Wayfarer Forges Sound Season 01

Dr. Lawrence W. Moore shares knowledge in the areas of computer music, electro-acoustic music, multimedia art, and interactive media.

Wayfarer Forges Sound S01E01 – Pure Data Basics & Digital Audio Fundamentals Part 1

Wayfarer Forges Sound S01E01 – Pure Data Basics & Digital Audio Fundamentals Part 1

The Wayfarer Forges Sound series includes various topics within the realms of computer music and electro-acoustic music. Dr. Lawrence W. Moore covers topics that range from synthesis, electronic music composition, audio engineering, signal processing, sound design, and interactive media.

In this first episode and season of the series, Moore focuses on building up one’s fundamental knowledge of digital audio, synthesis, electronic music, and other important topics for further learning. The software Pure Data by Miller Puckette is utilized to get an “under the hood” understanding of digital audio and the basics of recording and synthesizing sound. This first episode uniquely focuses on understanding samples, sampling rate, sample tables, and the basic language of pd.

PD can be downloaded from PureData.Info


Wayfarer Forges Sound S01E02 Pure Data Basics & Digital Audio Fundamentals Part 2

Wayfarer Forges Sound S01E01 – Pure Data Basics & Digital Audio Fundamentals Part 1

in this episode of Wayfarer Forges sound, Dr. Lawrence W. Moore furthers the understanding of digital audio fundamentals, such as sampling, sampling rate, oscillators, and phase. Within this episode one can learn how to create an oscillator in Pure Data, attenuate that oscillator in pd, establish the cycle and the phase of that oscillator as well. Overall, this episode covers oscillators, cycles, phase, and phase cancellation.


Wayfarer Forges Sound S01E03 – Frequency, Overtones, Harmonics, and Partials

Wayfarer Forges Sound S01E03 – Frequency, Overtones, Harmonics, and Partials

One of the most fundamental concepts that must be understood in the fields of sound recording, sound design, synthesis, and audio production, in general, is that of frequency and the frequency spectrum. The frequency spectrum of a sound not only contains its fundamental pitch, but it also contains a host of frequencies that give it its unique tone color. This episode covers the fundamental frequency, overtones, harmonics, and partials. Adobe Audition is utilized to visualize the frequency spectrum and see as well as hear the harmonics and partials that make up spoken voice as well as sung voice. Spear by Michael Klingbeil is used to understand how component sine waves come together in varying intensities and frequencies to make up the partials and harmonics in a sound. This tutorial is an essential primer in understanding sound frequencies and the frequency spectrum.

SPEAR was created by Michael Klingbeil.


Wayfarer Forges Sound S01E04 -Sine Waves, Triangle Waves, Square Waves, and Sawtooth Waves Part 1

Wayfarer Forges Sound S01E04 -Sine Waves, Triangle Waves, Square Waves, and Sawtooth Waves Part 1

The four basic wave shapes in synthesis are the sine wave, the triangle wave, the square wave, and the sawtooth wave. These wave shapes are also different variants of the harmonic spectra that help to illustrate the different harmonic structures of sound and how they affect tone color. These different ideological wave shapes also are the cornerstones for analyzing spectral characteristics of natural sound. This lesson helps one to understand how to shape these sound waves using digital audio software such as Pure Data. This episode covers the math involve in shaping these waveforms in pd.


Wayfarer Forges Sound S01E05 – Sine Waves, Triangle Waves, Square Waves, and Sawtooth Waves Part 2

Wayfarer Forges Sound S01E05 – Sine Waves, Triangle Waves, Square Waves, and Sawtooth Waves Part 2

In this episode, we look at wavetable synthesis and how to create the four basic wave shapes in by using additive synthesis. Additive synthesis is when sine tones are combined together at different strengths in order to make more complex wavefroms. Sine tones are used at different harmonic strengths to make triangle, square, and sawtooth waveforms. The sine wave, triangle wave, square wave, and sawtooth wave are the four basic waveforms in synthesis.These concepts are presented int his lesson using Pure Data. pd is capable of using sine tones in summed harmonic frequencies to create the four basic waveshapes.


Wayfarer Forges Sound S01E06 – Amplitude, Compression, and Gating

Wayfarer Forges Sound S01E06 – Amplitude, Compression, and Gating

This lesson is a primer on dynamics processing. It covers the concept of amplitude and sound intensity and the two major forms of dynamics processing that are regularly used in a variety of media, compression and gating. Utilizing Adobe Audition, this tutorial goes over how to smooth out spoken voice fluctuations and how to eliminate noise in between the words. Overall, this is a good beginner’s guide to amplitude, dynamics processing, compression, gating, and expansion.


Wayfarer Forges Sound s01e07 – Making a Simple Synthesizer in Pure Data Part 1

Wayfarer Forges Sound s01e07 – Making a Simple Synthesizer in Pure Data Part 1

Pure Data is a graphic programming environment that allows you to build your own software. In this part of the series, Dr. Lawrence W. Moore show how to build a simple modular synthesizer. Because the construction is modular, different components can be added with each upcoming episode. In this episode he shows how to receive MIDI data into pd and how to take that data, display it, and get it ready to be routed throughout the rest of the synthesizer. There are a few logical strategies to controlling the flow of the data that are discussed. One learns how to receive and utilize note, velocity, modulation wheel, sustain pedal, and pitch bend information.


Wayfarer Forges Sound s01e08 – Making a Simple Synthesizer in Pure Data Part 2

Wayfarer Forges Sound s01e08 – Making a Simple Synthesizer in Pure Data Part 2

In this episode, we continue building our synthesizer in Pure Data. Now that there is a MIDI input module, this episode shows how to make a multi-oscillator module that has selectable waveforms. One can choose between a sine, triangle, square, and sawtooth waveform. This episode shows how to convert MIDI note data into frequency control over the oscillator and MIDI velocity as amplitude control.


Wayfarer Forges Sound S01E09 – Making Smooth Monophonic Response Control and an ADSR Envelope

Wayfarer Forges Sound S01E09 – Making Smooth Monophonic Response Control and an ADSR Envelope

In order to make a smooth-playing monophonic synthesizer, we need to update our synthesizer with some logic flow that discriminates between different MIDI note off messages to make sure that none of them cut off notes that are currently being held from a MIDI note on signal. Additionally, the episode show one how to build an ADSR envelope in Pure Data. In pd, one can use some logic and control signals to create an adjustable ADSR envelope for a synthesizer.


Wayfarer Forges Sound S01E10 – Adding Pitch Bend to Our Synthesizer

Wayfarer Forges Sound S01E10 – Adding Pitch Bend to Our Synthesizer

Now that we have a functioning synthesizer that has a VCO and a an envelope section with an ADSR, it is time to hook up the pitch bend operation. In this episode you will see the math and logic involved in making a smooth pitch bend response to the MIDI pitch bend controller to bend the pitch up and down an octave. In Pure Data, bending the pitch of the oscillator takes math and logic to execute. There is no built in pitch bend function in pd.


Wayfarer Forges Sound S01E011 – Making a Second Oscillator

Wayfarer Forges Sound S01E011 – Making a Second Oscillator

In this episode, we continue our build of a simple software synthesizer by adding a second oscillator. Synthesizers frequently have 2 or more VCOs as part of their design in order to thicken the sound and to mix together different waveform types. We will see how to divide up the signal information to have two oscillators with octave, semitone, and fine tune frequency control.


Wayfarer Forges Sound S01E012 – Adding a Low Pass Filter to our Synthesizer

Wayfarer Forges Sound S01E012 – Adding a Low Pass Filter to our Synthesizer

In this episode, we add a low pass filter to our synthesizer and use the modulation wheel to control its level in the mix of the sound. We also learn how to apply resonance and adjust the cut off frequency.