Fohhn DLI-230, User Manual

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
Beam (°)
Adding a check mark to this field lets you set the vertical width of the beam – in 0.1°
increments - within a range of +/-90°.

High-pass (Hz)
Adding a check mark to this field lets you enter the frequency threshold (10 Hz to 10 kHz):
The fundamental tone below this frequency will be attenuated by24 dB / Octave (fourth
order). The high-pass is recommended for effective masking of the fundamental tone.

Side Lobes > Optimize
When adding a check mark to this field, Side lobes will be removed, as far as is possible, by
means of a dedicated
FOHHN algorithm. Because this makes the room less “excited”, levels
of speech intelligibility will be significantly improved. With the overall volume level of the
system now somewhat lower as a result, you can use the volume control in
FOHHN AUDIO
SOFT to compensate for this.

Center (%)
When Optimize is active, you can change the acoustic centre of the loudspeaker. 0 % means
that the acoustic centre moves to what is virtually the bottom end of the speaker, whereas
100 % takes it to the top end. In its default setting of
50 % (or if Optimize is not active) the
acoustic centre sits at what is basically the optical centre of the speaker.

Trim (dB)
Here you can attenuate the level of the selected beam over a range of 0 to -90 dB. If two
beams are active, you can use these fields to set the relative levels of both in parallel.
Detailed descriptions of the individual fields can be found in section 4.7.3 “System Setup (Focus-
Series)“ of the FOHHN AUDIO SOFT user manual.
4.3 Adjustment of DSP Functions
In addition to configuring the vertical beam dispersion characteristics of your LINEA FOCUS systems,
FOHHN AUDIO SOFT also give you direct access to the parameters of the FOHHN AUDIO DSP ( d igital
s ignal p rocessor).
The following DSP functions are available:

Input level

Output level

Routing

Delay

High-pass- and Low-pass filter

Equalizer

Dynamics

Signal Generator
Further information on the individual functions can be found in section 4.5 “DSP Functions“ of the
FOHHN AUDIO SOFT user manual.