Appendix a: using tun files in the octopus – LinPlug Octopus User Manual

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Appendix A: Using TUN files in the Octopus

By Jacky Ligon

About Microtuning

Microtuning, or 'microtonality' are methods for tuning musical instruments,

whereby musicians may explore and compose with ethnic, historical and

contemporary intonation systems. Microtuning musical instruments enables

musicians to use unique scales which may have pitches lying between the

notes of our familiar Western 12 tone equal tempered scale. These unique

pitches and methods of microtuning musical instruments to sounds found in

the 'cracks' of the 12 Tone Equal Temperament, are one of the things that

gives the music of such places as Bali, India, Africa, Thailand, Turkey and

the Middle East a special intonational flavor, but is also something that is of

immeasurable value to the contemporary acoustic and electronic composer,

who may require a more broad palette of musical pitches for their music.

The quest for creating beautiful and musically useful microtuning systems

has been an unending process of discovery and debate amongst musical

theorists, mathematicians, physicists and musicians going back to early

history. Quite often the reasons for microtuning musical instruments may

involve improving the consonant intervals of a tuning-system for sweeter

sounding harmonies, as well as offering a wider variety of choices for

melody. Microtuning an instrument can sometimes mean there may be less,

or more than 12 tones in an octave, or even that the octave itself may be

stretched or compressed. Microtuning is a vast musical frontier, rich with

historical lore, music and an infinity of exciting musical possibilities for the

adventurous sonic explorer.

Creating TUN microtuning files with SCALA

Scala is a freeware utility developed by Manuel Op de Coul in the

Netherlands, which can be used for the creation and analysis of historical,

ethnic and contemporary microtunings. A powerful capability of Scala is that

it enables the user to create the proprietary tuning data required for

microtuning a wide range of hardware and software synthesizers and

samplers.

Manual

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