Trim, Event, Input monitoring and playback monitoring – Fostex VF-16 User Manual

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TRIM

It is important to take care when analog signals input
are converted into digital signals (A/D conversion)
when recording with the VF-16.
TRIM is used to tune this process and the PEAK LED is
used to monitor the process.

If the trim gain is too high ([PEAK] LED illuminated)
for the analog signals input into [INPUT] A to H, then
the signals input will be converted into distorted
(clipped) digital signals, which will sound like noise.
Once converted with this noise, it is not possible to
eliminate this distortion from the sound with the mixer
or recorder. Therefore, it is important to tune the
[TRIM] to a level where the “[PEAK] LED fluctuates
between the illuminating or not” point at the
maximum volume of the signal input.

INPUT Monitoring and PLAYBACK Monitoring

There are two ways to monitor the signal output (track
sound) from each track with the VF-16 recorder: input
monitoring and playback monitoring.

Playback monitoring means that the track output is
the sound that is played. This feature is generally used
to playback and listen to sounds that have already
been recorded. Playback monitoring is generally used
to playback sound.

Input monitoring means the signals (sounds to be
recorded) input on that track are directly sent to the
track output. This feature is used to check the REC
level of the sound to record.
Therefore, tracks that are able to be input monitored
are either in the “READY” or recording state.

EVENT

When recording with the VF-16, an independent audio
file for each recording is respectively created on the
tracks recorded. Remember that silence is also
recognized as one 0 file. These audio files and 0 (silent)
files are called an “events”. A total of 512 events can
be created for each track with the VF-16. An excess of
512 events cannot be recorded. It is rare that this
happens in normal use. The VF-16 is also complete
with the function to indicate the current number of
events. An alarm will sound when exceeding the
maximum number of events authorized. This
problem can be resolved by saving or loading the
program (procedures described later) in such case.
The following are specific examples of the number of
events.

A. The VF-16 counts the silent portion of a silent track, which is

counted as one file, but not recorded with any sound.

Therefore, this means that there will be one file on the track.

B. One audio file is created when recording sound on a track.

Therefore, this means that there will be two files on the track.

C. A new audio file is created when consecutively recording.

Therefore, this means that there will be three files on the

track.

D. An audio files is created after a 0 file, when re-recording after

fast forward. Therefore, this means that there will be five files

on the track.

E. When straddling (b) and (c) to record, the track will have four

files, and thus, the number of events are reduced.

Clip level

Appropriate gain

Excessive gain

Silence

Rec B

Rec C

Silence

Rec B

Rec C

Silence

Rec D

Rec E

Silence

Rec D

Signal input in the recorder

Signal output from the recorder

1 track

2 track

READY

3 track

4 track

5 track

6 track

7 track

READY

8 track

READY

9 track

10 track

11 track

12 track

13 track

14 track

15 track

16 track

Playback sound (Playback monitor)

Input signal (Input monitor)

Playback sound (Playback monitor)

Input signal (Input monitor)

Playback sound (Playback monitor)

One track exchange

8 track block exchange

Track 17

Track 18

Track 19

Track 20

Track 21

Track 22

Track 23

Track 24

Track 9

Track 10

Track 11

Track 12

Track 13

Track 14

Track 15

Track 16

Track 1

Track 2

Track 3

Track 4

Track 5

Track 6

Track 7

Track 8

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