Filter Setting; Limiter Setting - Fostex PD-6 Operation Manual

PD-6 DVD Location Recorder (Chapter 5: Recording/playback)
Adjusting the input gain

Filter setting

Limiter setting

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Using the [INPUT GAIN] control, you can adjust the input gain for each mixer
channel within the following range.
When the [INPUT MODE] switch is set to "D", "P" or "T": You can adjust the norminal input level within the
When the [INPUT MODE] switch is set to "L:
The PD-6 is equipped with the high-pass filter circuit. The cutoff frequency
can be adjusted within the range between 50 Hz and 300 Hz, and the filter
slope can be selected between -6 dB/oct. and -12 dB/oct.
The filter is useful to eliminate the wind noise during location recording or
unnecessary low frequency noise when recording voice or sound.
You can make filter setting for each channel individually.
By using the limiter when recording microphone sound, the signal level is
prevented from exceeding a certain level. In result, the signal level fluctuation
is suppressed. You can activate the limiter channel by channel, by setting the
[LIMITER] switch to "ON".
The PD-6 limiter uses the VCA (Voltage Controlled Amplifier) circuit. By
default, the threshold is -12 dB under the 24-bit full-scale level (all bits are
on) and the compressed ratio is 1:3. The limiter attack time is fixed to 20 ms,
while the release time is fixed to 150 ms.
You can set the threshold and level for each channel individually using the
"Limiter parameter" menu in the Setup mode (see "Chapter 7: Setup mode"
on page 98 for details).
range between approximately -60 and -26 dBu.
You can adjust the norminal input level within the
range between approximately -30dB and +4 dBu.
[HPF] control and switch
[LIMITER] switch