Processing Parameters
26
‘PEAKING BASS EQUALIZER’
A pseudo parametric style bass equalizer control that allows you to
sweet tune the bass. Four frequencies, amplitudes and Q's are provided giving you 64 different bass
curves to select from. Frequencies selectable: 60Hz, 76Hz, 95Hz and 120Hz. Q's selectable: 0.4, 1, 2
and 4. Gains selectable: 0, 1.5dB, 3dB, 4.5dB, 6dB.
The
'MULTI-BAND LIMITERS'
peak limit each of the bands to prevent distortion in the processors clipping
peak control system.
‘MASTER LIMITER DRIVE’
Sets the drive into the multi-band xover that generates the six bands of
audio. This control allows a +/- 6dB adjustment.
'B1-6'
'DRIVE'
Controls the drive into the limiter. The drive can be increased or decreased by up to 12dB.
'PEAK ATTACK'
Controls the attack rate of the limiter, the time the limiter takes to respond to an
increase of input level. The attack time can be varied between 1 and 10 which corresponds to 1mS to
200mS on a semi-exponential scale.
'PEAK DECAY'
Controls the peak release/decay rate of the limiter, the time the limiter takes to
respond to a decrease of input level. The DECAY time can be varied between 1 and 10 which corre-
sponds to 10mS to 1000mS on a semi-exponential scale.
'AVG ATTACK'
Controls the average attack rate of the limiter. This control is a modifier control that
scales from the peak attack control. The attack time can be varied between 1 and 10 which corre-
spond to peak attack time / 2 to peak attack time / 1000 on a semi-exponential scale. The AVG attack
control determines the dynamics of the dual time constant system and how control is shared between
the peak and average circuits.
'AVG DECAY'
Controls the average release/decay rate of the limiter, the time the limiter takes to
respond to a decrease of input level. The DECAY time can be varied between 1 and 10 which corre-
sponds to 200mS to 5000mS on a semi-exponential scale.
'HOLD THRESHOLD'
The HOLD function prevents 'suck-up' of noise and helps reduce IM distortion
by allowing the limiter to rest during periods of silence or low level audio. The level can be adjusted to
turn on when the input drops to a level from -20dB to -40dB. The HOLD can also be switched off.
'DELAY'
This function provides a delay before the peak decay circuit is activated. This can be used
to reduce distortion when faster release time constants are employed by reducing the gain hunting
between neighbouring transients. The range available is 1mS-500mS on a semi-exponential scale.
'MIXER'
menu. Each band can be adjusted over a small range to provide small EQ changes. These controls
are limited in range to prevent excessive drive into the peak clipping stages and excess distortion being
introduced. A solo mode is provided to aid in the setting up of parameters.
BAND1MIX:
-3dB to +3dB of level adjustment is available.
BAND2MIX:
-3dB to +3dB of level adjustment is available.
BAND3MIX:
-3dB to +3dB of level adjustment is available.
BAND4MIX:
-3dB to +3dB of level adjustment is available.
BAND5MIX:
-3dB to +3dB of level adjustment is available.
BAND6MIX:
-3dB to +3dB of level adjustment is available.
The
'LOOKAHEAD'
menu contains the controls that affect the look-ahead limiter which serves as the peak
limiting method for the DR mode of operation.
'DRIVE'
Controls the drive into the look-ahead limiter.
'SHELF EQ'
A high frequency shelving filter with a variable cut response. Adjustable over a range of 0-17
which corresponds to a cut of 0dB to -17dB measured at 15 KHz. This low-pass shelving filter is used to
Содержание DSPXtra-FM
Страница 63: ...www bwbroadcast com...
