Generating The Pink Noise; Setting The Surround Speaker Level; Adjusting The Lfe Gain; Channel Delay - Tascam IF-SM/DM Owner's Manual

2 – Using the card : MONITOR ALIGNMENT option

Generating the pink noise

Make sure that your monitoring system is
turned on, and adjusted to a reasonable work-
ing level.
1 Use the
MONITOR
up the oscillator to produce pink noise.
2 Set the level. If you are working to the
SMPTE standard,
the analog nominal level (the EBU
-18
equivalent is ).
3 Route the oscillator to the surround
busses ("Oscillator routing" on page 6).
Solo (exclusive solo is set by default
when the oscillator is routed this way)
the first channel using the solo controls
on the
OPERATION
channels" on page 6).

Setting the surround speaker level

It is also possible to adjust the level of the
subsidiary speakers on this
screen using the
MENT SURROUND LEVEL
The speakers adjusted in this way are:
LRCS
S speaker only

Adjusting the LFE GAIN

The gain of the LFE channel relative to the
other channels can be adjusted using the
control on this screen. This is indepen-
GAIN
dent of the surround mode selected.

Channel delay

To allow for placement, etc. and to prevent
phase distortion, etc., channels can be delayed
relative to each other.
/ screen to set
OSC/COM
-20
corresponds to
screen ("Soloing
MONITOR ALIGN-
control.
LFE
TIP
When working with 5.1, start the pro-
cedures using the C (dialog) channel.
4 Read the level on the SPL meter.
5 Solo another channel. Read the level on
the SPL meter, and adjust the
value shown on the
MENT
screen, if necessary, so that it
matches the first.
Trim levels can be adjusted ±9.9dB in
0.1dB steps.
6 Repeat this process until the levels of
all channels, as measured by the SPL
meter, are within a few dB of each
other.
7 Turn off the oscillator.
5.1
LS, RS
6.1
LS, RS, CS
These can be adjusted from 0dB to +10dB in
1dB steps.
The adjustment is either 0dB (no adjustment)
or +6dB to +10dB in 1dB steps.
Channel delays can be set from 0ms to
50.0ms in 0.1ms steps.
The exact technique of measurement and cor-
rection procedures is a little beyond the scope
of this manual.
TASCAM IF-SM/DM Owner's Manual
TRIM
MONITOR ALIGN-
15