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
Steady (pitched) signals are produced by electrical components, called oscillators. These sounds have a clear
pitch and duration.
A generated sound with a clear
Different types of oscillators produce different types of pitched sounds. These are explored in Basic Soundwaves.
2. Noise Sounds
Noise sounds are the opposite of pitched tones, they have no steady waveform and are highly randomised. Their sounds are spread across the spectrum.
This is a clip of white
noise. It is very intense because the whole frequency range (from very low to very high) is saturated.
https://ears2.dmu.ac.uk/wp-content/uploads/2013/08/WNoise.mp3 3. Impulse Clicks
Very short sounds which make a click sound. Their
envelope will dictate how sharp or smooth they sound, but they often sound like noisy clicks.
An individual click sound.
A very short generated sound.
https://ears2.dmu.ac.uk/wp-content/uploads/2014/06/Impulse2.mp3 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.
Elektronische Musik ( Electronic Music), created in the Cologne studios, used mainly electronically produced sounds. Extra
Some manipulations also use these type of waves as a signal to control the parameters of an effect over time (for example: a Low
Abstract Sounds, Electronic Music, Elektronische Musik, LFO (Low Frequency Oscillator), Oscillator, Sine Wave