Hi. My name is Jan Zurcher.
I’m a singer-songwriter living in a
small town called Friday Harbor, San
Juan Island, Washingt...
By definition, this is a device that generates and modifies sounds using
electronic means. In general, a synthesizer gener...
Given that synthesizers are designed to:
• generate sound waves;
• change their frequency (i.e., filter them);
• change th...
Oscillator
What is a Synthesizer?
Filter
What is a Synthesizer?
Amplifier
What is a Synthesizer?
Low
Frequency
Oscillator
What is a Synthesizer?
Envelope
What is a Synthesizer?
An oscillator generates sound based on a particular
wave form. Common options include triangle, saw
tooth, square wave and...
The filter is a critical part of any synthesizer.
This is how you shape the spectrum of the wave.
While there are addition...
The Amplifier on this synthesizer
allows you control over which
parts of the envelope the amplifier
will access and the in...
Envelope
The Envelope section is used to control the
level of the sound over time.
There are 4 basic components to a sound...
The Low Frequency Oscillator operates at
frequencies below the normal range of hearing.
The output of the Low Frequency Os...
This concludes our quick tour of a basic synthesizer. Any time
you start to work with a synthesizer you will likely find t...
Synthesizer wk6 imp
Upcoming SlideShare
Loading in …5
×

Synthesizer wk6 imp

1,003 views

Published on

Assignment for Week 6 of Introduction to Music Production offered by Berklee School of Music through Coursera

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
1,003
On SlideShare
0
From Embeds
0
Number of Embeds
2
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Synthesizer wk6 imp

  1. 1. Hi. My name is Jan Zurcher. I’m a singer-songwriter living in a small town called Friday Harbor, San Juan Island, Washington This lesson is for Week 6 of the Introduction to Music Production Course at Coursera.org. The topic I have chosen to look at this week is…
  2. 2. By definition, this is a device that generates and modifies sounds using electronic means. In general, a synthesizer generates specified wave forms and then alters them in a way that changes their frequency, duration, intensity and/or timbre. There are different forms of synthesis: 1. Subtractive – removes the unwanted parts of a signal (such as removing overtones) 2. Additive – builds a new sound from a pure sine-wave tone 3. Sampling – digital recording of sounds that are then altered What is a Synthesizer?
  3. 3. Given that synthesizers are designed to: • generate sound waves; • change their frequency (i.e., filter them); • change their intensity (i.e., amplify them); • change their duration (i.e., by altering their sound envelope); and, • alter their timbre, most synthesizers have sections to accomplish each of these tasks. Lets take a look at where each of these sections is found on a simple synthesizer. The following screen shots show the ES1 Synthesizer found in Logic Express 9.0. This particular synthesizer has several sections but the focus will be on the 5 main ones: What is a Synthesizer?
  4. 4. Oscillator What is a Synthesizer?
  5. 5. Filter What is a Synthesizer?
  6. 6. Amplifier What is a Synthesizer?
  7. 7. Low Frequency Oscillator What is a Synthesizer?
  8. 8. Envelope What is a Synthesizer?
  9. 9. An oscillator generates sound based on a particular wave form. Common options include triangle, saw tooth, square wave and sine waves. On the right, you see the Oscillator section of the ES1 oscillator. It has 4 main controls: 1. Wave Knob Primary Oscillator - allows you to select the primary wave form for the signal. 2. Octave Selector - allows you to select the octave used for the wave generated. Note that these are in “feet”. They represent the length of organ pipes – shorter pipes generate higher pitched sounds and longer pipes lower ones. 3. Wave Knob Sub-Oscillator - allows you to generate another wave two octaves below the primary wave. If you only want the primary wave, this can be turned off. 4. Mix – controls the volume balance between the Oscillator and the Sub-Oscillator. Oscillator
  10. 10. The filter is a critical part of any synthesizer. This is how you shape the spectrum of the wave. While there are additional controls on this particular synthesizer the three that are common to most synthesizers are 1. Low Pass Filter – this is the 24 dB filter. This filter is used to cut the high frequencies (brightness of the upper harmonics) off the signal. 2. Cutoff – allows you to set the frequency at which high frequencies will be cut 3. Resonance – boosts the frequencies right around the cut-off frequency. For a subtle effect, use a low setting. A very high setting can cause the filter to produce an entirely different sound. Filter
  11. 11. The Amplifier on this synthesizer allows you control over which parts of the envelope the amplifier will access and the intensity of that affect. In other words, it shapes the volume of the sound. Amplifier
  12. 12. Envelope The Envelope section is used to control the level of the sound over time. There are 4 basic components to a sound envelope: 1. Attack – the length of time it takes from the start of the sound to reach the desired level 2. Decay – the length of time it takes for the sound to fall to the sustain level 3. Sustain – the level the sound will maintain until the key is released 4. Release – the length of time for the sound to fall from the sustain level to a 0 level.
  13. 13. The Low Frequency Oscillator operates at frequencies below the normal range of hearing. The output of the Low Frequency Oscillator connects to the input of the Oscillator causing the pitch to waver (usually by just a very small amount. It is often used to create vibrato effects. The controls in this Low Frequency Oscillator include: 1. Wave knob – allows you to select the wave form for the oscillator which impacts the colour of the sound. 2. Rate – allows you to control the frequency of the oscillation from 0 (Direct Current) to 24.5 Hz. Low Frequency Oscillator
  14. 14. This concludes our quick tour of a basic synthesizer. Any time you start to work with a synthesizer you will likely find these 5 basic sections – usually in the same basic configuration. Oscillator Filter Amplifier Low Frequency Oscillator Envelope

×