MOTU Digital Timepiece User's Guide download pdf (Page 59)

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101

CHAPTER

8 MIDI Machine Control

OVERVIEW

As a synchronization hub for your studio, the

Digital Timepiece has the ability to be remotely

controlled from any device — or computer

software — that supports MIDI Machine Control.

This capability allows you to locate, play, record,

stop and cue everything from one master set of

transport controls. For example, you could control

everything from digital audio workstation software

on your computer. Or you could control

everything from a hardware MMC control surface,

such as a JL Cooper CuePoint™.

Depending on what gear you have, you can even do

both at the same time. For example, you could set

up your computer software as one transport

control master, and a hardware MMC controller

connected via MIDI as another.

How MMC works . . . . . . . . . . . . . . . . . . . . . . . . . .59

A recommended scenario for MMC . . . . . . . . . .59

MMC Device IDs. . . . . . . . . . . . . . . . . . . . . . . . . . .60

Setting up MMC slaves. . . . . . . . . . . . . . . . . . . . . .62

Setting up a MMC transport master . . . . . . . . . .63

MMC control of record functions . . . . . . . . . . . .64

HOW MMC WORKS

MIDI Machine Control involves all three

components of synchronization:

■ time base

■ address

■ transport control

An MMC controller (which has tape deck-style

transport controls) sends transport commands

(play, stop, locate, etc.) to another MMC device

that serves as the address (time code) master.

When the address master device responds to the

transport commands, it generates time code to

which all other devices chase and lock. The other

devices do not need to be MMC devices; all they

have to be able to do is slave to time code (LTC or

MTC) in the usual fashion.

The MMC address master device may also serve as

the time base master, but it doesn’t necessarily have

to. For example, video house sync could provide

the time base, while the Digital Timepiece provides

address.

Figure 8-1: An example scenario for MMC control of your Digital

Timepiece studio. Digital Performer (or any MMC-compatible

software) sends MMC transport commands (play, stop, record, locate,

etc.) to the Digital Timepiece, which responds to them by generating

time code and, in some cases, redistributing the MMC commands (to

devices like ADATs, DA-88s and SONY 9-pin decks).

A RECOMMENDED SCENARIO FOR MMC

You should try, if you can, to set up your rig so that

the Digital Timepiece is the address master (by

choosing one of its Internal modes). You can then

control it (and everything connected to it) directly

Digital Performer

or other workstation software

MIDI Time Code

(MTC)

MIDI Machine Control

(MMC)

Digital Timepiece

Other devices slaved to the Digital Timepiece

Various forms

of time code

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