- Extension
- .gsm
- .spx
- Format
- Binary
- Binary
- Category
- Audio
- Audio
- Developer
- European Telecommunications Standards Institute (ETSI)
- Xiph.Org
- Description
- 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.
- Audio file compressed using Speex compression and saved in the Ogg Vorbis container format; designed as an audio compression format specifically for speech; compresses voice at 2 to 44 kbps and supports 8 kHz, 16 kHz, and 32 kHz compression in the same bitstream.
- MIME Type
- audio/x-gsm
- audio/ogg
