GSM to SD2 Converter
Convert your gsm files to sd2 online & free
GSM 06.10 Lossy Speech Compression
Sound Designer 2 format
How to convert GSM to SD2
Select files from Computer, Google Drive, Dropbox, URL or by dragging it on the page.
Choose "to sd2"
Choose sd2 or any other format you need as a result (more than 200 formats supported)
Download your sd2
Let the file convert and you can download your sd2 file right afterwards