musicMCT (version 0.1.2)

convert: Convert between octave measurements

Description

By default the period of a scale (normally the octave) has a size of 12 units (semitones). But it can be useful to convert to a different measurement unit, e.g. to compare a scale defined in 19-tone equal temperament (19edo) to the size of its intervals when measured in normal 12edo semitones, or vice versa.

Usage

convert(x, edo1, edo2)

Value

A numeric vector the same length as x

representing the input set converted to the desired cardinality (edo2).

Arguments

x

The set to convert as a numeric vector.

edo1

The size of the period measured in the same units as the input x. Numeric.

edo2

The period size to convert to. Numeric.

Examples

maqam_rast <- c(0, 2, 3.5, 5, 7, 9, 10.5)
convert(maqam_rast, 12, 24)

perfect_fifth <- z(3/2)
lydian_scale <- sort((perfect_fifth * (0:6)) %% 12)
convert(lydian_scale, 12, 53)