env_microphone
From Valve Developer Community
This is a point entity available in all Source games.
Contents |
Entity description
Broadcasts sound from a location for either playback or monitoring.See Also
Keyvalues
-
Targetname:
- Name <string>
- The targetname other entities refer to this entity by.
-
Parentname:
- Parent
<targetname> - Specifies the targetname of this entity's movement parent. Entities with parents move with their parent.
-
EnableDisable:
- Start Disabled
<bool> - Stay dormant until activated (probably with the Enable input).
- target
- <target_destination> If the speaker is in Measuring mode, this is the name of the entity where the sound level is to be measured.
- SpeakerName
- <target_destination> The name of a speaker entity through which to play any sounds heard by this microphone. If specified, the microphone will consider itself in Speaker mode. Cannot be an env_speaker!
- ListenFilter
- <filterclass> The name of an filter entity which specifies the only entities the microphone can hear. Sounds emitted by other entities will not be heard.
- speaker_dsp_preset
- <choices> Only useful in Speaker mode. If specified, when the microphone is enabled, it'll set the global dsp_speaker preset to this value. Sounds played back through speakers will then be affected by the selected DSP.
Literal Value Description 0 Use Default 50 1 NO EFFECT 51 2 (DUPLICATE OF 1) 52 3 (DUPLICATE OF 1) 53 4 (DUPLICATE OF 1) 54 5 (DUPLICATE OF 1) 55 6 SPEAKER, LOUDER 56 7 SPEAKER VERY SMALL 57 8 LOUDSPEAKER, ECHO 58 9 SPEAKER SMALL 59 10 SPEAKER TINY
- Sensitivity
- <float> (0-10) If the speaker is being used to monitor sound levels, this keyvalue dictates its sensitivity.
Literal Value Description 0 Deaf 1 Normal 2-10 Increasing Sensitivity
- MaxRange
- <float> (0-â) Sounds beyond this range won't be heard, irrelevant of attenuation.
- </dd>
Warning:setting this to zero (or a value > 1024) when the microphone is in Speaker mode can be very bad for performance!!
Inputs
-
Targetname:
-
Kill - Removes this entity from the world.
-
KillHierarchy - Removes this entity and all its children from the world.
-
AddOutput <string> - Evaluates a keyvalue/output on this entity. It can be potentially very dangerous, use with care.
- Format:
<key> <value> - Format:
<output name> <targetname>:<inputname>:<parameter>:<delay>:<max times to fire, -1 means infinite> -
FireUser1toFireUser4 - Fire the
OnUseroutputs; see User Inputs and Outputs.
-
Parentname:
-
SetParent <targetname> - Move with this entity. See Entity Hierarchy (parenting).
-
SetParentAttachment <string> - Attach to a named attachment on the current parent. The entity will teleport so that the position of its root bone matches that of the attachment.
-
SetParentAttachmentMaintainOffset <string> - As above, but without teleporting. The entity retains its position relative to the attachment at the time of the input being received.
-
ClearParent - Removes this entity from its current movement hierarchy.
-
EnableDisable:
-
Enable -
Disable - Enable/disable this entity from performing its task. It might also disappear from view.
- SetSpeakerName <target_destination>
- Set the microphone to output through a different speaker entity.
Outputs
-
Targetname:
-
OnUser1toOnUser4 - Fired in response to the
FireUserinputs; see User Inputs and Outputs. -
OnKilled(New with Left 4 Dead) - Fired when the entity is killed and removed from the game.
- SoundLevel <float>
- Fired in Measuring mode whenever the sound level changes.
- OnRoutedSound
- Fired whenever a sound is routed out through the specified speaker (if any).
- OnHeardSound
- Fired whenever this microphone hears any sound it cares about.

