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File Converters Forensic TIFF and PDF apps Freeware2
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| File extension | .AC3 |
| Category | Audio File |
| Description | AC3 is a file format with multi-channel Dolby Digital sound. Each file with .ac3 extension may contain up to 6 audio data blocks, and each block consists of 256 audio fragments for each channel. AC3 tracks may feature output for subfoofer in order to create dimensional 5.1 sounding. AC3 tracks are supported by multiple freeware players, but the quality of sounding highly depends on the acoustic system. If the software doesn't support AC3, AC3 Filter codec needs to be installed. |
| Associated programs | QuickTime Player VLC Media Player Windows Media Player |
| Developed by | Dolby Digital |
| MIME type | |
| Useful links |
| File extension | .MP3 |
| Category | Audio File |
| Description | MP3 is the most popular audio file type based on MPEG-1 Layer III compression. Its lossy algorithm was developed in 1991. MP3 codes the sound almost with the same quality, as CD (16-bit stereo), providing compression in size 1 to 10 from the original WAF or AIFF tracks. The quality of MP3 seriously depends on the bitrate. It can be 128 - 256 kbps. Higher bitrates are also supported, but they seriously increase the file size. It is supported by all modern hard- and software players. |
| Associated programs | RealOne WinAmp Windows Media Player iTunes |
| Developed by | Fraunhofer Institute |
| MIME type | audio/mpeg audio/MPA audio/mpa-robust |
| Useful links | More detailed information on MP3 files |
