Sound Performance Lab 9737 - Manual (Page 10)

10
Machine Head
O UTPUT G AIN varies the output level of the digital data stream.
It is variable between -12 dB and +12 dB in 0.1 dB steps.
The adjusted O UTPUT G AIN value is shown in the LC-display
(see 7) and in the O UTPUT PPM meter (see 8).
In practice you will start with the OUTPUT G AIN set to 0 dB. In
case you have used high D RIVE values you will use the O UTPUT
G AIN to compensate for the slight level increase.
You can also use the O UTPUT G AIN control to compensate for
the loudness difference between unprocessed and processed
signal to judge upon the sonic effect alone. After you have
reduced the O
UTPUT G AIN until original and processed signal
have the same loudness you can readout the loudness increase
on the O
UTPUT PPM meters compared to the I NPUT PPM meters.
Also, if you have chosen a positve setting on the HF-A DJUST
control, it may be necessary to reduce the O UTPUT G AIN slightly
in order to prevent clipping. Watch the C LIP -LED S !
You will set a positive O UTPUT G AIN , when there is still
headroom left after processing. Always check this on the
loudest part of the audio file being processed and watch the
C
LIP -LEDs.
With the H IGH T APE S PEED switch you can change the speed of
the vitual tape from standard tape speed (15 ips) to high tape
speed (30 ips).
When H IGH T APE S PEED is activated the algorithm simulates
the pre-emphasis for high speed recording. The upper mid and
high frequencies as well as the harmonical content gain better
resolution and finer detail.
Note that the 40 Hz to 70 Hz bass-reduction induced when
recording to analog tape at 30 ips is not reproduced!
The LC-display shows all encoder settings and the number of
the preset being used in the last session with the M ACHINE H EAD
(for details on P RESETS refer to 9).
More information is displayed when activating the I NFO pages
(see 10). Press S TORE and A PPLY for 1 sec. to enter the I NFO
pages.
The I NPUT and O UTPUT LED chains are PPM (peak level) meters
with signal and clip indicators. The metering offers 1 dB resol-
tion for the last 3 dB before 0 dB.
The I
NPUT
PPM meters show the peak level after the I
NPUT
G AIN control (see 2).
Control Elements
Compensating a level
and/or loudness increase
due to processing
Gaining a finer high
frequency resolution when
selecting H
IGH T APE S PEED .
Output Gain 5
High Tape Speed
LC-display
6
LED chains
7
8