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MULTIBAND 1 (MULTIBAND LIMITER)
Split-band filtering
is a great technique where audio signal can be separated into different
frequency bands so that each band can be processed separately. Upon completion of the procedure,
the respective bands can be combined together to form a more coherent and dynamic sound.
Graphic visualization of the frequency bands is also available.
Processing
– the multi band processing an unique algorithm that controls the gain in each band
so as to assure sound stability. The sound color is controlled by the
Fidelity
parameter. It allows
either a pure or a colorful sound texture to be obtained. The
Sound Impact
algorithm will keep
the original authenticity of the sound attacks (peaks). The [On] and [Off] buttons in this section
enable or disable generally the
Gate
,
Sound Impact
and
Fidelity
options for the bass, low, middle
and high bands.
NOTE:
The Multiband process is very powerful and can absorb the important sound variations.
That is why is it not always necessary to use the AGC stage.
The Multiband limiters are used to restrain in limits each of the bands to prevent distortion in the
processing control system. Each of the parameters can be changed as per the user’s requirements.
The settings to be applied are identical for some of the subsections and are described in details
below.
Gate
– When the audio drops below this user defined threshold limit, the DB6400 will freeze
operation band. When the signal is too low, this function will limit the floor noise.
Fidelity
– This function controls the spectral balance between bands. For example:
• if the
Fidelity
= 0%, the bands will work independently and the sound will be more colorful;
• if the
Fidelity
= 100%, the bands will be linked to the spectral distribution at the input, and the
sound will be purer.
