Public address system

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Public address system

The public address system designed with platforms and stations in mind comes equipped with:

  • DYSTO public address system controller
  • amplifiers
  • speakers
  • ambient noise sensors
  • PUMI 1819-2 local microphone desktops

The public address system can emit voice messages automatically generated by the Dynamic Passenger Information System and broadcasted locally by operators or supervisors.

Description

Description

The public address system emits dynamic audio information on train timetables at railway stations and stops.

Microphone desktops

Microphone desktops

Microphone desktops are utilized to convert sound waves generated in the process of delivering verbal messages by PIS operators, traffic dispatchers, and emergency response personnel into alternating electric current.

The microphone desktop comes equipped with LED status signaling module informing about: power supply, work readiness, Ethernet connection, the transmission of automatic voice announcements generated by the server, as well as sending voice announcements by the operator. The device has two buttons included: a gong and a megaphone. The device is equipped with a 5-inch TFT LCD touch screen, by means of which the operator can select the desired object.

DYSTO public address system controller

DYSTO public address system controller

DYSTO public address system controller is an innovative modular device designed by DYSTEN with railway requirements in mind.

The device is a platform that ensures the availability of all the control and supervision functions, as well as allows for audio signal processing and routing all signals entering and exiting the system.

The DYSTO Public Address System Controller is a modular device. The system offers the operator a flexible configuration of the number of modules, depending on the scale of the system. The spare amplifier output can be shared with other DSP modules.

Speakers

Speakers

Speakers the final link of the public address system – they transmit voice messages within individual rooms of a given station and on platforms, ensuring that the announcements are well heard and understood. Both the selection and placement of the components of the system are handled by DYSTEN’s internal AUDIO department. Its representatives take into account the required sound power, facility acoustics analysis, technical calculations, required power of speakers and amplifiers, as well as SPL and STI sound pressure level distribution.

The AUDIO department carries out specialist qualitative and quantitative calculations by means of the open EASE (Enhanced Acoustic Simulation Engine for Engineers) software, verifying the loudness and legibility of verbal messages in order to meet the railway requirements.

The attached pictures show the electroacoustic system transmission-oriented speech intelligibility ratio, taking into account the noise level and masking. A female speech was considered in the calculations. It is a key qualitative indicator of the system, as it shows whether the messages transmitted by the system will be understandable for travelers.

The public address system emits dynamic audio information on train timetables at railway stations and stops.