Before starting, Time base – Fostex FD-4 User Manual

Page 24

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24

Before Starting

Recorded area

Non recorded area

ABS 0

00M, 00S, 00F

00M, 08S, 00F

REC END

DISK END

23H, 59M, 59S

-002BAR, 1 , 00CLK

001BAR, 1 , 00CLK

01H, 00M, 00S, 00F

01H, 00M, 08S, 00F

00H, 59M, 52S, 00F

01H, 00M, 00S, 00F

00H, 59M, 51S

00H, 59M, 59S

ABS

BAR/BEAT/CLK

MTC

MTC

BAR =001BAR, 0404

TEMPO=001BAR, 1 , 60

MTC OFFSET=01H, 00M, 00S, 00F

MTC OFFSET MODE=ABS

(This shall be assumed to be the

MTC OFFSET time set for the ABS

00M, 00S and 00F positions.)

MTC OFFSET=01H, 00M, 00S, 00F

MTC OFFSET MODE=BAR

(This shall be assumed to be the MTC

OFFSET time set for the 00 BAR, 1

and 00 CLK positions.)

This chapter describes some basic items that you need to know before you start operating the FD-4.
All users, including those who are familiar with using tape-based multitrackers and those who are new to multitrackers,
should read this chapter thoroughly to understand the functions of the FD-4.

1. Time Base

2. Recording method and REMAIN display

3. Managing songs by Program Change function

4. Real tracks and Additional tracks

5. Input monitoring and playback monitoring

6. PAN knobs and stereo bus

Before Starting

Time Base

The word “Time Base” appears frequently in this manual. The concept of Time Base is similar to a “tape counter” on a
conventional tape-based multitracker in that it indicates the precise position of the recorder transport section (the current
position).
The FD-4 offers three types of Time Base: ABS (Absolute type), MTC (MIDI time code), and BAR/BEAT/CLK (bar/beat/clock).
ABS indicates an absolute time on the disk. MTC indicates a relative time that is obtained by adding a certain value (MTC
offset value) to the ABS value. BAR/BEAT/CLK indicates the position in a song created in the internal Tempo Map according
to MIDI clock and Song Position Pointer. The following diagrams depict the relationship among these three types of the Time
Base.

You can switch between these three types of Time Base to

suit your purpose. (Refer to the explanation in “Display Sec-

tion” on page 21 for more information on switching Time

Base.)

<Note>

When BAR/BEAT/CLK is selected as Time Base, the po-

sition for ABS 0 (top of the disk) is always “- 2 BAR, 1 , 00

CLK” and you cannot modify this value.

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