This powerpoint presentation introduces the key components of a synthesizer. It describes the oscillator, filter, amplifier, envelope, and LFO (low frequency oscillator) as the five most important synthesis modules. The oscillator generates the basic waveform, the filter shapes the sound, the amplifier controls volume over time, the envelope modulates intensity of parameters over time, and the LFO modifies tones and rates of change. The presentation was created by Sean Drennan, a student pursuing a career in music production.

1. Explain the usage of the 5
most important synthesis
modules
A power-point presentation
By Sean Drennan

2. Presentation Content
 Introduction
 What is a synthesizer?
 Reflection

3.  Introduction
 Hi, my name is Sean
 I’m a student
 I live in Ireland
 I started this course because I am
interested in pursuing music production as
a career later in life

4. What is a synthesizer?
 First a short description of what a
synthesizer is. A synthesizer is an
electronic musical instrument designed to
produce artificially generated sound, using
techniques such as additive, subtractive,
frequency modulation, physical modeling
or phase modulation synthesis to create
sounds.

5. Oscillator
 An oscillator is something that generates the
basic waveform that serves as raw material for
the creation of sound.
 It has several waveforms, sine, sawtooth,
triangle and square, and each gives a sound type
quirky and different to each other, given the
different harmonic content they have.

6. Filter
 Filters pass certain frequencies of the basic
waveform and certain other blocks. It is one of
the main parts of the synthesizer, not only
because the sound sculptures are "softening" the
basic waveform, but because it contributes to the
characteristic sound of each synth, even more
than the oscillators.
 Generally synthesizers mean that you can
change the filters in multi-mode, which select
what type of filter it is: low pass, high pass, band
pass, or band stop. You can also select the filter
slope, which gives you more tonal options.

7. Amplifier
 Amplifiers are used to control the signal level
with the passage of time. The amplifier is
equipped with a module known as an envelope,
which is divided into several elements that
facilitate the control of the level to the input
phases, the middle and the end of their sound.
Simple synthesizers typically provide simple
envelope, which is used to control the oscillator
(and filters) over time. Complex synthesizers can
integrate multiple enclosures.

8. Envelope
 Envelopes serve to modulate the intensity or
level of a parameter. There is an envelope
allocated to the volume of sound and another
assigned to the filter cutoff frequency. Among
these two envelopes are enough possibilities for
creating most synthesized sounds.
 Some synthesizers offer more envelopes to be
assigned to different parameters, or even the
ability to "switch off" the surrounding amplifiers
and filters and to be assigned freely.

9. LFO (Low Filter Oscillator)
 In a typical synth, the first parameter is an LFO
waveform which will modify the sound tone. The
second parameter is the Rate control, which
controls the speed at which the oscillator will
change the sound tone. Imagine a police siren
with a certain rate can make it sound faster or
slower. The amount parameter controls the
intensity to be applied to the modulation. In the
example this control would make the siren sound
more serious with tone higher tones.

10. Reflection
 Thank you for reading this powerpoint
presentation hope you liked it and if you have
any feedback or questions feel free to ask me
and Thank you again.