To make use of voice chat you will need to first ensure that your microphone is connected to your computer and is set up correctly. Please see the section titled “No one can hear me in a match!” if it does not seem like anyone can hear you whilst you are on the Hero Select screen or in a match.
Once your microphone is set up you will need to set your voice chat options. To do this open the settings menu and click on the “Audio” tab. You will then find two options “Steam Voice” and “Voice Recording”.
“Steam Voice” must be set to “On” for other players to hear you, and for you to hear other players.
The options in the “Voice Recording” drop-down will control when your voice will be transmitted to other players. Setting this to “On” will always send any sounds received by your microphone, the “Push To Talk” setting will only send your voice when you are holding the key bound to voice chat, and the “Off” option will never transmit any sounds from your microphone.
If you are using the “Push To Talk” option you will also need to bind a key to use. To do this you will need to switch to the “Controls” section of the settings menu and then bind the key you wish to use to the “Steam Voice in push to talk” option.