Files with asi file extension can also be found as audio files in computer games based on Miles Sound System.
.ASI file extension - Miles Sound System data
What is asi file? How to open asi files?
File type specification:
The asi file extension is also related to Miles Sound System and used for one of its default file types.
The Miles Sound System is one of the most popular pieces of middleware ever released. It has been licensed for over 4,500 games on 14 different platforms!
John Miles first released MSS in 1991 in the early days of PC gaming. Today, Miles features a no-compromise API that integrates 2D and 3D digital audio with features like streaming, environmental reverb, multistage DSP filtering, and multichannel mixing, and highly-optimized audio decoders.
Miles is the most sophisticated, most robust, and most fully featured sound system available for your games.
Commonly used in computer games for audio files.
The default software associated to open asi file:
Company or developer:
Electronic Arts, Inc.
SimCity Societies is a city-building simulation computer game developed by Tilted Mill Entertainment and published by Electronic Arts (EA) in 2007. It is part f the Sim games series, yet the gameplay is significantly different from previous SimCity titles, because the focus is aimed on "social engineering".
Call of Duty 4: Modern Warfare 
Company or developer:
Activision
Call of Duty 4: Modern Warfare is first person shooter computer game. Player is taken to the Russia, where fights against Russian ultranationalists in fiction Russian civil war. Modern Warfare contains single as well as multiplayer game mod.
List of recommended software applications associated to the .asi file extension
Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open asi file, edit asi file, convert asi file, view asi file, play asi file etc. (if exist software for corresponding action in File-Extensions.org's database).
Unspecified and all other actions for computer programs working with asi file - Miles Sound System data
Click on the software link for more information about SimCity Societies. SimCity Societies uses asi file type for its internal purposes and/or also by different way than common edit or open file actions (eg. to install/execute/support an application itself, to store application or user data, configure program etc.).
Microsoft Windows:
Main software associated with asi file by default:
SimCity Societies
Call of Duty 4: Modern Warfare
