Skip to content

Latest commit

 

History

History
152 lines (134 loc) · 3.89 KB

README.md

File metadata and controls

152 lines (134 loc) · 3.89 KB

Haskell Chord/Scale Generator

Requirements

In order to run this program, install ghc and use ghci.
Please refer to the Haskell documentation pertaining to your platform for instructions on installing ghc.

Usage

Start ghci
$ ghci
Load chord-gen.hs
Prelude> :l chord-gen.hs

There is one function to display the chromatic scale for each string based on the tuning:

  • buildGuitar <tuning>

There are two possible functions to generate a chord or a scale:

  • buildSingle <tuning> <scale> <root note>
  • buildAll <tuning> <scale> <root note>

For the buildSingle function, there are three options that can be selected in the menu prompts:

  1. Tabs
  2. Symbols
  3. Notes

Example output of each:

*Main> buildSingle standard majTriad G
Enter minimum fret (0 - 12): 0
1. Tab
2. Symbols
3. Notes
Enter choice: 1

Root: G
Min. Fret: 0
E ||--3-|
B ||--0-|
G ||--0-|
D ||--0-|
A ||--2-|
E ||--3-|
*Main>

*Main> buildSingle standard majTriad G
Enter minimum fret (0 - 12): 0
1. Tab
2. Symbols
3. Notes
Enter choice: 2

Root: G
Min. Fret: 0
E | |-----|-----|--o--|-----|
B |o|-----|-----|-----|-----|
G |o|-----|-----|-----|-----|
D |o|-----|-----|-----|-----|
A | |-----|--o--|-----|-----|
E | |-----|-----|--o--|-----|
   0   1     2     3     4     
*Main> 

*Main> buildSingle standard majTriad G
Enter minimum fret (0 - 12): 0
1. Tab
2. Symbols
3. Notes
Enter choice: 3

Root: G
Min. Fret: 0
E | |-----|-----|--G--|-----|
B |o|-----|-----|-----|-----|
G |o|-----|-----|-----|-----|
D |o|-----|-----|-----|-----|
A | |-----|--B--|-----|-----|
E | |-----|-----|--G--|-----|
   0   1     2     3     4     
*Main>

There are two options for the buildAll function:

  1. Symbols
  2. Notes

Example output of each:

*Main> buildAll standard majTriad G
1. Symbols
2. Notes
Enter choice: 1

Root: G
Min. Fret: 0
E | |-----|-----|--o--|-----|-----|-----|--o--|-----|-----|--o--|-----|-----|-----|-----|--o--|-----|
B |o|-----|-----|--o--|-----|-----|-----|-----|--o--|-----|-----|-----|--o--|-----|-----|--o--|-----|
G |o|-----|-----|-----|--o--|-----|-----|--o--|-----|-----|-----|-----|--o--|-----|-----|-----|--o--|
D |o|-----|-----|-----|-----|--o--|-----|-----|-----|--o--|-----|-----|--o--|-----|-----|-----|-----|
A | |-----|--o--|-----|-----|--o--|-----|-----|-----|-----|--o--|-----|-----|-----|--o--|-----|-----|
E | |-----|-----|--o--|-----|-----|-----|--o--|-----|-----|--o--|-----|-----|-----|-----|--o--|-----|
   0   1     2     3     4     5     6     7     8     9     10    11    12    13    14    15    16
*Main> 

*Main> buildAll standard majTriad G
1. Symbols
2. Notes
Enter choice: 2

Root: G
Min. Fret: 0
E | |-----|-----|--G--|-----|-----|-----|--B--|-----|-----|--D--|-----|-----|-----|-----|--G--|-----|
B |o|-----|-----|--D--|-----|-----|-----|-----|--G--|-----|-----|-----|--B--|-----|-----|--D--|-----|
G |o|-----|-----|-----|--B--|-----|-----|--D--|-----|-----|-----|-----|--G--|-----|-----|-----|--B--|
D |o|-----|-----|-----|-----|--G--|-----|-----|-----|--B--|-----|-----|--D--|-----|-----|-----|-----|
A | |-----|--B--|-----|-----|--D--|-----|-----|-----|-----|--G--|-----|-----|-----|--B--|-----|-----|
E | |-----|-----|--G--|-----|-----|-----|--B--|-----|-----|--D--|-----|-----|-----|-----|--G--|-----|
   0   1     2     3     4     5     6     7     8     9     10    11    12    13    14    15    16
*Main>

Current <tuning> options

standard: E, A, D, G, B, E
dropD: D, A, D, G, B, E
halfDown: Eb, Ab, Db, Gb, Bb, Eb
fullDown: D, G, C, F, A, D
openE: E, B, E, Ab, B, E
sevenRock: B, E, A, D, G, B, E
ukulele: A, E, C, G

Current <scale> list

majTriad
minTriad
maj7th
min7th
sus4
sus2
diatonicMaj
diatonicMin
pentatonicMaj
pentatonicMin

Root Notes

Root notes are from A, Bb, B, C, ..., Ab. For sharp notes, only the corresponding flat reprentation is supported. Although, the output will include sharps where appropriate.