- Extension
- .sd2f
- .gsm
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- Avid Technology
- European Telecommunications Standards Institute (ETSI)
- Description
- The Sound Designer II audio file stored with the .sd2f extension, which comes from the format's classic Mac OSType "Sd2f" and appears instead of .sd2 on files that have passed through Mac software. The format is the same Digidesign/Pro Tools big-endian PCM audio as .sd2.
- A lossy file format used to compress speech in Global Standard for Mobile (GSM) telecommunications. It is very effective for reducing audio file size. However, encoding and decoding audio signals severally is discouraged as the final product will have a lot of noise. Popular with some voice mail software but it is CPU intensive.
- MIME Type
- audio/x-sd2
- audio/x-gsm
