Creating Portal Speakers

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Introduction

This tutorial will teach you how to create speakers.

First, complete this guide Making GLaDOS speak

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

See Also

• Making GLaDOS speak

• Creating an Observation Hallway

• 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.