Using electrical technology, it is possible for us to synthesise new sounds.
Types of Generated Sound
Electrical devices produce three main types of generated sound.
1. Pitched Tones
A generated sound with a clear pitch.
Different types of oscillators produce different types of pitched sounds. These are explored in Basic Soundwaves.
2. Noise Sounds
3. Impulse Clicks
A very short generated sound.
Controlling the New Sounds
By changing the input controls on an oscillator, it is possible to change the pitch (frequency) and amplitude (loudness) of these sounds. Individual waves can be added together to create more complex waveforms.
The three sound types of pitched tones, noise sounds, and impulse clicks can be thought of as extreme types of generated sound. Many other sounds exist between these extreme points as a mixture of all three sound types.
The Elektronische Musik (Electronic Music), created in the Cologne studios, used mainly electronically produced sounds.
Some manipulations also use these type of waves as a signal to control the parameters of an effect over time (for example: a Low Frequency Oscillator).