Software intercom matrix
Intercom for the whole crew: director, camera operators, sound engineer. It runs in the browser on PCs, tablets and phones, with nothing to install on them. The server sends everyone their own mix, and every setting changes live, without a restart.
Features
One key talks, one key listens, one glance shows who is talking to you. Everything behind it – routing, mixing, the network – is the server’s job.
Talk on a tap or while held, listen, tally, call, Reply and Kill – on big, legible keys, on a phone too.
Roles, groups, keys, fixed routes and presets in a password-protected admin. Every change applies at once.
Program feeds, priority and ducking, input gain, noise gate and an adaptive jitter buffer – all adjustable.
A Stream Deck plugin, an HTTP API with tokens and OSC: press keys, mute, call, load presets, set ON AIR.
One Windows setup, its own HTTPS certificates, LAN or internet, one-click updates.
Every adjustable parameter with its default and range, measured latency, ports and limits – on one page.
Learn moreHow it works
Every client has a single audio connection to the server. Every 20 milliseconds the server mixes what each person is listening to and sends everyone their own mix. The admin page and external controllers only send commands.
One show with the crew
This is how a live show runs on BroadTalk. Every step is one press of a key.
The engineer loads the “News” preset: roles, groups, keys and routes are back exactly where they were last week, in one click.
Setup and monitoringThe PGM feed comes from a computer’s line input. The sound engineer always hears the director on a fixed route and switches the program on with a Listen key.
AudioOne tap on the All key and the director talks to the whole crew. As a priority talker, everything else dips under the voice.
The panelCamera 2 calls the director: a sound, a banner and a flashing key. When it talks, its key shows an amber frame and its name.
The panelThe Reply key always answers whoever last talked to you directly. No hunting for the right key.
The panelAfter the show one Kill releases every talk key left on – from a panel, the admin or a Stream Deck key.
External controlUp close
The panel
Every key shows who it talks to, who is online and what is going on: red is talk, green is listen, amber when someone talks to you. The keys never move – what your hand has learned stays where it is.
The panel
The same panel on phones and tablets. Put it on the home screen; the screen stays on while connected, and an incoming call vibrates where the device can.
Setup and monitoring
The admin’s Live view is a crosspoint matrix: talkers in columns, listeners in rows, green where audio is flowing right now. One click closes an open path.
Specifications
Operators see keys; engineers can set everything: bitrate in both directions, the jitter buffer, the gain range, noise gate, speech threshold, ducking and latch threshold. A preset saves these too.
Measured: 31.6 ms through the server (median, default settings). Mouth to ear on a wired LAN is about 90–120 ms.
All parametersSecurity
Any role can have a PIN. After five wrong tries that device has to wait a minute.
Every installation creates its own certificate authority (BroadTalk CA), installed once on the clients. A company certificate works too.
From outside only roles with a PIN may connect, the admin password needs at least 12 characters, and repeated failed logins lock the address out.
On a short drop the latched keys are kept for 10 seconds, then everything is released. No microphone stays open.
For the crew
Anyone who has seen an intercom panel finds their way in the first minute: keys with names, red is talk, green is listen. For everyone else, one sentence will do: press it and talk.
Installation
One Windows machine is the server, everything else is a browser. No internet needed: BroadTalk is complete on the local network.
No. The panel runs in Chrome or Edge on PCs, tablets and phones. Each device installs the server’s certificate (BroadTalk CA) once, so that the browser allows the microphone; the start page walks you through it.
The measured path through the server is 31.6 ms (median, default settings). Mouth to ear on a wired LAN is about 90–120 ms, depending on the jitter buffer setting and the browsers.
In a load test 32 clients talked to everyone at the same time (992 open paths); all stayed connected with no decoding errors. Above eight connections the server spreads the codec work across CPU cores.
Yes. BroadTalk is complete on the local network and loads nothing from the internet: fonts, icons and the manual are all served by the server.
Yes. With a public name and certificate, colleagues can connect from outside without STUN or TURN servers: forwarding one TCP port and one UDP range is enough. From outside only roles with a PIN may connect.
Windows. A single setup brings the program with its runtime; the program goes to Program Files, its data (settings, presets, logs, certificates) to ProgramData, and updates keep them.
Yes. The bundled Stream Deck plugin mirrors the panel’s keys with live state. Over HTTP (with an API token) and OSC, any device or script can press keys, mute, call, load presets and set ON AIR.
Contact
Questions, a demo, or a trial in your own studio? Write or call, and we’ll show you how BroadTalk fits the way you work.
