone”

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Sam Aaron: “Programming Music with Overtone”

This [42-minute video, Feb. 2012] presentation introduces Overtone – a Clojure front-end to the state-of-the-art realtime sound synthesis engine SuperCollider – currently being established as a music platform for both research and

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