Translate@Home - Interpreter Requirements

Interpreters should meet these requirements with regard to their internet connection and equipment (computer, headset, browser). In addition, they should follow our best practices when using Translate@Home.


We recommend a recent computer, preferably high-end or at least mid-range with a fast processor and sufficient memory (eg. Intel i7 with 16GB RAM) and a dedicated sound card and graphic card. Insufficient CPU or memory may result in audio distortions and packet loss. Sometimes, this will be heard immediately. On other computers, it may cause the audio quality to gradually deteriorate.


The operating system doesn’t matter. It should only be able to run a recent version of Mozilla Firefox (make sure to install the latest update). We strongly recommend using Firefox !

Even though Google Chrome fully supports WebRTC and should also work, we recommend using Firefox for various reasons:

  • Using Chrome may result in poor audio quality and may cause audio quality to deteriorate over time (especially on budget computers).
  • We use Firefox ourselves for testing, not Chrome.
  • Firefox lets interpreters select their microphone when connecting to a language room. Chrome doesn’t, which may result in an interpreter being connected with the wrong microphone.
  • Google Chrome is more commonly used for everyday browsing. There is a higher chance of add-ons being installed that could affect performance.

Only if for some reason a translator can’t use Firefox, you should consider using Google Chrome.


We strongly recommend using a professional or high-end headset with noise cancelling. Cheap headsets are often the cause of audio distortions. A second headset should be available in case there are any issues.


The room from which remote interpretation is done should be as quiet as possible and acoustically suitable. When you talk or clap there shouldn’t be an echo or a reverberation. Ideally, you should find a small room with a low ceiling, a thick carpet on the floor, no windows and sound absorbing panels (you can get the same effect by covering the walls with thick curtains, blankets or carpets).

Wired Ethernet Connection

Very important: interpreters should have a wired ethernet connection! A good quality cable (Cat 6 recommended) and connector are also important.

WiFi (and other forms of wireless data transfer) are very strongly discouraged and can lead to very poor audio quality, regardless of the distance to the access point. It is impossible to fix the audio distortion caused by WiFi usage.

Fast and stable internet connection to Clevercast

Interpreters need a fast and stable internet connection to the Clevercast streaming servers located in the Netherlands.

To test this, you should receive a link to the Translate@Home Connection Test page from your project manager. This way, you can test the quality of your connection in advance.

After receiving the link, make sure that you have a wired internet connection, open Firefox (close all unnecessary other applications) and paste the test link in the browser’s address bar. The test page will ask you to enter your name, email and location and press the Start button. The browser will establish a connection with Clevercast and start sending data packets for about 30 seconds.

The ‘T@H Connection Test’ page

After 30 seconds, the test ends and you will see a popup with the result. The details of your test will also be made available to your project manager.

Internet Connection

Interpreters should have a bandwidth of at least 5 Mbps up and 5 Mbps down.

You can test this by going to and click on the Change Server link. Next, type ‘I3D’ in the popup dialog and select ‘Rotterdam –’. Finally, press the GO button and wait until all tests are completed.

1. Click on the Change Server link

2. Type ‘I3D’ in the popup dialog and select ‘Rotterdam –’

3. Press the GO button and wait until all tests are completed

  • The PING value contains the time for packets to travel to our server.
  • The Download Mbps value should be higher than 5 Mbps, otherwise you may experience difficulties in watching the original video+audio stream.
  • The Upload Mbps value should be more than 5 Mbps, otherwise some of your audio packets may be dropped.

More info about T@H