GSM vs TTA
Ein detaillierter Vergleich von GSM Audio und True Audio Lossless — Dateigröße, Qualität, Kompatibilität und welches je nach Workflow zu wählen ist.
GSM Audio
Audio FilesGSM 06.10 is a speech compression standard designed for the Global System for Mobile Communications. It encodes speech at 13 kbps using Regular Pulse Excitation with Long Term Prediction, optimized for voice intelligibility over cellular networks.
Über GSM-DateienTrue Audio Lossless
Audio FilesTTA (True Audio) is an open-source lossless audio codec that provides real-time lossless compression with hardware-friendly decoding. It achieves compression ratios similar to FLAC while maintaining very low CPU requirements during playback.
Über TTA-DateienVorteilsvergleich
GSM Vorteile
- Tiny bitrate (13 kbps) — hours of speech in a few MB.
- Speech-optimized — clear voice reproduction.
- Universal cellphone decoder adoption 1991-2015.
- Stable since 1987.
TTA Vorteile
- Lossless bit-exact reproduction.
- Fast, low-memory decoding.
- Open-source reference.
- Cue-sheet support.
Einschränkungen
GSM Einschränkungen
- Speech-only — music sounds distorted.
- 8 kHz sampling — narrowband, muffled by modern standards.
- Legacy — LTE VoLTE moved to AMR-WB, Opus, or EVS.
- Tooling outside telecom is sparse.
TTA Einschränkungen
- Compression ratio worse than FLAC.
- Niche tooling.
- Hardware support died with 2000s DAP era.
- Eclipsed by FLAC.
Technische Spezifikationen
| Spezifikation | GSM | TTA |
|---|---|---|
| MIME type | audio/gsm | audio/x-tta |
| Extension | .gsm | .tta |
| Codec | GSM 06.10 (RPE-LTP) | — |
| Sample rate | 8 kHz | — |
| Bitrate | 13 kbps | — |
| Algorithm | — | Fixed prediction + adaptive Rice coding |
| License | — | LGPL |
Typische Dateigrößen
GSM
- 1 min of voice ~100 KB
- 1 hour voicemail archive ~6 MB
TTA
- 3-min song (CD) 20-25 MB
- Full CD album 250-350 MB
Bereit zum Umwandeln?
Wandle zwischen GSM und TTA online um, kostenlos und ohne Installation. Verschlüsselter Upload, automatische Löschung in 60 Minuten.
Häufig gestellte Fragen
GSM (GSM Audio) is an audio file format used to store sound recordings — music, voice, podcasts, sound effects. The format defines how the audio samples are compressed (or stored raw), what bitrates are supported, and how metadata such as title, artist, album, and cover art is embedded. It is part of the audio files family.
GSM (GSM Audio) is an audio formatoo de arquivo used to store sound recordings — music, voice, podcasts, sound effects. The formato defines how the audio samples are comprimido (or stored raw), what bitrates are suportado, e how metadata como title, artist, album, e cover art is embedded. It is part of the audio arquivos family.
VLC, foobar2000, and the default media players on Windows and macOS handle GSM natively. On mobile, iOS Music and Android media apps vary in their support — popular formats work everywhere; niche ones may need a dedicated app. If playback fails on a device, converting to MP3 or AAC usually solves it.
VLC, foobar2000, e the default media players no Windows e macOS handle GSM natively. On mobile, iOS Music e Android media apps vary in their support — popular formatoos funcionar everywhere; niche ones may need a dedicated app. If playback fails em um device, convertendo to MP3 ou AAC Geralmente solves it.
Upload the GSM to KaijuConverter and pick MP3, WAV, FLAC, AAC, OGG, or any other target. Our FFmpeg pipeline decodes the audio and re-encodes to the target format at sensible default bitrates (VBR ~190 kbps for music, 96 kbps for speech). Metadata and cover art travel with the audio where both formats support them.
GSM can be lossy or lossless depending on the specific variant. Lossy variants (smaller files) discard some audio detail during compression in ways tuned to be inaudible; lossless variants preserve every sample exactly but produce larger files. For distribution, lossy at high bitrate is standard; for archival, lossless wins.