GSM vs SOX
Una comparativa detallada de GSM Audio y SoX Audio — tamaño de archivo, calidad, compatibilidad y cuál elegir según tu flujo de trabajo.
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.
Sobre los archivos GSMSoX Audio
Audio FilesSoX (Sound eXchange) native format is used by the SoX command-line audio processing tool as an intermediate representation. It preserves full sample precision and metadata during complex audio processing chains involving multiple transformations.
Sobre los archivos SOXComparativa de ventajas
GSM Ventajas
- 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.
SOX Ventajas
- Preserves full PCM precision between SoX steps.
- Proprietary but documented format.
- Useful as pipeline intermediate in audio scripts.
Limitaciones
GSM Limitaciones
- 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.
SOX Limitaciones
- Niche format — almost no tool outside SoX reads .sox.
- Superseded in most workflows by WAV or FLAC for intermediates.
- Rare in production deployments.
Especificaciones técnicas
| Especificación | GSM | SOX |
|---|---|---|
| MIME type | audio/gsm | audio/x-sox |
| Extension | .gsm | .sox |
| Codec | GSM 06.10 (RPE-LTP) | Raw PCM (SoX's native intermediate) |
| Sample rate | 8 kHz | — |
| Bitrate | 13 kbps | — |
| Associated tool | — | SoX (Sound eXchange) |
| Formats SoX handles | — | 30+ (WAV, AIFF, FLAC, MP3, OGG, etc.) |
Tamaños típicos de archivo
GSM
- 1 min of voice ~100 KB
- 1 hour voicemail archive ~6 MB
SOX
- 3-min PCM 16-bit stereo intermediate ~30 MB
- 1-hour 24-bit intermediate ~1 GB
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Preguntas frecuentes
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.