Fohhn DLI-230, Руководство пользователя

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8. Glossary
Term Explanation
Beam dispersion
Here, this refers to the directional characteristics of a loudspeaker: Beam
dispersion describes the spread of the acoustic waves originating from a
loudspeaker (with regard to a particular frequency). The vertical beam
dispersion of your
LINEA FOCUS system can be adjusted electronically and
in real time.
Acoustic centre The acoustic centre of the beam can be moved along the full line length –
electronically and in real time.
Beam Steering The term Beam Steering denotes the control of loudspeaker system beam
dispersion via electronics and software. Through the precise
superimposition of closely positioned sound sources, it is possible to
“bundle” the sound over a wide frequency and flexibly adjust a
loudspeaker’s beam dispersion angle.
More on this in section 4.1 “Beam Steering – the Functional Principle“.
DSP (Digital Signal
Processor) A DSP serves to process and control digitalized audio signals. Every LINEA
FOCUS system has three different areas of DSP functionality (User DSP,
Speaker DSP und Beam Control DSP).
FOHHN-NET Here, this refers to a control network that is based on the RS-485 protocol.
More on this in section 3.4.4 “Fohhn-Net Cabling and ID Allocation“.
FOHHN-NET Adapter To communicate with the LINEA FOCUS systems, FOHHN AUDIO SOFT
requires an adapter for the FOHHN-NET , which is connected to the control
computer and transmits the data generated in FOHHN AUDIO SOFT to the
systems – e.g. an NA-3 or NA-11 .
More on this in section 3.4.1 “Configuration“.
ID
(FOHHN-NET) Here, this refers to the assigned address of an active Fohhn device in the
FOHHN-NET .
More on this in section 3.4.4 “Fohhn-Net Cabling and ID Allocation“.
Side Lobes Due to their construction, line arrays generate unwanted Side Lobes. These
result from the finite distances between the individual loudspeaker chassis
and the length of an array.
Side Lobe Free
Technology A specially developed algorithm suppresses the Side Lobes. As a result,
relatively little reverberation is generated, as less acoustic energy is
dispersed in unwanted directions.
Two Beam Mode See “Two Beam Technology“
Two Beam Technology Every LINEA FOCUS System can generate two separate, completely
independent acoustic beams over its entire line length. All parameters can
be separately and individually set for each beam.