Creating Portal Speakers

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Introduction

This tutorial will teach you how to create speakers.

First, complete this guide Making GLaDOS speak

Warning: This guide is incomplete, do not follow.

The Speaker

Create a prop_static entity and set it's world model to models/props/speaker_system01/speaker_system01.mdl

If the speaker is inside an Observation Hallway set it's skin to 0. If the speaker is the the maintenance areas, make it skin 1.

Create an info_target entity and name it to glados_speaker1. Put this info_target in the center of the speaker part of the model.

Create an env_microphone entity inside of the nodraw box of the GLaDOS' generic_actor area. Enter the following properties:

Property Name	Value
Name	glados_microphone_speaker01
Start Disabled	Yes
Speaker target	glados_speaker1
Speaker DSP Preset	8 LOUDSPEAKER, ECHO

Underflags, untick

• Hears Combat sounds
• Hears World sounds
• Hears player sounds
• Hears bullet impacts

then tick Ignores non-attenuated sounds

Bug: Although you are outside of the microphone area. It is still possible to hear yourself and the portalgun from the speaker.  [todo tested in ?]

See Also

• Making GLaDOS speak
• Creating a Portal AI Voice
• Portal Behind The Scenes Level Creation
• Portal Level Creation

Extra

The voice lines used in the BTS areas in Portal were modified to have a "speaker" effect. This is what we got in the Retail:

Retail Voice Line

This is what we saw in the Beta:

Beta Voice Line

It is not known what filter they used, they probably used High Pass. If anyone knows what they precisely did to make this speaker voice, please add it here.