Online SD2 to GSM, you can put the SD2 to GSM format on your computer, tablet or mobile phone without downloading any software!
Step 1
Upload SD2 file
Select files from your computer, Google Drive, Dropbox, URL or by dragging them on the page.
Step 2
Select 'GSM'
Select output GSM or any other format as the conversion result (click the Convert button)
Step 3
Download your SD2 file
After the conversion you can download your GSM file and upload it to Google Drive, Dropbox.
sd2 : Sound Designer 2 format
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.
GSM 06.10 Lossy Speech Compression. A lossy format for compressing speech which is used in the Global Standard for Mobile telecommunications (GSM). It’s good for its purpose, shrinking audio data size, but it will introduce lots of noise when a given audio signal is encoded and decoded multiple times. This format is used by some voice mail applications. It is rather CPU intensive.