Online AAC to SD2, you can put the AAC to SD2 format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload AAC file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'SD2'
Select output SD2 or any other format as the conversion result (click the Convert button)
Step 3
Download your AAC file
After the conversion you can download your SD2 file and upload it to Google Drive, Dropbox.
aac : Advanced Audio Coding
AAC is an audio file format that works similar to MP3 but compresses more than MP3. It significantly reduces the audio file size without losing the quality. To reduce the file size it uses the MPEG-4 standard to cut off the low frequency sounds that cannot be heard in a human’s ear.
SDII (Sound Designer II, sometimes seen abbreviated as SD2) is a monophonic/stereophonic audio file format, originally developed by Digidesign for their Macintosh -based recording/editing products. It is the successor to the original monophonic Sound Designer I audio file format.