Open AC3 file

The most commonly used .ac3 file type: Dolby Digital sound

What is ac3 file? Understanding and opening ac3 files

ac3 file icon Are you facing difficulties opening ac3 files on your computer, or wondering exactly what ac3 file is?
We've got the best software solutions for opening ac3 files effortlessly.

.ac3 file type #1: Dolby Digital sound

An ac3 file extension is associated with the Dolby Digital sound file format also known as AC3 (Audio Coding 3).

Further details

The ac3 file extension is used for for Dolby Digital sound files.

Launched in 1987, the Dolby Digital format is a digital audio encoding standard developed by Dolby Labs.

Unlike Dolby ProLogic systems, Dolby Digital audio tracks are independent (the term "discrete" is also sometimes used). For consumer electronics, the Dolby Digital format relies on a compression algorithm called AC3 (Audio Coding 3), which can compress audio streams by a factor of 10 to 12 with a 16-bit sampling rate of 48 kHz, for an overall bitrate of 384 kbps. For this reason, the Dolby Digital format is sometimes called Dolby AC3. For professionals, instead of an AC3 decoder, Dolby Digital uses a system called SR-D.

Dolby Digital is likely the most commonly used system in home theater systems. To be able to use media recorded in Dolby Digital format (DVD video or DVD audio, for example), you need a device with an integrated AC3 decoder.

Open ac3 file with:

Media Player icon

Media Player

Windows 11 default media player.

VLC media player icon

VLC media player

One of the most popular multi-platfom multimeda player

.ac3 file type #2: SPICE AC/frequence domain output file

Files ac1 extension are used by SPICE. They contain domain output data.

Further details

The ac3 file extension is associated with SPICE (Simulation Program with Integrated Circuit Emphasis) program, developed by National Instruments Corporation. The ac3 extension files are used for AC/frequence domain output.

Open ac3 file with:


A computer simulation and modeling software

What file extension actually is?

Simply put, file extensions are the characters after the dot in the computer file name, so for example document-name.pdf has file extension „pdf“. This helps Windows to identify which program should be used to open the file.

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