DSP

Category:Sound System
In the context of and games, DSP, or Digital Signal Processor, refers to the audio effects such as echoes, reverberation. and such that can be applied to currently-playing sounds. DSP effects are automatically handled depending on the materials around the player and can be overridden with in , or in .
This list contains DSP presets available in all GoldSrc and Source engine games.
==DSP Room Type (Soundscapes)==
Ideal for soundscapes. Adds reverb and echo to audio. This gives the effect of sound bouncing inside a room or sound echoing back to you outside.
You can use the command "dsp_room (number)" (Source only) or "room_type (number)" to test the following effect:
Number	Name 	Description
0 	Normal (off) 	Disables DSP
1 	Generic 	Default.In , automatically calculates DSP based upon brush geometry.
2 	Metal Small 	
3 	Metal Medium 	
4 	Metal Large 	
5 	Tunnel Small 	
6 	Tunnel Medium 	
7 	Tunnel Large 	
8 	Chamber Small 	
9 	Chamber Medium 	
10 	Chamber Large 	
11 	Bright Small 	
12 	Bright Medium 	
13 	Bright Large 	
14 	Water 1 	
15 	Water 2 	
16 	Water 3 	
17 	Concrete Small 	
18 	Concrete Medium	
19 	Concrete Large 	
20 	Big 1 	
21 	Big 2 	
22 	Big 3 	
23 	Cavern Small 	
24 	Cavern Medium 	
25 	Cavern Large 	
26 	Weirdo 1 	
27 	Weirdo 2 	
28 	Weirdo 3 	
29 	Weirdo 4 	
==DSP System Presets==
Effects used for specific scripts. 
Number	Name 	Description
30 	Lowpass 	facing away
31 	Lowpass 	facing away + 80ms delay
32 	Explosion ring 1 	
33 	Explosion ring 2 	
34 	Explosion ring 3 	
35 	Shock muffle 1 	
36 	Shock muffle 2 	
37 	Shock muffle 3 	
38 	Distorted speaker 0 	
39 	Strider pre-fire 	
40 	player spatial (wall) delay	
41 	spatial delay 	reserved for spatial delays
42 	spatial delay 	reserved for spatial delays
43 	spatial delay 	reserved for spatial delays
==DSP Test==
Used for testing audio effects.
Number	Name 	Description
44 	Test 1	pitch up 10%
45 	Test 2	pitch down 10%
46 	Test 3	
47 	Test 4	
48 	Test 5	
49 	Test 6	No effect
==DSP Speaker Type ()==
Used with env_microphone. It distorts audio to make it sound like it's coming from a speaker (from radio, TV, etc.).
Number 	Name 	Description
50 - 54	Nothing 	No effect
55 	Loud speaker 	
56 	Very small speaker	
57 	Echoing speaker 	
58 	Small speaker 	
59 	Tiny speaker 	
==DSP Automatic==
Min and max templates for automatic DSP creation. Not ideal for anything else.
number	name 	description
60-99 	 	memory slots reserved for auto dsp create
100 	 	
101 	 	
102 	room empty small bright 	min parameters
103 	room empty huge dull 	max parameters
104 	room diffuse small bright 	min parameters
105 	room diffuse huge dull 	max parameters
106 	duct empty small bright 	min parameters
107 	duct empty huge dull 	max parameters
108 	duct diffuse small bright 	min parameters
109 	duct diffuse huge dull 	max parameters
110 	hall empty small bright 	min parameters
111 	hall empty huge dull 	max parameters
112 	hall diffuse small bright 	min parameters
113 	hall diffuse huge dull 	max parameters
114 	tunnel empty small bright 	min parameters
115 	tunnel empty huge dull 	max parameters
116 	tunnel diffuse small bright 	min parameters
117 	tunnel diffuse huge dull 	max parameters
118 	street empty small bright 	min parameters
119 	street empty huge dull 	max parameters
120 	street diffuse small bright 	min parameters
121 	street diffuse huge dull 	max parameters
122 	alley empty small bright 	min parameters
123 	alley empty huge dull 	max parameters
124 	alley diffuse small bright 	min parameters
125 	alley diffuse huge dull 	max parameters
126 	courtyard empty small bright 	min parameters
127 	courtyard empty huge dull 	max parameters
128 	courtyard diffuse small bright	min parameters
129 	courtyard diffuse huge dull 	max parameters
130 	openspace empty small bright 	min parameters
131 	openspace empty huge dull 	max parameters
132 	openspace diffuse small bright	min parameters
133 	openspace diffuse huge dull 	max parameters