GSM File Documentation

Overview

Feature Value
Full Name Global System for Mobile Audio File
File Extension .gsm
MIME Type audio/x-gsm
Format Type Audio
Compression Lossy
Sample Rate 8000 Hz
Channels Monophonic
Bitrate 13 kbps
Frame Size 33 bytes
Frame Rate 50 frames per second
Encoding Method RPE-LTP (Regular Pulse Excitation Long-Term Prediction)
Usage Mobile communications, Voice storage
Playback Compatibility Most mobile devices and multimedia playback software
Advantages Compact file size, optimized for voice
Disadvantages Not suitable for high-quality music, Limited support on some newer devices
Developed by European Telecommunications Standards Institute (ETSI)
Standardization ETSI EN 300 960
File Analysis Tools Compatibility Commonly supported by various audio analysis software
Editing Software Various audio editing tools with GSM support
Encoding Software Various GSM encoders available