Sound system

Sound systems for rooms from simple loudspeakers to intelligent systems that take care of reverberation and intelligibility in acoustically complicated spaces. These are the products of the entire electroacoustic chain, from microphones, to the routing of mixing signals, and to the actual reproduction.

Speech amplification must be designed so that listeners in the back of the hall can hear as well as listeners near the speaker. The reproduction should be balanced enough so that the amplification is not too loud in some parts and not too quiet in others.

Types of sound systems

Microphones

There are many types of microphones for picking up the spoken word. In general, however, it is always true that the closer the microphone to the mouth, the better the quality and the clearer the output.

Most common types of microphones

manual microphone
headset microphone
lapel microphone (not suitable for live performances without a special sound system arrangement)
desk and flat microphone
interference microphone

Wireless microphone

for the purposes of speaker or microphone movement, for example among multiple discussion participants
due to the crowded transmission band (DVB-T broadcasting and mobile operator services) it must be re-tunable and the whole system must be designed as stable and reliable

Signal processing

For further comfortable processing and quality listening, it is necessary to adjust and treat the individual input signals, for example:

feedback elimination
AEC - Acoustic Echo Cancellation signal limitation, compression or delay

Mixing and switching

Sound control centre. Depending on the type of use, it is necessary to define the type of system control in advance:

manual mixing
- mixing desks
- mixing systems
- manual switches
automatic mixing
- preset autonomous sound systems
controllable mixing and switching systems and matrices
- depending on the type of installation, either from the PC or from the control system

Amplifiers

Based on the type of installation and the purpose of use, they are divided into:

low-impedance amplifiers
distribution 70V and 100V amplifiers (for decentralized sound)
induction loop amplifiers

Speaker systems

A speaker system is composed of one or more speakers, finalized for specific use. Types of speaker systems:

built-in speaker systems
- ceiling-mounted
- wall-mounted
pendant speaker systems
wall-mounted speaker systems
column speaker systems
speaker systems for the music industry
speaker systems for arenas, stadiums and outdoor use
speaker systems for cinemas mobile speaker systems

Directional speakers

At exhibitions, the organizers increasingly target the sound at a given location. This sound system uses narrow directional loudspeakers, thanks to which the sound can be assigned to individual exhibits

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Sound system