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Technology is amazing. For example, when I wake up in the morning, I reach for my smartphone and turn-on some music to start my day. And yes, those are the opening lyrics to “More than a Feeling” by Boston, you can put away your smartphone now.

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Barry Goudreau, Tom Scholz, Sib Hashian, Brad Delp, Fran Sheehan, in 1977.

But what you may not know is that Tom Scholz, the founding member of Boston and its primary songwriter, attended MIT and actually invented a guitar pedal to use. In doing so, Scholz joined the long tradition of musicians discovering ways to change their sound to make theirs sounds different, unique, and interesting. Witness the vast number of trumpet mutes: straight, cup plunger, bucket, harmon stem in/stem out. But because the electric guitar needs electronics to even make a sound, guitarists realized that by changing the electronics, they could create new and interesting sounds. In the 1950’s and 60’s, guitarists changed the electronics by actually physically modifying (breaking) the hardware by using razor blades to cut up the cones in the amplifiers to make the guitar sound “gritty.” Soon, guitarists soon realized that instead of breaking the current technology, they could simply create ones to deliberately change the sound --and the guitar pedal was born.

In doing so, Scholz joined the long tradition of musicians discovering ways to change their sound to make theirs sounds different, unique, and interesting. Witness the vast number of trumpet mutes: straight, cup plunger, bucket, harmon stem in/stem out. But because the electric guitar needs electronics to even make a sound, guitarists realized that by changing the electronics, they could create new and interesting sounds. Guitarists soon realized that they could simply create new electronics to deliberately change the sound --and the guitar pedal was born.

There is a “signal chain” where the electrical guitar is connected to the “guitar pedal” which is then connected to the large amplifier. The effects can be split into three main areas: volume and dynamic, modulation, and time-based effects. Dynamic effects include those of compression (makes dynamic range of guitar smaller), wah-wah (makes sound louder-then softer-then-louder, like the word wah-wah), and overdrive (distorts the sound by adding harmonics and inharmonics, originally made by making the vacuum tube larger). Modulation effects can include a flanger (adds the time-delayed output to itself in various intervals, resulting in a comb-filter in frequency domain), phase shifters (change the phase in frequency domain). Time-based effects include delay (play sound after fixed period), and reverberation (make a reverberation sound by making delays of a sound in smaller and smaller amplitude).

Currently, the Eventide “Pitchfactor” is one of the current leaders in pitch-modification. One of the cool effects that the “Pitchfactor” can do is output harmonized notes at a specific delay. Using this device, a guitar player can harmonize with himself and even make chords. However, the “Pitchfactor” is $500, so our group tried to see if we could make a similar effect at much cheaper cost.

Citation: Wikipedia, "Effects Units"

Questions & Answers

who was the first nanotechnologist
Lizzy Reply
k
Veysel
technologist's thinker father is Richard Feynman but the literature first user scientist Nario Tagunichi.
Veysel
Norio Taniguchi
puvananathan
Interesting
Andr
I need help
Richard
anyone have book of Abdel Salam Hamdy Makhlouf book in pdf Fundamentals of Nanoparticles: Classifications, Synthesis
Naeem Reply
what happen with The nano material on The deep space.?
pedro Reply
It could change the whole space science.
puvananathan
the characteristics of nano materials can be studied by solving which equation?
sibaram Reply
plz answer fast
sibaram
synthesis of nano materials by chemical reaction taking place in aqueous solvents under high temperature and pressure is call?
sibaram
hydrothermal synthesis
ISHFAQ
how can chip be made from sand
Eke Reply
is this allso about nanoscale material
Almas
are nano particles real
Missy Reply
yeah
Joseph
Hello, if I study Physics teacher in bachelor, can I study Nanotechnology in master?
Lale Reply
no can't
Lohitha
where is the latest information on a no technology how can I find it
William
currently
William
where we get a research paper on Nano chemistry....?
Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
what are the products of Nano chemistry?
Maira Reply
There are lots of products of nano chemistry... Like nano coatings.....carbon fiber.. And lots of others..
learn
Even nanotechnology is pretty much all about chemistry... Its the chemistry on quantum or atomic level
learn
Google
da
no nanotechnology is also a part of physics and maths it requires angle formulas and some pressure regarding concepts
Bhagvanji
hey
Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
Hafiz Reply
revolt
da
Application of nanotechnology in medicine
has a lot of application modern world
Kamaluddeen
yes
narayan
what is variations in raman spectra for nanomaterials
Jyoti Reply
ya I also want to know the raman spectra
Bhagvanji
I only see partial conversation and what's the question here!
Crow Reply
what about nanotechnology for water purification
RAW Reply
please someone correct me if I'm wrong but I think one can use nanoparticles, specially silver nanoparticles for water treatment.
Damian
yes that's correct
Professor
I think
Professor
Nasa has use it in the 60's, copper as water purification in the moon travel.
Alexandre
nanocopper obvius
Alexandre
what is the stm
Brian Reply
is there industrial application of fullrenes. What is the method to prepare fullrene on large scale.?
Rafiq
industrial application...? mmm I think on the medical side as drug carrier, but you should go deeper on your research, I may be wrong
Damian
STM - Scanning Tunneling Microscope.
puvananathan
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Source:  OpenStax, Harmonizing guitar pre-amp. OpenStax CNX. Dec 15, 2015 Download for free at http://legacy.cnx.org/content/col11932/1.4
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