Signal Generation Sequences

YouTube via JeffreyPlaide
"This purely electronic original atonal composition was created without the use of any kind of synthesizer or musical generator. The combinational signal sources were recorded from the Adobe Audition signal generator function to generate fundamental sine, triangle or square waveforms and their associated harmonics as chosen from the software. Various waveforms were recorded with different initial and final frequencies and modulation attributes. Some waveforms had period rests inserted to create short frequency bursts, with some frequency segments being pitch-shifted to create pseudo-arpeggiated patterns. These sequences were processed with light chorus, flanging or reverb. A small number of waveforms were generated using the DTMF signal function - similar pulses (but modified) to digital dial tone telephone signals. Three first-order sequences were mixed. The first sequence incorporated many spliced segments sequenced by the aid of a light rhythm pattern created on the Hammerhead Rhythm Station. The second sequence included several spliced patterns but without the rhythm track. The last sequence was a complex ring-modulated cascade of rising and falling sine waves added to further ring-modulated sine waves. A simple arpeggiated chordal pattern functions to conclude the work. These three first order sequences were mixed with overlap edits and re-mixed and equalised at specific regions along the timeline to emphasize particular frequencies. The result is an abstract, dark and atonal electronic composition reminiscent of the style and execution explored by some of the early electronic music pioneers who used signal generators and magnetic tape recorders to splice together complete compositions without the use of a keyboard or other music interface. The visuals are a mixture of video imagery combined with oscilloscopic modulations performed by the Adobe Premier WaveWarp function and utilizing second-order modulation processing and colour manipulation."

Basic Vocoding with Photoshop

YouTube via Photosounder
"http://photosounder.com
http://photosounder.com/blog/2009/09/...
This is how to perform basic vocoding with Photosounder and Photoshop. The carrier signal (a saw wave) and the modulator (HAL 9000's voice) are turned into images using Photosounder. Then in Photoshop, the voice is vertically blurred as to fuse the different harmonics together, then it's pasted on top of the image of the saw wave by multiplication. The result is then loaded into Photosounder in lossless mode with the sound of the carrier as a reference signal, giving the vocoded voice as a result."