TC Electronic Broadcast 6000 - Manual (Page 105)

MD-4
English Manual 101
MD-4
MD-4 algorithm – introduction
MD-4 is a multiband processor featuring newly
developed DXP processing that lifts up low lev-
el detail rather than squashing the peaks. DXP
processing is ideal for classical music, acoustic
music, voice, film to broadcast transfers – and
other situations where low level subtleties tend
to get lost. The algorithm also features normal
and parallel compression, and the basic mode
can be combined with EQ, MS processing and
upsampled, adaptive limiting.
The five band structure uses phase linear re-
construction, and a 48 bit fixed point resolution
signalpath.
MD4’s hi-rate calculations provides the extra
benefit of low latency dynamics processing with
low transient distortion. For realtime sensitive
applications the throughput delay is 38 samples
at 44.1 kHz (0.86 ms, or equivalent to a source-
to-mic distance of 0.3 m = 1 foot). See the de-
scription of Look Ahead Delay for more informa-
tion.
The MD-4 algorithm occupies:
– @ Normal Sample Rate: 1/4 DSP Resource
– @ Double Sample Rate: 1/2 DSP Resource
The inputs and outputs of this algorithm are dis-
tributed as follows:
Input Output
1
E1
E2
E3
E4
1
2 2
3 3
4 4
I/O 1 to 2: Stereo or Dual mono processing
I/O 3 to 4: Thru channels, no delay
MD-4 algorithm – main page
MD-4 algorithm – main page
Input
In Gain L – In Gain R
Range: 0 dB to Off
Input Gain on Left and Right channels.
Delay
Range: 0 to 2000 ms
Delay setting for L and R channels
Delay Unit
Range:
Milliseconds (ms), Frames 24,
Frames 25, or Frames 30.
Phase Inv. L – Phase Inv. R
Phase Inverse switch for individual channels.
Filter
Lo Cut
Range: Off to 200 Hz
1st order low cut filter mainly for DC removal. If
digital Inputs close to full scale are used, turn off
the filter or adjust down the In Gain in order to
avoid overloads.
Normalize
Range: -18 dB to +18 dB
Overall Gain/Drive control. Once the Thresholds
of the Multiband section and Limiters have been
adjusted relatively to each other, the Trim is a