Re: MIDI key transducers (physical)
Re: MIDI key transducers (physical)
- Subject: Re: MIDI key transducers (physical)
- From: Mike Kent <email@hidden>
- Date: Tue, 25 Sep 2007 16:52:59 -0700
- Thread-topic: MIDI key transducers (physical)
Title: Re: MIDI key transducers (physical)
>>> I want to build a MIDI-like keyboard for playing scales based on
>>> quarter-tones, i.e. for a 24-tone equal-tempered octave, rather than
>>> a 12-tone octave.
>>
>> Actually, if you want quarter-tone, you probably don't want anything
>> like MIDI:-)
>
> There's really nothing about MIDI that makes it unsuitable for
> quarter-tone use, other than that since there are only 128 notes,
> you'd only get a little more than 5 octaves.
>
> MIDI note values are simple numerics: 0, 1, ..., 127. They are not
> pitched, so you could use them to send quarter-tone data.
Furthermore, the MIDI specification was updated years ago to deal with various scale tunings in a defined manner.
Quoting from the spec:
“MIDI Tuning”
“This is an addition to the MIDI specification which allows the sharing of 'microtunings' (user defined scales other than 12-tone equal temperament) among instruments of different manufacture, and the switching of these tunings during real time performance.”
MIDI Tuning defines a Frequency Data Format for communicating the tuning of the 128 notes available, Bulk Tuning Dump and Request, Single Note Tuning Change (real time), and Tuning Programs to recall up to 128 banks of 128 programs of stored, user-definable tuning tables.
Regards,
Mike.
_____________________________________
| Mike Kent, Mgr. Technical Relations |
| Roland Corporation |
|_____________________________________|
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