Music.Pitch.Relative.Quality

Augmentable class

class Augmentable a where

Class of types that can be augmented.

Methods

augment :: a -> a

Increase the size of this interval by one.

diminish :: a -> a

Decrease the size of this interval by one.

Instances

Augmentable Interval

Quality

data Quality

Interval quality is either perfect, major, minor, augmented, and diminished. This representation allows for an arbitrary number of augmentation or diminishions, so augmented is represented by Augmented 1, doubly augmented by Augmented 2 and so on.

The quality of a compound interval is the quality of the simple interval on which it is based.

Constructors

Major

Minor

Perfect

Augmented Integer

Diminished Integer

Instances

Eq Quality

Ord Quality

Show Quality

HasQuality Quality

class HasQuality a where

Methods

quality :: a -> Quality

Instances

HasQuality Quality

HasQuality Interval

isPerfect :: HasQuality a => a -> Bool

Returns whether the given quality is perfect.

isMajor :: HasQuality a => a -> Bool

Returns whether the given quality is major.

isMinor :: HasQuality a => a -> Bool

Returns whether the given quality is minor.

isAugmented :: HasQuality a => a -> Bool

Returns whether the given quality is augmented (including double augmented etc).

isDiminished :: HasQuality a => a -> Bool

Returns whether the given quality is diminished (including double diminished etc).

diffToQuality :: Bool -> Int -> Quality

Convert an offset to a quality.

This is different for perfect and imperfect interals:

Imperfect Perfect === === -3 dd ddd -2 d dd -1 m d 0 M P 1 a a 2 aa aa

qualityToDiff :: Bool -> Quality -> Int

invertQuality :: Quality -> Quality

replicate' :: Integral a1 => a1 -> a -> [a]