Convert AAC to AC3 online for free
1: Choose multiple local AAC files or enter the URL of an online AAC file. 2: Choose "AC3" as target format and set options. 3: Click the "START CONVERSION" button to convert AAC files to AC3 online.
Set conversion options (optional)
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File extension: .aac
Advanced Audio Coding (AAC) is an audio coding standard for lossy digital audio compression. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates. AAC has been standardized by ISO and IEC, as part of the MPEG-2 and MPEG-4 specifications.
File extension: .ac3
Dolby Digital, originally synonymous with Dolby AC-3, is the name for what has now become a family of audio compression technologies developed by Dolby Laboratories. Formerly named Dolby Stereo Digital until 1995, the audio compression is lossy (except for Dolby TrueHD), based on the modified discrete cosine transform (MDCT) algorithm.