Mind Peak WaveRider Manual de Instruções descarregar pdf (Página 48)

WaveRider Operating Manual

MIDI

MIDI stands for the Musical Instrument Digital Interface. MIDI is a protocol or language

spoken between electronic musical instruments and computer based music software and

hardware. MIDI sends messages that are composed of note and velocity information. The

note number refers to the pitch of the note and consists of a number between 0 & 127.

Velocity is the loudness or volume of the note. Velocity also varies between 0 & 127. MIDI

is a keyboard or piano based metaphor and it is sometimes helpful to think of it as such. Each

time you produce a note there are two pieces of information sent along: the note and the

velocity. The velocity (or loudness) is so called because it is analogous to hitting the key on

the keyboard. The harder you hit it, the higher its’ velocity, the louder the note.

There are several other types of messages in MIDI, controller messages, voice messages,

pitch bend, and system exclusive messages. Voice messages set the voice or instrument on

each channel. Continuous controllers provide the ability to do such things as add sustain,

tremolo or pan between speakers. Sys ex or System Exclusive messages implement features

that are specific to a particular make and model of synthesizer. WaveWare does not

implement Sys ex messages but many synthesizers provide the mapping of controllers and/or

notes to sys ex.

Most implementations of MIDI have 16 channels . Some early sound cards had 4 channels.

Some high end systems provide the ability to multiplex providing supplemental banks of

channels in multiples of 16 channels (16, 32 etc.). MIDI makes use of numbered channels.

WaveRider has lettered biological channels (A,B,C,D).

You can map multiple biological parameters from a single biological channel to

multiple MIDI channels simultaneously. (You could conceivably map the output of one

biological channel to 16 MIDI channels). (e.g. you can map the coherence from channel A

to MIDI channel 1 and the Alpha from channel A to MIDI channel 2).

Generally it is not a good idea to have more than one biological output go to the same MIDI

channel unless you are careful to assign note values that do not conflict. If there is a conflict

you will probably notice it when one voice ‘grabs’ control of another channel.

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Mind Peak WaveRider Manual de Instruções Página 48