Music - MYP 4 and 5 - Samuel Wright - Hodder 2020

Which structures exist
for deconstructing
and understanding
electronic music?
exploration: Synthesis
Music
2) (part
Figure 8.25 Light spectrum represented in Pink
■
1973 album The Dark Side of the Moon
Floyd’s
Figure 8.26 Synth One examples with no filter, then
■
applied
filter
Figure 8.27 GarageBand subtractive synthesis
■
back to back
examples
Figure 8.24 Filters with envelopes
■
Subtractive synthesis, works in the opposite direction
from additive synthesis. Sound waves all have what are
, or , that exist above
higher frequencies harmonics
called
their fundamental (the note being played). Imagine it is
like the light experiment, where white light through a
prism demonstrates the spectrum of colour in a single
beam of light.
In GarageBand on iOS, for example, you can choose a
synthesiser preset, then with the analyser on top see what
when the or is dialled back
Resonance Cutoff
happens
to zero. The upper frequencies just disappear, leaving a
smoother tone.
Subtractive synthesis takes these harmonics out using
is called a ( ) and the
low-pass filter LPF
what
filter ADSR
envelope.
In the following images look for the image of the sound
presented. In each you will notice a change in the wave
form or a reduction of higher frequencies.
Try this yourself within the music software you have, and
research more additive and subtractive synthesis examples
online.
Music for the IB MYP 4&5: by Concept
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