GSM 06.10 is a lossy speech codec used in GSM mobile phone networks for compressing voice calls into low bitrates.
MKA files are built around lossy compression. Designed for multitrack audio, audio streaming, chapter support, they use the audio/x-matroska MIME type and typically range from varies by content.
Reach for GSM when your priority is mobile voice, legacy phone recordings, voicemail — its efficient compression makes sharing fast and storage minimal.
Reach for MKA when your priority is multitrack audio, audio streaming, chapter support — its efficient compression makes sharing fast and storage minimal.
Learn more about GSM and MKA formats in our detailed guide.
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GSM (GSM audio) - GSM 06.10, lossy speech codec used in mobile telephony. Best for mobile voice, legacy phone recordings, voicemail.
MKA (MKA) - Matroska Audio, flexible container for audio streams. Ideal for multitrack audio, audio streaming, chapter support.
Yes, GoConvertFile offers free conversion of GSM to MKA for files up to 100MB. No registration required.
Most GSM to MKA conversions complete within seconds for standard-sized files. Larger files may take longer depending on the conversion complexity.
MKA is ideal for multitrack audio, audio streaming, chapter support. Matroska Audio, flexible container for audio streams
File size after GSM to MKA conversion depends on the content complexity and quality settings. Both formats use similar compression approaches so sizes are comparable.