{"id":90599,"date":"2026-05-18T15:42:38","date_gmt":"2026-05-18T13:42:38","guid":{"rendered":"https:\/\/lda-audiotech.com\/?p=90599"},"modified":"2026-05-18T15:50:58","modified_gmt":"2026-05-18T13:50:58","slug":"lda-software-public-address-voice-alarm","status":"publish","type":"post","link":"https:\/\/lda-audiotech.com\/en\/2026\/05\/18\/lda-software-public-address-voice-alarm\/","title":{"rendered":"How to choose the right LDA software for each project"},"content":{"rendered":"

[vc_row css_animation=”” row_type=”row” use_row_as_full_screen_section=”no” type=”full_width” angled_section=”no” text_align=”left” background_image_as_pattern=”without_pattern”][vc_column][vc_column_text css=””]LDA Audio Tech offers a range of software solutions to control its public address and voice alarm systems and enhance their functionality. NEO Control, EVAC Control, EVAC Cloud and SIME each address operational needs depending on the type of project and its complexity.<\/p>\n

In this guide we will carry out a practical comparison<\/strong> to help you understand them better and identify which one fits each project before specifying. Let\u2019s get started.[\/vc_column_text][vc_column_text css=”.vc_custom_1779112062621{margin-top: 30px !important;}”]<\/p>\n

The four software solutions at a glance<\/h3>\n

NEO Control<\/strong><\/a> is designed for NEO+ or NEO installations that only require basic volume control and audio sources routing. It is a self-installable and database-free<\/strong> application that allows to easily control and supervise the system, without additional infrastructure, scheduling or advance management.<\/p>\n

EVAC platforms focus on supervision and maintenance of EN 54 systems. EVAC Cloud<\/a><\/strong> provides cloud access, basic configuration<\/strong> and fault alert notifications by email. It\u2019s the perfect fit for distributed installations where there is no permanent local technical staff available.<\/p>\n

EVAC Control<\/strong><\/a> goes further, since it includes all EVAC Cloud features and adds local operation: multilingual TTS with AI-powered automatic translation, virtual microphone, pre-recorded messages player, event scheduler and advance zone management<\/strong>. It is the right choice for medium and large projects where operation and control are critical.<\/p>\n

Finally, SIME<\/a> <\/strong>is built for high-complexity project and very specific needs. It covers large multisite installations<\/strong> that requires redundant architectures, integration with external systems and custom control logic. It is the best solution when the project doesn\u2019t fit a standard template.[\/vc_column_text][vc_column_text css=”.vc_custom_1779102379615{margin-top: 30px !important;margin-bottom: 30px !important;}”]<\/p>\n

Features comparison table<\/h3>\n

The following table provides a detailed overview of the available functionalities in each software:<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
FEATURE<\/strong><\/td>\nNEO CONTROL<\/strong><\/td>\nEVAC CONTROL<\/strong><\/td>\nEVAC CLOUD<\/strong><\/td>\nSIME<\/strong><\/td>\n<\/tr>\n
Includes hardware (server) certified as an EN 54 accessory<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Compatible with NEO<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Compatible with NEO+<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Compatible with ONE<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Under development, with some functional limitations)<\/td>\n		✔ <\/span><\/strong>
\n(Under development, with some functional limitations)<\/td>\n		\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Compatible with future LDA products<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
BGM source routing (PA)<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Volume control per zone (PA)<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Management of ZES-22 PA microphones (NEO)<\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Management of NEXO PA microphones (NEO+)<\/td>\n\u2718 <\/span><\/strong>(Handled natively in NEO+ with NEXO and NEXO Hub)<\/td>\n<\/tr>\n
Sending UDP triggers to NEO\/NEO+<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
System supervision by zone (faults, status, evacuation mode, etc.)<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Easy to install and configure (no database required)<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Allows adding installation floorplan<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Single-site system<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Multi-site system<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Accessing each site individually)<\/td>\n		✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
VA functions (evacuation and alert)<\/td>\nNot natively, but available via events<\/td>\nNot natively, but available via events<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(With SIME EVAC module)<\/td>\n<\/tr>\n
Calendar: one-time or recurring pre-recorded messages launching events, scheduling and colour tagging<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(With SIME Calendar module)<\/td>\n<\/tr>\n
Master clock for internal clock synchronisation of NEO and NEO+<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Requires internet connection)<\/td>\n		\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Virtual microphone to send voice messages from a client terminal in false live mode with pre-listen<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Requires internet connection)<\/td>\n		\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
AES67 digital playback of up to 2 simultaneous pre-recorded message streams<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Pre-recorded message playback via analogue output (2 simultaneous streams)<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Server requires 2 sound cards)<\/td>\n<\/tr>\n
Text-to-Speech (TTS) for multilingual and multi-voice pre-recorded message generation, including pre-listen<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Requires internet connection)<\/td>\n		\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(With SIME TTS module)<\/td>\n<\/tr>\n
User-customisable dashboard with up to 30 tabs and 30 zones per tab, featuring visual maps of the installation<\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Logs including all system actions<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Remote supervision using cloud platform over the internet<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Requires internet connection)<\/td>\n		✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Secure remote access for advanced configuration functions (NEO Configurator Cloud)<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Requires internet connection)<\/td>\n		✔<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n<\/tr>\n
Encrypted data transmission<\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
Redundant server architecture<\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔<\/span><\/strong><\/td>\n<\/tr>\n
SIP call integration<\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(With SIME VOIP module)<\/td>\n<\/tr>\n
Automatic gain control<\/td>\n\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(Under development)<\/td>\n		\u2718<\/span><\/strong><\/td>\n✔ <\/span><\/strong>
\n(With SIME CAG module)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

[\/vc_column_text][vc_column_text css=”.vc_custom_1779112251846{margin-top: 30px !important;}”]<\/p>\n

Which one do you need for your project?<\/h3>\n

Beyond the features, your choice depends on the type of installation and what the customer needs<\/strong> to manage on a day-to-day basis. Here is a quick guide by scenario.<\/p>\n

▶\u00a0NEO Control<\/strong><\/h4>\n

This is the simplest option for projects that only require basic public address (PA) control<\/strong>. With no remote management or advanced functionality, its strength lies in its ease of installation and configuration.<\/p>\n

Typical applications:<\/p>\n